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ICs for Optical Disk Drive
AN8725FH
Semiconductor laser power control IC
s Overview
The AN8725FH is a laser driver IC that can set a laser emitting level to a maximum precision in recording and playback of an optical recording equipment such as PD, and can modulate a laser light in tune with the external signal.
14.000.20 12.000.20 60 61 41 40 (1.25) 12.000.20 14.000.20 21 0.900.10 1.950.20 1 (1.25) 0.50 20 0.18 +0.10 -0.05
Unit: mm
s Features
* Digital setting of playback current, peak current, bias current and abnormal light emitting level * Peak current and bias current can be modulated by the external signal. * Driving current set-up (digital set-up) For playback: 8-bit + 4-bit (0 mA to 80 mA) 5-bit + 4-bit (0 mA to 150 mA) For peak: 4-bit + 8-bit (0 mA to 150 mA) For bias: 4-bit + 8-bit (0 mA to 150 mA) * Laser output light monitoring circuit built-in * Abnormal light emitting detecting function built-in: Possible to set up excessive and insufficient light emitting levels with 4-bit DAC for playback and recording, respectively. * Supply voltage abnormality detection: Voltage down (3.9 V or less), voltage up (6.1 V or more)
80
(1.00)
0.15 -0.05
+0.10
Seating plane
0.900.10 0.100.10
0 to 10 0.500.20
QFP080-P-1212
s Applications
* Optical disk drive
1
AN8725FH
s Block Diagram
PKGND
ICs for Optical Disk Drive
PKDCP
BIGND
RDCP2 64
DAC8
PKVCC
45
58
72
71
77
76
62
68
78
73
IGND 40 4 35 AGND 5 54 4 5 6 8 9 4 AD0 AD1 AD2 AD3 DT0 16 DT1 17 DT2 18 DT3 22 DT4 23 DT5 24 DT6 25 DT7 26 XLDEN 27 XCLR 29 XLDERR 32 XHFON PWMSK 30 ERFIL 31 55 4 Excessive light emission DAC6 4
PS over PS down
Playback current DAC7 LPF9
LPF off
DAC3
DAC2
SW1 44 43 65 39 LPF92 LPF91 LDRP LPF12 LPF11
Playback current DAC9 4 Playback current DAC1 8
PKMD BIMD RPHOLD XWR XRD
Playback current DAC8 LPF1
LPF off
SW1
8
63
DAC7
RDCP1 38 70 XLDPK 69 LDPK 75 XLDBI 74 LDBI
Buffer
AVCC
Peak current DAC2
BIDCP SW2 SW3
RGND
BIVCC
RVCC
Current amplification
11 12 13 14 15 Control logic 8
Peak bias current DAC4 Bias current DAC3 Shunt circuit SW5 Current amplification
X1/SX2 changeover AAF off AAF RST CTL SW6 DAC1 DAC9 DAC4
I/V conversion
Current amplification X1, X10
Current source for DAC Supply voltage monitoring
AAF
SW6
WPW over WPW down RPW over RPW down Sleep
Sleep circuit Abnormal light emitting detection Reference voltage source (1.25 V) 1 20 21 41 42 59 60 61 79 80
Insufficient light emission DAC5
51 IPD 50 IVIN 49 IVOUT 48 AAF 47 PWRMONI 46 DETMONI 56 VNR 36 VC 53 CVCC 52 CGND 34 DVCC 9 33 28 19 10 3 2
DGND
DAC56SW 57 DACMONI 37 RREF
ERREF
2
SGND
ICs for Optical Disk Drive
s Pin Descriptions
Note) Description on notations of "Category" in the following list: IN : Input pin I/O : Input/output pin (pull-down with 100 k ) IND : Input pin (pull-down with 100 k) PS : Power supply/GND pin INU : Input pin (pull-up with 100 k) MSC : Parts connecting pin, etc. OUT: Output pin A: Analog function D: Digital function
AN8725FH
Pin No. 1
Symbol SGND
Category PS D
Description Pin connected to the chip substrate. Must be used in the same potential as other GND pins.
2 3 4
DGND DGND PKMD
PS PS IND
D D D
GND pin exclusive for a logic circuit. Must be used in the same potential as other GND pins. Peak current modulation signal input pin. In high-level, the current set up with DAC2 is superimposed on LD.
5
BIMD
IND
D
Bias current modulation signal input pin. In high-level, the current set up with DAC3 is superimposed on LD.
6
RPHOLD
IND
D
Record gate signal input pin. Inputs a low-level in playback and a high-level in recording. Switches an amp. of light monitoring signal, abnormally emitted light detection level and on/off of HF module.
7
XWR
INU
D
Register writing signal pin. Selects a register specified by address in a fall edge and writes a bus data on the register of the address specified in the rise edge.
8
XRD
INU
D
Register read-out signal pin. Register data of the address specified in low appears on the bus.
9
DVCC
PS
D
Power supply pin exclusive for a logic circuit. Must be used in the same potential as other power supply pins.
10
DGND
PS
D
GND pin exclusive for a logic circuit. Must be used in the same potential as other GND pins.
11 12 13 14 15 16 17 18 19
AD0 AD1 AD2 AD3 DT0 DT1 DT2 DT3 DGND
IND IND IND IND I/O I/O I/O I/O PS
D D D D D D D D D
4-bit address pin for registers. Selects the register to be accessed.
Data I/O 8-bit bus pin. The bus to set the data to be written on a register and to read out the data of a register.
GND pin exclusive for a logic circuit. Must be used in the same potential as other GND pins.
3
AN8725FH
s Pin Descriptions (continued)
Pin No. 20 21 22 23 24 25 26 Symbol SGND SGND DT 4 DT 5 DT 6 DT 7 XLDEN Category PS PS I/O I/O I/O I/O INU D D D D D D D LD enable input pin.
ICs for Optical Disk Drive
Description Pin connected to the chip substrate. Must be used in the same potential as other GND pins. Data I/O 8-bit bus pin. The bus to set the data to be written on a register and to read out the data of a register.
In a high-level or open mode, LD becomes off and open. This state is suited to check the LD characteristics in keeping a connection to the IC. At the time power off, both ends of LD are short-circuited by the IC for protection. In the low-level, it returns to a normal operation. 27 XCLR IND D Clear signal input pin. Sets an LDDENB register to "0" in the low-level and presets the status of each DAC and each switch to an initial state as defined separately. But six registers for an abnormal detection are not cleared. In this state, each output of a current amplification 1, 2, 3 are in the off state and a shunt circuit becomes on to continue to protect LD. Setting this pin to the high-level and the LDDENB register to "1", it returns to a normal operation. 28 DGND PS D GND pin exclusive for a logic circuit. Must be used in the same potential as other GND pins. 29 XLDERR OUT D Laser abnormality detection output pin. When a supply voltage or a laser light emission exceeds a fixed range, it goes to low-level. A supply voltage abnormality is detected for the voltage drop (3.9 V or less) or voltage rise (6.1 V or more). And an abnormal light emission is detected for an excessive or weaker light emission set up by 4-bit DAC5 and DAC6. This abnormality detection is latched so as to prevent it from being reset until ERRCLR register is set to "1". Further, each DAC output of a playback current, a peak current and a bias current can be set to off, a shunt circuit be set to on and LD between anode and GND be short-circuited by 100 so that LD can be protected. This protection function is latched to keep it from being reset until ERRCLR is set to "1". Selection of either operation or non-operation for this operation can be made by an STPMSK register. 30 PWMSK MSC D The pin to set up the mask time for a transitional response output that comes out at switching a detection level of excessive or insufficient light emission by RPHOLD. Set a mask time by an external capacitor between PWMSK and DGND and the resistor (10 k) inside the IC. This pin is for a schmitt-trigger input.
4
ICs for Optical Disk Drive
s Pin Descriptions (continued)
Pin No. 31 Symbol ERFIL Category MSC D by noise. Description
AN8725FH
Filter setting pin to avoid a detection error of laser abnormality caused Connect an external capacitor between ERFIL and DGND, and set a filter together with a resistor (10 k) inside the IC. This pin is for schmitt-trigger input.
32
XHFON
OUT
D
HF module on/off control signal output pin. High corresponds to off and low to on.
33
DGND
PS
D
GND pin exclusive to a logic circuit. Must be used in the same potential as other GND pins.
34
DVCC
PS
D
Power supply pin exclusive to a logic circuit. Must be used in the same potential as other power supply pins.
35
AGND
PS
A
GND pin exclusive to a analog circuit. Must be used in the same potential as other GND pins.
36
VC
MSC
A
Output pin for reference voltage (1.25 V). Connects a capacitor C between this pin and AGND for de-coupling.
37
RREF
MSC
A
Reference resistor connecting pin to determine an output current for each DAC. Connect a resistor of 10 k between RREF and AGND.
38 39
LPF11 LPF12
MSC MSC
A A
LPF characteristic setting pin for DAC1 and DAC8. Connect an external resistor between LPF11 and LPF12, and then capacitor between LPF12 and IGND to set up a cutoff frequency.
40
IGND
PS
A
GND pin for playback power supply setting DAC1, DAC9 and disturbance reduction LPF. Must be used in the same potential as other GND pins.
41 42 43 44
SGND SGND LPF91 LPF92
PS PS MSC MSC
D D A A
Pin connected to the chip substrate. Must be used in the same potential as other GND pins. LPF characteristic setting pin for DAC9 and DAC7. Connect an external resistor between LPF91 and LPF92 and then capacitor between LPF92 and IGND to set a cutoff frequency.
45
AVCC
PS
A
Power supply pin for an analog circuit, a reference supply voltage circuit, etc. Must be used in the same potential as other power supply pins.
46
DETMONI
OUT
A
Pin to monitor a signal for detecting abnormally emitted light. In a playback mode, the signal output is five times that in recording (ten times is posisible by a register setting). Has offset to VNR due to being outputted through a buffer of transistors.
47
PWRMONI
OUT
A
Laser emitting light monitor signal. In a low-level of RPHOLD, the amplifier output has 10 times gain compared with recording, and is equipped with AFF.
5
AN8725FH
s Pin Descriptions (continued)
Pin No. 48 Symbol AAF Category MSC A
ICs for Optical Disk Drive
Description AAF characteristic setting pin for optical monitor circuit. Connect an external resistor, capacitor between AAF and IVOUT and set up a cutoff frequency.
49
IVOUT
OUT
A
I to V conversion signal output pin. Connect an external variable resistor between IVIN and IVOUT.
50
IVIN
MSC
A
I to V conversion resistor connection pin. Connect an external variable resistor between IVIN and IVOUT.
51
IPD
MSC
A
Pin photo diode (PD) connection pin. Connect a pin photo diode for detecting a semiconductor laser emitting light. Connect anode to this pin. Applicable to a source-type PD which has a typical value of 40 A to 160 A output in object lens output power of 1 mW.
52
CGND
PS
A
GND pin in an optical monitor circuit. Must be used in the same potential as other GND pins.
53
CVCC
PS
A
Power supply pin in an optical monitor circuit. Must be used in the same potential as other power supply pins.
54
AGND
PS
A
GND pin exclusive to a analog circuit. Must be used in the same potential as other GND pins.
55
ERREF
IN
A
Abnormally emitting light detecting range setting pin. Sets a full scale voltage of DAC5 and DAC6. A setting range is VNR or more and input range of an external ADC or less.
56
VNR
IN
A
Reference level input pin for PWRMONI output. Input a reference voltage of 1.25 V of an external ADC.
57
DACMONI
OUT
A
DAC5, DAC6 monitor pin. DAC5 voltage is outputted when DAC56 SW register is low, DAC6 voltage is outputted when DAC6 voltage is high.
58
AVCC SGND SGND SGND RGND
PS
A
Power supply pin for an analog circuit, a reference supply voltage circuit, etc. Must be used in the same potential as other power supply pins.
59 60 61 62
PS PS PS PS
D D D A
Pin connected to the chip substrate. Must be used in the same potential as other GND pins.
GND pin for the lead current setting DAC7 and DAC8. Must be used in the same potential as other GND pins.
63
RDCP1
MSC
A
Pin to connect a de-coupling capacitor to protect the output current of DAC7, the read current setting circuit, from disturbance by a switching noise such as peak current. (Connects a capacitor between RDCP1 and RGND.)
6
ICs for Optical Disk Drive
s Pin Descriptions (continued)
Pin No. 64 Symbol RDCP2 Category MSC A Description
AN8725FH
Pin to connect a de-coupling capacitor to protect the output current of DAC7, the read current setting circuit, from disturbance by a switching noise such as peak current. (Connects a capacitor between RDCP2 and RGND.)
65
LDRP
OUT
A
Source type read current (DAC1, DAC7, DAC8, DAC9) output pin. Possible to set up the range of 0 mA to 150 mA in the precision of 8-bit + 4-bit + 5-bit + 4-bit. Output voltage range is 1.0 V to 3.5 V.
66 67 68
N.C. N.C. RVCC
PS
A
N.C. pin. Open the pin or connect to GND. Power supply pin for read current setting DAC7, DAC8. Consumes approximately a quarter of the necessary read current. Must be used in the same potential as other power supply pins.
69
LDPK
OUT
A
Source-type peak current (DAC2) output pin. Possible to set the range of 0 mA to 150 mA in the accuracy of 8-bit. The output voltage range is 1.0 V to 3.2 V.
70
XLDPK
IN
A
Sink-type peak current output pin. Approximately three fourths of LDRK output current are outputted from this pin.
71
PKGND
PS
A
GND pin of DAC2 in the peak current setting circuit. Must be used in the same potential as other GND pins.
72
PKVCC
PS
A
DAC2 power supply pin in the peak current setting circuit. Consumes approximately a quarter of the setting current. Must be used in the same potential as other power supply pins.
73
PKDCP
MSC
A
Pin to connect a de-coupling capacitor to avoid the output current disturbance, which is caused by a switching noise such as peak current, in peak current setting circuit DAC2. (Connects a capacitor between PKDCP and PKGND.)
74
LDBI
OUT
A
Source-type bias current (DAC3) output pin. Possible to set the range of 0 mA to 150 mA in the accuracy of 8-bit. Output voltage range is 1.0 V to 3.2 V.
75
XLDBI
IN
A
Sink-type peak current output pin. Approximately three fourths of LDBI output current are outputted from this pin.
76
BIGND
PS
A
GND pin of a bias current setting circuit DAC3. Must be used in the same potential as other GND pins.
77
BIVCC
PS
A
Power supply pin of a bias current setting circuit DAC3. Consumes approximately one fourth of a setting current. Must be used in the same potential as other power supply pins. 7
AN8725FH
s Pin Descriptions (continued)
Pin No. 78 Symbol BIDCP Category MSC A
ICs for Optical Disk Drive
Description Pin to connect a de-coupling capacitor to avoid the output current disturbance, which is caused by a switching noise such as bias current, of a bias current setting circuit DAC3. (Connects a capacitor between BIDCP and BIGND.)
79 80
SGND SGND
PS PS
D D
Pin connected to the chip substrate. Must be used in the same potential as other GND pins.
s Absolute Maximum Ratings
Parameter Supply voltage Input voltage Outoput voltage Parts connecting pin voltage Supply current Pin current Power dissipation
*2 *1
Symbol VCC VIN VOUT VMSC ICC IPIN PD Topr Tstg
Rating 7.0 - 0.4 to VCC +0.4 - 0.4 to VCC +0.4 - 0.4 to VCC +0.4 80 -100 to +100 600 -20 to +75 -55 to +150
Unit V V V V mA mA mW C C
Operating ambient temperature Storage temperature
*1
Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: The power dissipation shown is for the IC package in single unit at Ta = 75C. Refer to "s Application Notes, 1. PD Ta curves of QFP080-P-1212".
s Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 4.50 to 5.50 Unit V
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C
Parameter Supply current Supply current Sleep mode supply current Reference voltage block Reference voltage output Reference voltage variation VREF VREF VCC = 4.5 V to 5.5 V, IREF = 0 mA VCC = 4.5 V to 5.5 V IREF = -1 mA to + 1 mA Maximum output current VOM IREF = -1.5 mA, difference from IREF = 0 mA 1.20 1.25 1.30 15 20 50 mV V mV ICC ISLP XCLR = low, digital I/O pin = open, IPD = 0 A Sleep = 1, IPD = 0 A 20 3 30 4 mA mA Symbol Conditions Min Typ Max Unit
8
ICs for Optical Disk Drive
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
Parameter Digital block High-level input voltage Low-level input voltage High-level input voltage (Schmitt-trigger input) Low-level input voltage (Schmitt-trigger input) High-level output voltage Low-level output voltage VIH VIL To be applied to a digital input pin To be applied to a digital input pin 0.8 x VCC 0.8 x VCC 0.8 x VCC 75 100 Symbol Conditions Min Typ
AN8725FH
Max 0.2 x VCC 0.2 x VCC 0.2 x VCC 0.4 125 80 10
Unit
V V V V V V
VIHSHC To be applied to PWMSK, ERFIL pin VILSHC To be applied to PWMSK, ERFIL pin VOH VOL1 VOL2 IOH = -2 mA IOL = +2 mA IOL = +0.5 mA Pull-up: VIL = 0 V Pull-down: VIH = 5.0 V To be applied to a digital input pin, VOH = 5.25 V To be applied to a digital input pin, VOL = 0 V
Input pull-up, pull-down resistance Input leak
RPD ILKH ILKL
k A
Entire optical monitor Offset voltage at playback VPMOFR VR1 = 1 k, IPD = 0 mA VR1 = 1 k, difference from an ideal value at IPD = 100 A to 200 A Offset voltage at recording VPMOFW VR1 = 1 k, IPD = 0 mA VR1 = 1 k, difference from an ideal value at IPD = 100 A to 2 000 A Gain ratio Maximum output voltage Minimum output voltage f characteristics at playback f characteristics at recording Settling time at playback Settling time at recording GR VPM max VPM min fPMR AAF AAF-off VR1 = 1 k, -3 dB, IPD = 100 A to 200 A OFF fPMW VR1 = 1 k, -3 dB, IPD = 100 A to 2 000 A GPMR /GPMW , output = VNR +0.6 V to 2.0 V -15 -40 -15 -20 9.0 0 0 10.0 15 40 15 20 11.0 VNR- 0.015 400 400 times V V MHz MHz ns ns mV mV
VCC x VCC x 0.73 0.78 4 6 6 7.5 200 200
tPMSETR VR1 = 1 k, error 0.5%, output variation: Range of 0 V to 2 V tPMSETW VR1 = 1 k, error 0.5%, output variation: Range of 0 V to 2 V
9
AN8725FH
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
Parameter Symbol Conditions
ICs for Optical Disk Drive
Min
Typ
Max
Unit
Current amplification changeover Gain at playback Gain at recording Gain ratio I to V conversion block Offset voltage DAC1 block Resolution Integral linearity error Differential linearity error Maximum output current Offset current RES1 EL1 ED1 I1max I1OF1 DAC1 = "FFh", DAC8 [Fh], DAC7 [0h], DAC9 [00h] "00h" LPF-on, DAC8 [Fh], DAC7 [0h], DAC9 [00h], DAC7, DAC8 characteristics included "00h" LPF-off, DAC8 [Fh], DAC7 [0h], DAC9 [00h] -1.0 -1.0 70 -1 8 80 10.0 1.5 90 1 bit LSB LSB mA mA VIVOF VR1 = 0 , IPD = 0 mA -15 15 mV GIPDR GIPDW GRIPD Reg7 = "80h", IPD = 40 A to 240 A Reg7 = "C0h", IPD = 200 A to 3 200 A GIPDR /GIPDW 9.0 0.9 9.0 10.0 1.0 10.0 11.0 1.1 11.0 times times times
I1OF2 LPF on/off gain ratio Settling time
-250 0.95
1 400
250 1.05 800
A times ns
GRDAL GLPFON /GLPFOFF , input amplitude 0 V to 2 V tSDA1 XWR to DAC1 [10h to 8Fh], 2 LSB range, DAC7 [0h], DAC8 [Fh], DAC9 [00h] LPF-off, LPF11 pin open, RDCP2 pin open
DAC7 block Resolution Integral linearity error Differential linearity error Maximum output current Minimum output current Settling time RES7 EL7 ED7 I7max I7min tSDA7 Set to DAC7 = "Fh", DAC9 [1Fh], DAC1 [00h], DAC8 [0h] -1.0 - 0.5 133 4 150 0 50 1.0 0.5 170 0.1 500 bit LSB LSB mA mA ns
Set to DAC7 = "0h", - 0.1 DAC9 [1Fh], DAC1 [00h], DAC8 [0h] XWR to DAC7 [0h to Fh], DAC9 [1Fh], 0.5 LSB, DAC1 [00h], DAC8 [0h]
DAC8 block Resolution Integral linearity error Differential linearity error RES8 EL8 ED8 -1.0 - 0.5 4 1.0 0.5 bit LSB LSB
10
ICs for Optical Disk Drive
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
Parameter DAC8 block (continued) Maximum output current Minimum output current Settling time I8max I8min tSDA8 Set to DAC8 = "Fh", DAC1 [FFh], DAC9 [1Fh], DAC7 [0h] Set to DAC8 = "0h", DAC1 [FFh], DAC9 [1Fh], DAC7 [0h] XWR to DAC8 [0h to Fh], DAC1 [80h], 0.5 LSB, DAC9 [00h], DAC7 [0h] 70 4 80 5 50 Symbol Conditions Min Typ
AN8725FH
Max
Unit
90 6 250
mA mA ns
DAC2 block Resolution Integral linearity error Differential linearity error Maximum output current Offset current Settling time DAC3 block Resolution Integral linearity error Differential linearity error Maximum output current Offset current Settling time DAC4 block Resolution Integral linearity error Differential linearity error Maximum output current Offset current Settling time DAC9 block Resolution Integral linearity error Differential linearity error Maximum output current RES9 EL9 ED9 I9max DAC9 = "1Fh", DAC7 [Fh], DAC1 [00h], DAC8 [0h] -1.0 -1.0 133 5 150 1.0 1.0 170 bit LSB LSB mA RES4 EL4 ED4 I4max I4OF tSDA4 DAC2 = "FFh", DAC4 [Fh] DAC2 = "00h", DAC4 [Fh] XWR to DAC4 [0h to Fh], 0.5 LSB, DAC2 [FFh] -1.0 -1.0 133 - 0.1 4 150 300 1.0 1.0 170 0.1 600 bit LSB LSB mA mA ns RES3 EL3 ED3 I3max I3OF tSDA3 DAC3 = "FFh", DAC4 [Fh] DAC3 = "00h", DAC4 [Fh] XWR to DAC3 [10h to FFh], 2.0 LSB, DAC4 [Fh] -1.0 -1.0 133 - 0.1 8 150 200 5.0 1.0 170 0.1 450 bit LSB LSB mA mA ns RES2 EL2 ED2 I2max I2OF tSDA2 DAC2 = "FFh", DAC4 [Fh] DAC2 = "00h", DAC4 [Fh] XWR to DAC2 [10h to FFh], 2.0 LSB, DAC4 [Fh] -1.0 -1.0 133 - 0.1 8 150 100 5.0 1.0 170 0.1 250 bit LSB LSB mA mA ns
11
AN8725FH
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
Parameter DAC9 block (continued) Offset current I9OF1 Symbol Conditions
ICs for Optical Disk Drive
Min -2.0
Typ
Max
Unit
"00h" LPF-on, DAC7 [Fh], DAC8 [0h], DAC1 [00h], DAC7, DAC8 characteristics included
2.0
mA
I9OF2
"00h" LPF-off, DAC7 [Fh], - 0.85 DAC8 [0h], DAC9 [00h], DAC7, DAC8 characteristics included GLPFON /GLPFOFF , input amplitude 0 V to 2 V XWR to DAC9 [00h to 1Fh] 2 LSB range, DAC7[Fh], DAC8 [0h], LPF9-off, LPF91 pin open, RDCP1 pin open 0.95
0.85
LPF on/off gain ratio Settling time
GRDA9 tSDA9
1 400
1.05 800
times ns
Supply voltage monitoring block Abnormality release supply voltage Abnormality supply voltage VPSDL VPSOL VPSDH VPSOH Sweep VCC from low to high Sweep VCC from high to low Sweep VCC from high to low Sweep VCC from low to high 3.9 5.5 3.6 5.8 - 0.5 - 0.5 DAC5 = set to "Fh" and difference to ERREF pin DAC5 = set to "0h" and difference to VNR pin, at ERREF - VNR = 2.0 V XWR to DAC5 [0h to Fh], 0.5 LSB -20 105 4.2 5.8 3.9 6.1 4.5 6.1 4.2 6.4 0.5 0.5 20 145 1.5 s V V
Abnormally emitted light detection DAC5 Resolution Integral linearity error Differential linearity error Offset voltage RES5 EL5 ED5 V5OF1 V5OF2 Settling time tSDA5 4 125 0.5 bit LSB LSB mV
Abnormally emitted light detection DAC6 Resolution Integral linearity error Differential linearity error Offset voltage RES6 EL6 ED6 V6OF1 V6OF2 Settling time tSDA6 DAC6 = set to "Fh" and difference to ERREF pin DAC6 = set to "0h" and difference to VNR pin, at ERREF - VNR = 2.0 V XWR to DAC6 [0h to Fh] 0.5 LSB - 0.5 - 0.5 -20 105 4 125 0.5 0.5 0.5 20 145 1.5 s bit LSB LSB mV
12
ICs for Optical Disk Drive
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
Parameter Symbol Conditions Min -40 -50 9.0 4.5 0.9 9.0 4.5 VR1 = 1 k, -3 dB, IPD = 100 A to 200 A VR1 = 1 k, -3 dB, IPD = 100 A to 2 000 A XWR to XLDERR XWR to XLDERR XWR to sleep mode XWR to normal mode RPHOLD to DAC5 W, at having reached 0.5 LSB RPHOLD to DAC5 R, at having reached 0.5 LSB RPHOLD to DAC6 W, at having reached 0.5 LSB RPHOLD to DAC6 R, at having reached 0.5 LSB RPHOLD to XHFON RPHOLD to XHFON 2.5 5.0 Typ 10.0 5.0 1.0 10.0 5.0
AN8725FH
Max
Unit
Abnormally emitted light detection optical monitor block Offset voltage VEROFR In playback, DETMONI pin, IPD = 0 A VEROFW In recording, DETMONI pin, IPD = 0 A Gain GERR1 GERR2 GERW Gain ratio GERR1 GERW GERR2 GERW f characteristics at playback f characteristics at recording Control operation response Data write to XLDERR Data write to XLDERR Data write to sleep mode Data write to normal mode RPHOLD to DAC5 R W RPHOLD to DAC5 W R RPHOLD to DAC6 R W RPHOLD to DAC6 W R RPHOLD to HF module signal RPHOLD to HF module signal t203 t204 t205 t206 t39 t40 t41 t42 t43 t44 20 25 4 3 0.40 0.40 0.40 0.40 18 17 60 60 9 8 2.5 2.5 2.5 2.5 30 30 ns ns s s s s s s ns ns fERR fERW In playback, addr. "9": D4 = "0", IPD = 100 A to 200 A In playback, addr. "9": D4 = "1", IPD = 100 A to 200 A In recording, DETMONI pin, IPD = 100 A to 2 000 A 60 50 11.0 5.5 1.1 11.0 5.5 MHz MHz times times mV
13
AN8725FH
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
Parameter Recording Modulation Peak modulation signal response *1 t113 t114 t115 t116 t117 Bias modulation signal response
*1
ICs for Optical Disk Drive
Symbol
Conditions PKMD to LDPK 50% delay PKMD to LDPK 50% delay LDPK 50% to LDPK 50% LDPK 10% to LDPK 90% LDPK 90% to LDPK 10% BIMD to LDBI 50% delay BIMD to LDBI 50% delay LDBI 50% to LDBI 50% LDBI 10% to LDBI 90% LDBI 90% to LDBI 10%
Min
Typ
Max
Unit
18 17
30 30
ns
t112 -3 t112 -1 t112 +1 6 4 18 17 9 6 30 30 ns
t123 t124 t125 t126 t127
t122 -3 t122 -1 t122 +1 6 5 9 8
Note) *1: Resistive load (at 15 ) Conditions of t113 to t117 Measure at approximately 1.75 V of LDPK pin voltage. DAC1 [FFh], DAC8 [7h] DAC9 [1Fh], DAC7 [7h], DAC4 [Fh] DAC2 [00h to 80f] Conditions of t123 to t127 Measure at approximately 1.75 V of LDPK pin voltage. DAC1 [FFh], DAC8 [7h] DAC9 [1Fh], DAC7 [7h], DAC4 [Fh] DAC3 [00h to 80f]
* Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter Reference voltage block Reference voltage temperature characteristics *2 Digital block Low high input hysteresis (Schmidt trigger input) High low input hysteresis (Schmidt trigger input) Entire optical monitor Offset voltage temperature variation
Symbol
Conditions
Min
Typ
Max 30
Unit
VTEM VREF = 0 V, Ta = -20C to +75C
mV
VLHHYS To be applied to PWMSK, ERFIL pin VHLHYS To be applied to PWMSK, ERFIL pin

1.0 1.0

V V
VPMOFR In playback, VR1 = 1 k T IPD = 10 A to 200 A Ta = -20C to +75C VPMOFW In recording, VR1 = 1 k T IPD = 100 A to 2 000 A Ta = -20C to +75C
55
200
V C
30
150
Note) *2: Difference between VREF min. and VREF max. within the range of Ta = -20C to +75C.
14
ICs for Optical Disk Drive
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
* Design reference data (continued)
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
AN8725FH
Parameter
Symbol
Conditions Ta = -20C to +75C In playback, AAF-off rise In recording, rise x 10 x 1, at having reached 0.5% x 1 x 10, at having reached 0.5% In playback, -3 dB, VR1 = 1 k, AAF filter on, IPD 100 A to 200 A
Min -3 13 35
Typ 18 45 100 200 40.8
Max
Unit
Entire optical monitor (continued) Gain ratio variation to temperature Slew rate d GPMR GPMW 3 300 500 kHz ns % V/s
S1PMR S1PMW
Signal changeover response
tPMSW1 tPMSW2 fPMROF
f characteristics Current amplification block Gain variation to temperature
dGIPDR In playback, IPD = 60 A to 240 A, Ta = -20C to +75C dGIPDW In recording, IPD = 0.2 mA to 3.2 mA, Ta = -20C to +75C
-3 -3 -3

3 3 3
%
Gain ratio variation to temperature Signal changeover response
d
GIPDR In playback, IPD = 60 A to 240 A, GPMW In recording, IPD = 0.2 mA to 3.2 mA, Ta = -20C to +75C
%
tIPDSW1 x 10 x 1, at having reached 0.5% tIPDSW2 x 1 x 10, at having reached 0.5%

100 200
300 500
ns
I to V conversion Offset voltage variation to temperature Slew rate Open loop gain Zero-cross frequency Settling time AAF analog SW On resistance at playback On resistance at recording DAC1 f characteristics fDAC1 Sine wave signal equivalent to 40 mA[p-p] of current amplitude at LPF12 pin, DAC7 [0h], DAC8 [Fh], DAC9 [00h], RDCP2 pin = 1 000 pF 1 MHz RAFR RAFW 0 between IVOUT and IVIN 175 200 250 300 dVIVOF VR1 = 0 , IPD = 0 A, dT Ta = -20C to +75C SlIV GIV f0IV tIVSET Output amplitude at 1 V[p-p] Error 0.5%, output variation: within the range of 0 V to 2 V 20 10 34 50 8 100 50 200 V C V/s dB MHz ns
15
AN8725FH
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
* Design reference data (continued)
ICs for Optical Disk Drive
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter DAC1 (continued) Driving current temperature characteristics Offset current variation to temperature
Symbol
Conditions
Min
Typ
Max
Unit
ErrDA1
Including DAC8 when setting at "FFh", DAC7 [0h], DAC8 [Fh], Ta = 0C to +75C "00h", LPF-on, including DAC7, DAC8, DAC7 [0h], DAC8 [Fh], Ta = -25C to +75C "00h", LPF-off, including DAC7, DAC8, DAC7 [0h], DAC8 [Fh], Ta = -25C to +75C
7
10
%
dI1ON dT dI1OF dT
2
10
A C
0.5
10
DAC9 f characteristics fDAC9 Sine wave signal equivalent to 40 mA[p-p] of current amplitude at LPF22 pin, DAC7 [Fh], DAC8 [0h], DAC1 [00h], RDCP1 pin = 1 000 pF Including DAC8 at setting at "1Fh", DAC7 [Fh], DAC8 [0h], Ta = 0C +75C "00h", LPF-on, including DAC7, DAC8, DAC7 [Fh], DAC8 [0h], Ta = -25C +75C "00h", LPF-off, including DAC7, DAC8, DAC7 [Fh], DAC8 [0h], Ta = -25C to +75C DAC7 [Fh], DAC8 [0h], DAC9 [1Fh], DAC1 [00h], Ta = -20C to +75C 1 MHz
Driving current temperature characteristics Offset current variation to temperature
ErrDA9
7
10
%
dI9ON dT dI9OF dT
2
10
A C
0.5
10
DAC7 Driving current temperature characteristics Offset current temperature characteristics DAC8 Driving current temperature characteristics Offset current temperature characteristics ErrDA8 DAC8 [Fh], DAC7 [0h], DAC1 [FFh], DAC9 [00h], Ta = -20C to +75C 0 8 15 % ErrDA7 0 8 15 %
dIDA7OF DAC7 [0h], DAC8 [0h], dT DAC9 [1Fh], DAC1 [00h], Ta = -20C to +75C
0.2
10
A C
dIDA8OF DAC8 [0h], DAC7 [0h], dT DAC1 [FFh], DAC9 [00h], Ta = -20C to +75C
0.2
10
A C
16
ICs for Optical Disk Drive
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
* Design reference data (continued)
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
AN8725FH
Parameter DAC2 Offset current temperature characteristics Driving current temperature characteristics Settling time
Symbol
Conditions
Min
Typ 6 40
Max
Unit A C % ns
dIDA2OF dT ErrDA2 tSDA2A DAC3 = "FFh", set to DAC4 = "Fh", Ta = -20C to +75C XWR to DAC2 [4: 10 h to 14h], 0.5 LSB DAC4 [Fh] XWR to DAC2 [7F: 10 h to 8 Fh], 1.0 LSB DAC4 [Fh]
10 10 100

tSDA2B
80
200
DAC3 Offset current temperature characteristics Driving current temperature characteristics Settling time dIDA3OF dT ErrDA3 tSDA3A DAC3 = "FFh", set to DAC4 = "Fh", Ta = -20C to +75C XWR to DAC3 [4: 10 h to 14h], 0.5 LSB DAC4 [Fh] XWR to DAC3 [7F: 10 h to 8Fh], 1.0 LSB DAC4 [Fh] 6 40 10 10 100 A C % ns
tSDA3B
80
200
DAC4 Offset current temperature characteristics Driving current temperature characteristics dIDA4OF dT ErrDA4 DAC4 = "Fh", set to DAC2 = "FFh", Ta = -20C to +75C 6 10 10 A C %
Supply voltage monitoring block Abnormal supply voltage detection hysteresis VPSDHYS Voltage difference between abnormality detection and release of supply voltage drop, VPSD1 -VPSDH VPSOHYS Voltage difference between abnormality detection and release of supply voltage drop, VPSOH -VPSOL Comparator in abnormally emitted light detection block Input offset voltage VPDCOF Insufficiently emitted light detection VPOCOF Excessively emitted light detection -5 -5 5 5 mV 300 mV
300
17
AN8725FH
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
* Design reference data (continued)
ICs for Optical Disk Drive
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min
Typ 150 150 150 150 -10
Max
Unit V C
Comparator in abnormally emitted light detection block (continued) Input offset voltage variation to temperature dVPDCOF Insufficiently emitted light detection dT dVPOCOF Excessively emitted light detection dT Abnormally emitted light detection response Abnormally emitted light release response DAC5 block Offset voltage variation to temperature DAC6 block Offset voltage variation to temperature dVDA5OF Set to "Fh" dT -10 80 V C V C dVDA5OF Set to "Fh" dT 80 V C tPWDNF tPWOVF tPWDR tPWOVF Insufficiently emitted light detection Excessively emitted light detection Insufficiently emitted light detection Excessively emitted light detection 20 20 300 300 300 300 ns ns
Optical monitor for abnormally emitted light detection Offset voltage variation to temperature dVEROFR In playback, dT IPD = 0 A dVEROFW In recording, dT IPD = 0 A Gain variation to temperature dGERR1 In playback, IPD = 100 A to 200 A, Ta = -20C to +75C dGERR2 In playback, IPD = 100 A to 200 A, Ta = -20C to +75C dGERW In recording, IPD = 100 A to 2 000 A, Ta = -20C to +75C Gain ratio variation to temperature Settling time d GERR Ta = -20C to +75C GERW tERR tERW Signal changeover response (x 10 mode) In playback, error: 0.5%, current variation 100 A to 200 A In playback, error: 0.5%, current variation 100 A to 2 000 A -3 -3 -3 -3 -20 -20 0.5 0.5 0.5 0.5 250 100 170 550 210 200 3 3 3 3 400 200 400 1 000 ns % ns %
tERSW1A Playback recording 0.5% addr "9": D4 = "0" x 10 tERSW2A Recording playback 0.5% addr "9": D4 = "0" x 10
18
ICs for Optical Disk Drive
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
* Design reference data (continued)
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
AN8725FH
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Optical monitor for abnormally emitted light detection (continued) Signal changeover response x 5 mode tERSW1B Playback recording 0.5%, addr "9": D4 = "1" x 5 tERSW2B Recording playback 0.5%, addr "9": D4 = "1" x 5 Control operation response Data writing to LPF-off Data writing to LPF-on Data writing to AAF-off Data writing to AAF-on Data writing to DAC6 changeover *3 Data writing to DAC5 changeover *3 Data writing to shunt on *4 Data writing to shunt off *4 Control operation response RPHOLD to PWRMONI changeover RPHOLD to PWRMONI changeover RPHOLD to mask signal *5 Mask signal width at RPHOLD *5 RPHOLD to mask signal *5 Mask signal width at RPHOLD *5 RPHOLD to AAFRST signal *5 AAFRST signal width *5 Shunt circuit "on" Shunt circuit "off"
*6 *6
200 250
400 500
ns
Register setting output t87 t88 t85 t86 t207 t208 t89 t90 XWR to LPF "off" XWR to LPF "on" XWR to AAF "off" XWR to AAF "on" XWR to DAC6 0.5% XWR to DAC5 0.5% XWR to shunt circuit "on", LDERR register "1" XWR to shunt circuit "off", LDERR register "0" RPHOLD to x 1, at having reached 0.5% RPHOLD to x 10, AAF, at having reached 0.5% RPHOLD to mask signal Mask signal to mask signal at RPHOLD high RPHOLD to mask signal Mask signal to mask signal at RPHOLD low RPHOLD to AAFRST AAFRST to AAFRST XCLR to shunt circuit "on" XCLR to shunt circuit "off" 0.8 250 60 20 0.9 0.9 2.0 600 200 200 2.5 2.5 430 230 s ns ns ns s s ns ns
Input output t37 t38 t45 t46 t47 t48 t211 t212 t49 t50 0.4 0.4 15 1 15 1 15 2 0.9 0.9 30 1.1 30 1.1 30 2.2 430 230 s s ns s ns s ns s ns ns
Note) *3: Measure at DACMONI pin. *4: Measuring is impossible outside the IC. *5: Measuring is impossible outside the IC. The values of t46, t48 and t212 are determined by the built-in resistor Rin1 (10 k, allowance: 10%) and the external C1. *6: Measuring is impossible outside the IC. The built-in resistor Rin2 (10 k, allowance: 10%) and the external C2.
19
AN8725FH
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
* Design reference data (continued)
ICs for Optical Disk Drive
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter Control operation response AAF reset "reset"
*6 *6 *7
Symbol
Conditions AAFRST to AAF "reset" AAFRST to AAF "normal" ERFIL to XLDERR1 ERFIL to XLDERR1 XWR to AAFRST test mode XWR to AAFRST normal mode XWR to SW6 test mode XWR to SW6 normal mode XWR to XHFON test mode XWR to XHFON normal mode XWR to SW2 test mode XWR to SW2 normal mode XWR to SW3 test mode XWR to SW3 normal mode XWR to SW1 test mode XWR to SW1 normal mode XWR to LEVSW test mode XWR to LEVSW normal mode XWR to AAF filter reset XWR to AAF filter normal XWR to x 1, when reaching 0.5% XWR to x 10, when reaching AAF 0.5% XWR to XHFON XWR to XHFON XWR to SW2 "on" DAC2 2.0 LSB XWR to SW2 "on" DAC2 x 50% XWR to SW2 "off" 0 mA 2.0 LSB XWR to SW2 "on" DAC2 x 50%
Min
Typ 1.2 15
Max
Unit
Input output (continued) t213 t214 t215 t216 200 200 2.0 ns ns s ns
AAF reset "normal"
Mask signal (wrt. ERFIL) Register output Mode changeover AAFRST Mode changeover SW6 Mode changeover XFHON Mode changeover SW2 Mode changeover SW3 Mode changeover SW1 Mode changeover LEVSW Test mode operation AAF filter
*8
t55 t56 t57 t58 t59 t60 t61 t62 t63 t64 t67 t68 t69 t70 t75 t76 t77 t78 t79 t80 t81 t81A t82 t82A
25 200 90 60 20 25 30 20 30 20 20 35 0.55 0.35 25 200 0.4 0.4 20 25 90 30 50 20
60 400 200 150 60 70 80 50 70 50 50 100 2.0 1.0 100 400 0.9 0.9 60 70 200 80 150 60
ns
ns
ns
ns
ns
ns s
ns s
Test mode operation Current amplification changeover Test mode operation XHFON Test mode operation SW2
*9
ns
ns
Note) *6: *7: *8: *9:
Measuring is impossible outside the IC. The built-in resistor Rin2 (10 k, allowance: 10%) and the external C2. Measuring is impossible outside the IC. No external fitting until on/off of switch. Set the data to "7Fh".
20
ICs for Optical Disk Drive
s Electrical Characteristics at VCC = 5.0 V, Ta = 25C (continued)
* Design reference data (continued)
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
AN8725FH
Parameter Register output (continued) Test mode operation SW3 *9
Symbol
Conditions XWR to SW3 "on" DAC3 2.0 LSB XWR to SW3 "on" DAC3 x 50% XWR to SW3 "off" 0 mA 2.0 LSB XWR to SW3 "on" DAC3 x 50% XWR to SW1 "off" XWR to SW1 "on" XWR to DAC5 W, at having reached 0.5 LSB XWR to DAC5 R, at having reached 0.5 LSB XWR to DAC6 W, at having reached 0.5 LSB XWR to DAC6 R, at having reached 0.5 LSB
Min
Typ
Max
Unit
t83 t83A t84 t84A
330 30 50 20 20 35 1.0 0.7 1.0 0.7
600 80 150 60 100 150 2.5 2.5 2.5 2.5
ns
Test mode operation SW1
*10
t91 t92 t93 t94
ns s
Test mode operation DAC5
Test mode operation DAC6
t95 t96
s
Note) *9 : Data sets up "7Fh". *10 : DAC1 = 7 Fh, DAC9 = 00 h, DAC7 = 0h, DAC8 = Fh
s Terminal Equivalent Circuits
Pin No. 1 2 3 4 5 6 Symbol Pin 1: SGND Pin 2: DGND Pin 3: DGND Pin 4: PKMD Pin 5: BIMD Pin 6: RPHOLD Equivalent circuit
DVCC 5 k Pin 4, 5, 6, 11, 12, 13, 14, 27 100 k DGND
7 8
Pin 7: XWR Pin 8: XRD 100 k 5 k Pin 7, 8, 26
DVCC
DGND
21
AN8725FH
s Terminal Equivalent Circuits (continued)
Pin No. 9 DVCC Symbol
ICs for Optical Disk Drive
Equivalent circuit
DVCC Pin 9, 34 DGND
10 11 12 13 14 15 16 17 18
DGND Pin 11: AD0 Pin 12: AD1 Pin 13: AD2 Pin 14: AD3 Pin 15: DT0 Pin 16: DT1 Pin 17: DT2 Pin 18: DT3
Refer to pin 4
DVCC
DGND DVCC Pin 15, 16, 17, 18, 22, 23, 24, 25
DGND
19 20 21 22 23 24 25 26 27 28 29
Pin 19: DGND Pin 20: SGND Pin 21: SGND Pin 22: DT4 Pin 23: DT5 Pin 24: DT6 Pin 25: DT7 XLDEN XCLR DGND XLDERR
Refer to pin 15
Refer to pin 7 Refer to pin 4
DVCC
Pin 29, 32 DGND
22
ICs for Optical Disk Drive
s Terminal Equivalent Circuits (continued)
Pin No. 30 31 Symbol Pin 30: PWMSK Pin 31: ERFIL Equivalent circuit
AN8725FH
DVCC Schmitt-trigger Pin 30, 31
10 k DGND
32 33 34 35 36
XHFON DGND DVCC AGND VC
Refer to pin 29 Refer to pin 9
AVCC
36 50
AGND
37
RREF
AVCC
37
AGND
38 LPF11
AVCC
Pin 38, 43
IGND
23
AN8725FH
s Terminal Equivalent Circuits (continued)
Pin No. 39 LPF12 Symbol
ICs for Optical Disk Drive
Equivalent circuit AVCC
Pin 39, 44
IGND 40 41 42 43 44 45 Pim 40 : IGND Pim 41 : SGND Pim 42 : SGND LPF91 LPF92 AVCC AVCC Pin 45, 58 Refer to pin 38 Refer to pin 39
AGND 46 DETMONI
CVCC AVCC
46
CGND
47
PWRMONI 50 49 48 AVCC
47
CGND
24
ICs for Optical Disk Drive
s Terminal Equivalent Circuits (continued)
Pin No. 48 AAF Symbol
50 49
AN8725FH
Equivalent circuit
AVCC
48
CGND 60
49
IVOUT
50 AVCC
49
CGND
50
IVIN
AVCC
50
CGND 51 IPD
CVCC AVCC
51
CGND
52
CGND
25
AN8725FH
s Terminal Equivalent Circuits (continued)
Pin No. 53 CVCC 53 Symbol CVCC
ICs for Optical Disk Drive
Equivalent circuit
CGND 54 55 56 AGND Pim 55 : ERREF Pim 56 : VNR AVCC
Pin 55, 56 AGND 57 DACMONI
AVCC
57
AGND
58 59 60 61 62 63 64
AVCC Pim 59 : SGND Pim 60 : SGND Pim 61 : SGND Pim 62 : RGND Pim 63 : RDCP1 Pim 64 : RDCP2
Refer to pin 45
RVCC
Pin 63, 64 RGND
26
ICs for Optical Disk Drive
s Terminal Equivalent Circuits (continued)
Pin No. 65 LDRP
68
AN8725FH
Symbol
RVCC
Equivalent circuit
AVCC
65
SGND
66 67 68
N.C. N.C. RVCC 68 RVCC

RGND 69 LDPK
Pin 70, 75 AVCC
Pin 69, 74
SGND PBGND
70 XLDPK 70 75
SGND
69
74
27
AN8725FH
s Terminal Equivalent Circuits (continued)
Pin No. 71 72 PKGND PKVCC
Pin 72 77 PKVCC BIVCC
ICs for Optical Disk Drive
Symbol
Equivalent circuit
SGND
73
PKDCP
AVCC
Pin 73, 78
SGND PBGND 74 75 76 77 78 79 80 LDBI XLDBI BIGND BIVCC BIDCP SGND SGND Refer to pin 69 Refer to pin 70 Refer to pin 72 Refer to pin 73
s Application Notes
1. PD Ta curves of QFP080-P-1212
2.000 1.920 1.800 1.600
Mounted on standard board (glass epoxy: 75 mm x 75 mm x t0.8 mm) Rth(j-a) = 65.1C/W
Power dissipation PD (W)
1.400 1.200 1.000 0.800 0.600 0.400 0.200 0.000 Independent IC without a heat shink Rth(j-a) = 125.0C/W
0
25
50
75
100
125
150
Ambient temperature Ta (C)
28
ICs for Optical Disk Drive
s Application Notes (continued)
2. Timing chart 1) Definition of rising and falling
AN8725FH
tHL 90% 10%
tLH 90% 10%
2) Interface
In write t2 AD0 to AD3 Write address t3 Write data t4 t7 t6 t9 Read address t10 Read data t14 In read t13
DT0 to DT7 XWR
t11 XRD
Parameter Switching characteristics
Symbol tLH tHL 10% to 90% 90% to 10%
Conditions
Min 50 70 10 35 10 0 0 0 0
Typ
Max 10 10 50 30
Unit ns
Pulse width
t4 t11
XWR to XWR XRD to XRD AD defined to XWR DT defined to XWR AD defined to XRD XRD to DT defined XWR to AD released XWR to DT released XRD to AD released XRD to DT released
ns
Setup time
t2 t3 t9 t10
ns
Hold time
t6 t7 t13 t14
ns
29
AN8725FH
s Application Notes (continued)
3. I/O specifications * Parallel interface 1) I/O level is CMOS.
ICs for Optical Disk Drive
2) Transfers a digital signal to DAC and each mode setting register with 4 addresses, 8 data and 2 control signals. Address signal AD0 to AD3 Data signal DT0 to DT7 Control signal XWR, XRD 3) Write can be done at the rise of XWR. However, selection of a write register can be done at the fall of XWR. DAC and register data are stored at D-FF. 4) Read appears on DT0 to DT7 at XRD = low. 5) Refer to "s Application Notes, 2. Timing chart" for the timing chart. 6) Each signal line is pulled up and down as below: Pull-down to GND with 100 k AD0 to AD3 DT0 to DT7 Pull-up to VCC with 100 k XWR WRD
30
ICs for Optical Disk Drive
s Application Notes (continued)
4. Signal flow
DT0 to DT7 DAC78 "0" register 4 4
AN8725FH
DAC7 DAC8
DAC1 "1" register
8
DAC1
DAC2 "2" register
8
DAC2
DAC3 "3" register
8
DAC3
AD0 4 to AD3 XWR XRD
WR0 RD0 WR1 RD1 WR2 RD2 WR3 RD3 WR4 RD4 WR5 RD5 WR6 RD6 WR7 RD7 WR8 RD8 WR9 RD9 WRA RDA WRB RDB WRC RDC WRE RDE WRF RDF
DAC4 "4" register
4
DAC4
DAC56R "5" register
8 DAC5
DAC56W "6" register
8
DAC6
CNTL1 "7" register
CNTL2 "8" register
CNTL3 "9" register
ERRMSK "A" register
ERRFAC "B" register
DAC9 "C" register
5
DAC9
DUMY "E" register
LDDENB "F" register
31
AN8725FH
s Application Notes (continued)
5. Register circuit configuration 1) DAC1, DAC2, DAC3, DAC4, DAC9
D-FF 8-bit DT0 to DT 7 White DAC* (0 to 7) D Q 8-bit
ICs for Optical Disk Drive
Analog output DAC*
DAC* (0 to 7)
WR*
CK
3-state driver 8-bit Read DAC* (0 to 7) 8-bit DAC* (0 to 7)
RD*
2) DAC7, DAC8
D-FF 8-bit DT0 to DT 7 White DAC78 (0 to 7) D Q 8-bit DAC78 (0 to 7) 4-bit DAC78 (4 to 7) DAC7 4-bit
WR0
CK
3-state driver 8-bit Read DAC78 (0 to 7) 8-bit DAC78 (0 to 7)
4-bit DAC78 (0 to 3) DAC8 4-bit
RD0
32
ICs for Optical Disk Drive
s Application Notes (continued)
5. Register circuit configuration (continued) 3) DAC56R, DAC56W
D-FF 8-bit DT0 to DT7 White data (0 to 7) D Q 8-bit Data (0 to 7) A Selector
AN8725FH
WR5
CK Data (0 to 3) 3-state driver 8-bit Read data (0 to 7) 8-bit Data (0 to 7) RPHOLD = low output A RPHOLD = high output B Data (4 to 7) Excessively emitted light DAC6 4-bit Insufficiently emitted light DAC5 4-bit
RD5
D-FF 8-bit White data (0 to 7) D Q 8-bit Data (0 to 7) B
WR6
CK
3-state driver 8-bit Read data (0 to 7) 8-bit Data (0 to 7)
RD6
RPHOLD
33
AN8725FH
s Application Notes (continued)
5. Register circuit configuration (continued) 4) CNTL1, CNTL2, CNTL3, ERRMSK, ERRFAC, DUMY, LDDENB
D-FF 8-bit DT0 to DT7 White data (0 to 7) D Q
ICs for Optical Disk Drive
8-bit Data (0 to 7) Each control circuit
WR*
CK
3-state driver 8-bit Read data (0 to 7) 8-bit Data (0 to 7)
RD*
34
ICs for Optical Disk Drive
s Application Circuit Example
AN8725FH
PD
C11
C10
R5 C9
C8
47 PWRMONI
57 DACMONI
43 LPF91 R3
46 DETMONI
R4
55 ERREF
49 IVOUT
54 AGND
52 CGND
C7
C6
42 SGND
41 SGND 40 IGND 39 LPF12 C5 38
R2
60 SGND
59 SGND
SGND 61 RGND 62
R6 C12 C13 LD R7 R9
RDCP1 63 RDCP2 64
44 LPF92
53 CVCC
58 AVCC
45 AVCC
56 VNR
50 IVIN
48 AAF
51 IPD
LPF11 37 RREF R1 36 VC 35 AGND 34 DVCC 33 DGND
C3 C4
R8
LDRP 65 N.C. 66
C14
VCC
R10
67 N.C. RVCC 68 LDPK 69 XLDPK 70 PKGND 71
C15
32 XHFON 31 30 29
C2 C1
ERFIL (Rin2) PWMSK (Rin1) XLDERR
PKVCC 72 PKDCP 73 LDBI 74 XLDBI 75 BIGND 76
C16 tantalum
28 DGND 27 XCLR 26 XLDEN 25 DT7 24 DT6 23 DT5 22 DT4 21 SGND DGND 10 AD0 11 AD1 12 AD2 13 AD3 14 DT0 15 DT1 16 DT2 17 DT3 18 DGND 19 SGND 20 1 2 3 4 5 6 7 8 XRD 9
C19
R11
C17 C18 tantalum
BIVCC 77 BIDCP 78 SGND 79 SGND 80
RPHOLD
SGND
DGND
DGND
PKMD
BIMD
XWR
DVCC
35
AN8725FH
s Application Circuit Example (continued)
* Resistance and capacitance Symbol R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 (Rin1) (Rin2) Resistor value 10 1 10 82 10 82 3 3 10 10 Unit k k k k k k Symbol C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19
ICs for Optical Disk Drive
Resistor value 220 100 0.1 0.01 0.1 18 0.1 0.1 5 600 5 600 0.1 0.1 1 0.1 1 0.1
Unit pF pF F F F pF F F pF pF F F F F F F
36

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