View CXB1548Q-Y_40383.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CXB1548Q-Y
Laser Driver
Description The CXB1548Q-Y is a high-speed monolithic Laser Driver/Current Switch with ECL input level. Open collector outputs are provided at the output pins (Q, Q) and have the capability of driving modulation current of 60mApp at a max. data rate of 2.0Gbps (NRZ). DRIVADJ and SDRIV inputs control the modulation current amplitude, and BIASADJ, SBIAS inputs control the bias current. Modulation and bias current can be controlled by either voltage or current through these pins. This device includes three Operational Amplifiers and Laser Shutdown function. Features * Maximum data rate (NRZ): 2.0Gbps (Typ.) * Differential Data input: ECL * On chip three Operational Amplifiers * Laser Shutdown Input: TTL Applications * SONET/SDH: 155,622Mb/s,1.2Gb/s * Fiber channel: 133,266,532Mb/s,1.062Gb/s * FDDI: 125Mb/s ESCON: 200Mb/s HDTV: 1.5Gb/s Absolute Maximum Ratings * Supply voltage * Input voltage * Differential input voltage * Output current (Continuous) Input current (Continuous) * Storage temperature 32 pin QFP (Ceramic)
Vcc - VEE VIN |VIN - VIN| IQ, IBIAS IDRVADJ IBIASADJ Tstg
-0.3 to +7.0 VEE to +0.5 0 to 2.5 0 to 80 0 to 8 0 to 8 -65 to +150
V V V mA mA mA C
Recommended Operating Conditions * DC power supply voltage Vcc - VEE * Operating case temperature Tc Structure Bipolar silicon monolithic IC
4.75 to 5.46 0 to +85
V C
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
-1-
E94721-PK
CXB1548Q-Y
Block Diagram and Pin Assignment
LDOFF
OUT3
VCC2
IN3
IN3
24
23
22
21
20
19
18
17
VEE1 25 VBB 26 D 27 D 28
VREF
16 OUT2 15 IN1 14 IN1 13 IGND 12 OUT1 11 BIASADJ 10 VEE2 9 SBIAS 8
IN2
6
VOLTAGE SOURCE (VBB)
VOLTAGE SOURCE (VREF)
VCC1 29 P 30 P 31 DRIVADJ 32
INPUT SIGNAL MONITOR
MODULATION GENERATOR
BIAS GENERATOR
1
2
3
4
5
7
SDRIV
BIASB
VEE2
Q
IN2
Truth table LDOFF H H L L D L H L H Q H L H H P H L H L
In a case of resistor load
-2-
BIASA
Q
Q
Q
CXB1548Q-Y
Pin Description Pin No. Symbol Typical Voltage (V) DC 0mA to 8mA1 0mA to 6mA2 VEE to VEE +2.5V -5.2V AC -- --
3 4 5 6
Equivalent circuit
Description
1
SDRIV
Modulation generator current monitor.
32
DRIVADJ
--
VCC
Modulation generator current adjustment. Negative power supply pin.
2, 10 3
VEE2
--
1
Q 4 5 Q 6
--
0mA to 60mA1 0mA to 40mA2 0mA to 60mA1 0mA to 40mA2
32
2 10
VEE
Modulation generator current output.
--
7
BIASB 0mA to 30mA --
7
8
Bias generator current output.
VCC
8
BIASA
9
SBIAS
0mA to 8mA
9
--
11
Bias generator current monitor.
11
BIASADJ
VEE to VEE +2.5V
--
2 10
VEE
Bias generator current adjustment. Output pin for OpAmp. Input pins for OpAmp.
12 14 15 16 18 19 20 21 22 13
OUT1 IN1 IN1 OUT2 IN2 IN2 OUT3 IN3 IN3 IGND open or VEE -- VEE +0.7V to -1.0V
15 19 22 IN IN OUT 12 16 20
Output pin for OpAmp. Input pins for OpAmp.
--
14 18 21
13
Output pin for OpAmp. Input pins for OpAmp. OpAmp switch pin IGND = VEE: active IGND = OPEN: inactive
1 VEE = -5.46V to -4.94V 2 VEE = -4.94V to -4.75V
-3-
CXB1548Q-Y
Pin No.
Symbol
Typical Voltage (V) DC AC
Equivalent circuit
Description
VCC
17
VREF
VEE +2.5V
--
VREF GEN
17
Reference voltage (VREF - VEE: 2.5V) Max. drive current 3mA
VEE
23
LDOFF
open or VEE.
--
Shut down switch pin LDOFF = L (VEE): shut down LDOFF = H (open): Laser active Positive Power supply pin. Negative Power supply pin.
VCC 900
24 25
VCC2 VEE1
0V -5.2V
-- --
26
VBB
-1.3V
--
26
Reference voltage (-1.3V) Use for the reference voltage in the case of single-phase input. Max. drive current 200A
500 VEE
25
VEE1
-5.2V
--
29 VCC
Negative power supply pin.
27
D -- -1.84V to -0.81V
27
200
200 28
Data signal input.
28
D
25 VEE
29
VCC1
0V
--
Positive power supply pin.
-4-
CXB1548Q-Y
Pin No.
Symbol
Typical Voltage (V) DC AC
Equivalent circuit
Description
30
31
30
P
--
200 200
0mA to 2.7mA
Input signal monitor output.
31
P
--
1.7mA VEE
-5-
CXB1548Q-Y
Electrical Characteristics * DC Electrical Characteristics Laser Driver part Item Power supply current
(VCC1 = VCC2 = GND, VEE1 = VEE2 = -5.46 to -4.75V, Tc = 0 to +85C) Symbol IEE Condition IQ = 0mA, IBIAS = 0mA IQ = 60mA, IBIAS = 60mA VEE = -5.46 to -4.94V IQ VQ IBIAS VBIAS VSQ VSBIAS IP VP VEDH VEDL IEDH VTDH VTDL ITDH ITDL VREF VBB VREF - VEE Tc = 25C VEE = -4.94 to -4.75V Tc = 25C IBIASA + IBIASB Min. -99 -240 60 40 -2.5 60 -2.7 -2.7 -2.7 1 -2.5 -1.17 -1.84 -- VEE + 2.0 VEE - 0.5 -- -320 2.25 -1.38 Typ. -69 -203 -- -- -- -- -- -- -- 1.7 -- -- -- -- -- -- -- -- 2.5 -1.32 Max. -- -- -- -- +2.0 -- 0 0 0 2.7 +2.0 -0.81 -1.48 20 Vcc VEE + 0.8 10 -- 2.75 -1.26 V A V A V mA V V mA mA Unit
Max. Modulation current Modulation output voltage range Max. Bias current Bias output voltage range Modulation current monitor output voltage range Bias current monitor output voltage range Input signal monitor current Input signal monitor output voltage range ECL input High voltage ECL input Low voltage ECL input High current TTL input High voltage TTL input Low voltage TTL input High current TTL input Low current Reference bias voltage for OP Amp. Reference bias voltage Ratio of current setup Item Modulation current vs. Modulation monitor current Modulation current vs. Modulation control current Bias current vs. Bias monitor current Bias current vs. Bias control current
Symbol S1 S2 S3 S4
Condition at voltage control application at current control application at voltage control application at current control application
Min. 9.0 6.5 11.0 7.4
Typ. 11.4 8.6 12.0 9.8
Max. 12.0 10.5 13.0 12.0
* AC Electrical Characteristics Laser Driver part (VCC1 = VCC2 = GND, VEE1 = VEE2 = -5.46 to -4.75V, Tc = 0 to +85C, RI = 25 to GND) Item Max. Data rate Shut Down Time Rise time Fall time Symbol fDMAX TSHUT TTLH TTHL 20 to 80% IQ = 60mA, IBIAS = 0 -6- NRZ Condition Min. 1.6 -- -- -- Typ. 2.0 -- 170 150 Max. -- 30 -- -- Unit Gbps s ps
CXB1548Q-Y
* AC & DC Electrical Characteristics Operational Amplifier part Item Power supply current Input offset voltage Input bias current Input offset current Input voltage range Open Loop Gain Output voltage range Input Impedance Slew Rate Unity Gain Band width Output drive current range Symbol IEE Voff Ib Ioff Vin Av Vo Zin SR funit Io
(VCC2 = GND, VEE1 = IGND = -5.46 to -4.75V, Tc = 0 to +85C) Condition Min. -- -- -- -- VEE + 0.7 -- VEE + 0.7 1.0 -- 30 -3.0 Typ. -9.0 1.0 -1.0 200 -- 40 -- -- 18 -- -- Max. -- -- -- -- -1.0 -- -1.0 -- -- -- 3.0 Unit mA mV A nA V dB V M V/s MHz mA
Application Circuit Current Control Application
VSHUT TTL Level Single Input L : Shut down Open High
LDOFF
OUT3
VCC2
IN3
IN3
IN2
0.01F VEE1 25 VEE = -5.2V 0.01F VBB 26 D 27 D VCC1 29 P 200 IP DRIVADJ 32 P 30 31 28
24
23
22
21
20
19
18
IN2
17
VOLTAGE SOURCE (VBB) VOLTAGE SOURCE (VREF)
VREF
16 OUT2 15 IN1 14 IN1 13 IGND IGND = VEE Op Amp Active 12 OUT1 11 BIASADJ VEE = -5.2V 10 9 VEE2 SBIAS
ECL Level Single Input VIN
INPUT SIGNAL MONITOR
MODULATION GENERATOR
BIAS GENERATOR
1
2
3
4
5
6
7
8
IBIASADJ
SDRIV
BIASB
BIASA
VEE2
Q
Q
Q
Q
IDRIVADJ IQ IQ : IDRVADJ 9 : 1 VEE = -5.2V
5.1
IBIAS : IBIASADJ 10 : 1 0.1H IBIAS
Laser Diode
-7-
CXB1548Q-Y
Measurement Circuit (DC)
VSHUT
LDOFF
OUT3
VCC2
IN3
IN3
IN2
0.01F
24
23
22
21
20
19
18
IN2
17
VEE = -5.2V 0.01F
VEE1 VBB
25 26 27
VOLTAGE SOURCE (VBB) VOLTAGE SOURCE (VREF)
VREF
16 OUT2 15 IN1 14 IN1 13 IGND 12 OUT1 11 BIASADJ
D VIN 28 D 29 30 31 IP P DRIVADJ 32
MODULATION GENERATOR BIAS GENERATOR INPUT SIGNAL MONITOR
VCC1 P
200
10 9
VEE2 SBIAS
VEE = -5.2V
1
2
3
4
5
6
7
8
SDRIV
BIASB
BIASA
Q
VEE2
Q
Q
Q
IBIASDJ IDRVADJ
A IQB
VEE = -5.2V
A IQ
A IBIAS
VSHUT
LDOFF
OUT3
VCC2
IN3
IN3
IN2
0.01F
24
23
22
21
20
19
18
IN2
17
VEE = -5.2V 0.01F
VEE1 VBB
25 26 27
VOLTAGE SOURCE (VBB) VOLTAGE SOURCE (VREF)
VREF
16 OUT2 15 IN1 14 IN1 13 IGND 12 OUT1 11 BIASADJ 510 VEE2 SBIAS
D VIN 28 D 29 30 31 IP P DRIVADJ 510 32
MODULATION GENERATOR BIAS GENERATOR INPUT SIGNAL MONITOR
VCC1 P
200
10 9
VEE = -5.2V VBIAS
BIASB
Q
Q
SDRIV
BIASA
VEE2
Q
Q
VMOD
1
2
3
4
5
6
7
8
A
IQM A
IBM
A IQB
VEE = -5.2V
A IQ
A IBIAS
-8-
CXB1548Q-Y
Measurement Circuit (AC)
VSHUT
LDOFF
OUT3
VCC2
IN3
0.01F 24 VEE = -5.2V VEE1 0.01F VBB 26 27 D VIN D VCC1 P P DRIVADJ 29 30 31 32 28
23
22
21
20
19
IN2
18
17
25
VREF
16 OUT2 15 IN1 14 IN1 13 IGND 12 OUT1 11 BIASADJ VEE2 SBIAS -5.2V
VOLTAGE SOURCE (VBB)
IN3
VOLTAGE SOURCE (VREF)
INPUT SIGNAL MONITOR
200 IP
MODULATION GENERATOR
BIAS GENERATOR
IN2
10 9
VEE = -5.2V
1
2
3
4
5
6
7
8
SDRIV
BIASB
VEE2
51 IDRVADJ
51
VEE = -5.2V Digitizing oscilloscope Q Monitor Coaxial cable QB Monitor 50 50
-9-
BIASA
Q
Q
Q
Q
CXB1548Q-Y
Voltage Control Application
VSHUT
TTL Level Single Input L: Shut down Open High
LDOFF
OUT3
VCC2
IN3
IN3
IN2
0.01F VEE1 25 VEE = -5.2V 0.01F VBB 26 D 27 D 28 VCC1 29 P 200 P VEE = -5.2V IP 30 31
24
23
22
21
20
19
18
IN2
17
VOLTAGE SOURCE (VBB) VOLTAGE SOURCE (VREF)
VREF
16 OUT2 15 IN1 14 IN1 13 IGND
ECL Level Single Input VIN
IGND = VEE OP Amp Active
INPUT SIGNAL MONITOR
12 OUT1 BIASADJ 11 VBIASADJ
MODULATION GENERATOR
BIAS GENERATOR
10 9
510 VEE2 SBIAS VEE = -5.2V
VDRIVADJ
32 DRIVADJ 510 1 2 3 4 5 6 7 8
A
BIASA
SDRIV
BIASB
VEE2
Q
Q
Q
Q
IBIASMONITOR IQMONITOR IQ : IQMONITOR 11 : 1 VEE = -5.2V
A
IQ
5.1W
0.1H IBIAS
IBIAS : IBIASMONITOR 12 : 1
Laser Diode
Cautions for Handling 1. The outputs (Q, Q, BIASA, BIASB, SDRIV, SBIAS, P and P) on this IC are the open collector type. Therefore, when these pins are not bing used, connect them to Vcc. 2. When the inputs (DRIVEADJ and BIASADJ) are not bing used, connect them to VEE. 3. Do not apply voltage over VEE + 2.5V to DRIVADJ pin and BIASADJ pin. 4. In voltage control Application, do not apply voltage over the output voltage range to SDRIV pin and SBIAS pin. (see DC Characteristics of Laser Part and Voltage Control Application Circuit.) 5. Maximum drive current of VBB pin is 200A. 6. Maximum input differential voltage is 2.5V. ( | D- D | ) 7. Maximum drive current of VREF pin is 3mA. 8. As the electronic breakdown level is weak, take care to handle. - 10 -
CXB1548Q-Y
Example of Representative Characteristics
Modulation current vs. Modulation control current
100
Bias current vs. Bias control current
100
IQ - Modulation current [mA]
IBIAS - Bias current [mA]
0 2 4 6 8 10
80 60
80 60
40
40
20 0 IDRIVADJ - Modulation control current [mA] IQ : IDRIVADJ 9 : 1
20 0 0 2 4 6 8 10 IBIASADJ - Bias control current [mA] IBIAS : IBIASADJ 10 : 1
Modulation current vs. Modulation control voltage
100
Bias current vs. Bias control voltage
100
IQ - Modulation current [mA]
60
IBIAS - Bias current [mA]
0 0.5 1 1.5 2
80
80
60
40
40
20 0 VDRVADJ - Modulation control voltage [V] IQ 0.1 x ( Vmod - 0.8 ) [A]
20 0 0 0.5 1 1.5 2 VBIAS - Bias control voltage [V] IBIAS 0.11 x ( VBIAS - 0.8 ) [A]
- 11 -
CXB1548Q-Y
Package Outline
Unit: mm
32PIN QFP (CERAMIC)
14.73 0.3 24 17
4.92 MAX
0.15 0
.05
25
16
32
9
10.63 MAX
0.76
1 1.016
8
0.635 0.125
0.48 0.1 0 to 10
PACKAGE STRUCTURE
PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE QFP-32C-L01 XQFP023-G-0000-A LEAD TREATMENT LEAD MATERIAL PACKAGE WEIGHT CERAMIC TIN PLATING 42 ALLOY 0.3g
- 12 -
(0.825)

▲Up To Search▲

Price & Availability of CXB1548Q-Y

	To Download CXB1548Q-Y Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .