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SM8707 series Clock Generator with Dual PLLs
OVERVIEW
The SM8707 series are dual-PLL clock generator ICs, using a 27MHz master clock, that generate independent audio clock, video clock, and signal processor clock outputs needed in DVD player/recorder applications. Each PLL loop filter and crystal oscillator circuit are built-in and require no external components, resulting in highprecision clocks. The lineup includes devices that support both 44.1/48kHz audio sampling frequencies (fs), switchable using a control pin. The sampling frequency can be switched during operation without generating any output spike noise.
FEATURES
I I I PLL loop filter built-in Supply voltage: 3.0 to 3.6V I Crystal oscillator circuit built-in Low current consumption: 35mA typ. (VDD = 3.3V, all outputs with no load) I Sampling frequency fs: 44.1/48kHz 27MHz master clock I 16-pin VSOP package (Pb free) (internal PLL reference clock) Generated clocks (Refer to "Output Frequency Listing" on page 18 for details.)
I
I
SM8707D Video system output Audio system output Signal processor system output 27.0000MHz 512fs 768fs1 384fs1 16.9344MHz 33.8688MHz
SM8707E 27.0000MHz 512fs
SM8707F 27.0000MHz 768fs
SM8707G 27.0000MHz -
SM8707H 27.0000MHz 512fs 16.9344MHz 33.8688MHz 36.8640MHz
SM8707K - 768fs 18.4320MHz 24.5760MHz 33.8688MHz 36.8640MHz
SM8707L 27.0000MHz 768fs
33.8688MHz
16.9344MHz 33.8688MHz
33.8688MHz
24.5760MHz 33.8688MHz
1. 384fs (fs = 44.1kHz)/768fs (fs = 48kHz)
I
Low jitter output (1-sigma output load capacitance typical values)
SM8707D SM8707E 20ps 55ps SM8707F 20ps 40ps SM8707G 20ps 40ps SM8707H 20ps 70ps SM8707K - 60ps SM8707L 20ps 60ps
Video system output Audio and Signal processor system output
20ps 70ps
APPLICATIONS
I I
PACKAGE DIMENSIONS
(Unit: mm) Weight: 0.07g
DVD players/recorders DVD car navigation system
ORDERING INFORMATION
SM8707DV SM8707EV SM8707FV SM8707GV SM8707HV SM8707KV SM8707LV
0.65
4.4 0.2 6.4 0.2
Device
Package
0.10 0.05
16-pin VSOP
5.1 0.2
1.15 0.1
0.275typ
.05 0.15 - 0
+ 0.1
0 to 10
0.10
0.22 - 0.05
+ 0.1
0.12 M
0.5 0.2
NIPPON PRECISION CIRCUITS INC.--1
SM8707 series
PINOUT
(Top view)
D
E
SM8707 F G VDD1 VSS1
H
K
L 1 16
L
K
H
SM8707 G F NC2
E
D
SO2 SO4 SO3 NC1 SO2 SO2 SO2 FSEL FSEL FSEL NC2 FSEL FSEL FSEL SO1 SO3 SO2 SO3 SO1 SO1 SO1 VDD3 VSS3 AO2 AO1 AO1 SO2 AO2 AO2 AO2 8 9 AO1 SO2 SO1 SO1 AO1 AO1 AO1
MO1 MO1 MO1 MO1 MO1 NC1 MO1 MO2 MO2 NC1 NC1 MO2 SO1 MO2 VDD2 VSS2 XTI XTO
PIN DESCRIPTION
Name MOx AOx SOx FSEL XTI XTO VDD1 VSS1 VDD2 VSS2 VDD3 VSS3 NC1 NC2 I/O O O O I I O - - - - - - O I Video system output Audio system output Signal processor system output Sampling frequency select Crystal oscillator connection or external clock input Crystal oscillator connection Supply for digital block Ground for digital block Supply for analog block Ground for analog block Supply for digital block Ground for digital block No connection output (leave pin open circuit) No connection (leave pin open circuit or connect to VDD) Description
NIPPON PRECISION CIRCUITS INC.--2
SM8707 series
BLOCK DIAGRAM
FSEL (NC: SM8707G)
XTI XTO
Reference Divider 0 X'tal OSC
Phase Detector 0
Charge Pump 0
LPF 0
VCO 0
AO (NC: SM8707G)
Loop Divider 0 SO
Reference Divider 1
Phase Detector 1
Charge Pump 1
LPF 1
VCO 1
Control Logic
Loop Divider 1
MO (NC: SM8707K)
NIPPON PRECISION CIRCUITS INC.--3
SM8707 series Note: Unless otherwise noted, VDD applies to VDD1, VDD2, and VDD3. Similarly, VSS applies to VSS1, VSS2, and VSS3.
SPECIFICATIONS
Absolute Maximum Ratings
Parameter Supply voltage range Supply voltage deviation Input voltage range Output voltage range Power dissipation Storage temperature range Symbol VDD1 , VDD2 , VDD3 VDD1 - VDD2 , VDD1 - VDD3 , VDD2 - VDD3 VIN VOUT PD Tstg Condition Rating - 0.3 to + 6.5 0.1 - 0.3 to VDD + 0.3 - 0.3 to VDD + 0.3 165 - 55 to + 125 Unit V V V V mW C
Recommended Operating Conditions
VSS = VSS1 = VSS2 = VSS3 = 0V unless otherwise noted. Note 1: The supply voltage is defined relative to VSS = 0V. Note 2: The supply voltages applied on VDD1, VDD2, and VDD3 should be derived from a common supply source. Note 3: If the supply voltages on VDD1, VDD2, and VDD3 are from different sources, they should be applied simultaneously. The SM8707 may be damaged if the supply voltage timing is different. SM8707D
Rating Parameter Supply voltage ranges Output load capacitance 1 Output load capacitance 2 Master clock frequency Operating temperature range Symbol VDD1 , VDD2 , VDD3 CL1 CL2 fXTAL Topr Condition min (Note 1, 2, 3) MO1, MO2, SO1, SO2 outputs AO1, AO2 outputs When using crystal oscillator + 3.0 - - - - 40 typ - - - 27.0000 - max + 3.6 25 15 - + 85 V pF pF MHz C Unit
SM8707E
Rating Parameter Supply voltage ranges Output load capacitance 1 Output load capacitance 2 Output load capacitance 3 Master clock frequency Operating temperature range Symbol VDD1 , VDD2 , VDD3 CL1 CL2 CL3 fXTAL Topr Condition min (Note 1, 2, 3) MO1 output MO2 output SO1, SO2, AO1, AO2 outputs When using crystal oscillator + 3.0 - - - - - 10 typ - - - - 27.0000 - max + 3.6 40 25 15 - + 75 V pF pF pF MHz C Unit
NIPPON PRECISION CIRCUITS INC.--4
SM8707 series SM8707F
Rating Parameter Supply voltage ranges Output load capacitance 1 Output load capacitance 2 Master clock frequency Operating temperature range Symbol VDD1 , VDD2 , VDD3 CL1 CL2 fXTAL Topr Condition min (Note 1, 2, 3) MO1, SO1, SO2 outputs AO1, AO2 outputs When using crystal oscillator + 3.0 - - - - 40 typ - - - 27.0000 - max + 3.6 25 15 - + 85 V pF pF MHz C Unit
SM8707G
Rating Parameter Supply voltage ranges Output load capacitance 1 Output load capacitance 2 Output load capacitance 3 Master clock frequency Operating temperature range Symbol VDD1 , VDD2 , VDD3 CL1 CL2 CL3 fXTAL Topr Condition min (Note 1, 2, 3) MO1 output SO3 output SO1, SO2 outputs When using crystal oscillator + 3.0 - - - - - 10 typ - - - - 27.0000 - max + 3.6 40 25 15 - + 75 V pF pF pF MHz C Unit
SM8707H
Rating Parameter Supply voltage ranges Output load capacitance 1 Output load capacitance 2 Master clock frequency Operating temperature range Symbol VDD1 , VDD2 , VDD3 CL1 CL2 fXTAL Topr Condition min (Note 1, 2, 3) MO1, MO2, SO2, SO3 outputs AO1, SO1 outputs When using crystal oscillator + 3.0 - - - - 40 typ - - - 27.0000 - max + 3.6 25 15 - + 85 V pF pF MHz C Unit
SM8707K
Rating Parameter Supply voltage ranges Output load capacitance Master clock frequency Operating temperature range Symbol VDD1 , VDD2 , VDD3 CL fXTAL Topr Condition min (Note 1, 2, 3) Outputs When using crystal oscillator + 3.0 - - - 40 typ - - 27.0000 - max + 3.6 25 - + 85 V pF MHz C Unit
SM8707L
Rating Parameter Supply voltage ranges Output load capacitance Master clock frequency Operating temperature range Symbol VDD1 , VDD2 , VDD3 CL fXTAL Topr Condition min (Note 1, 2, 3) Outputs excluding XTO When using crystal oscillator + 3.0 - - - 40 typ - - 27.0000 - max + 3.6 15 - + 85 V pF MHz C Unit
NIPPON PRECISION CIRCUITS INC.--5
SM8707 series
DC Electrical Characteristics
I
SM8707D/F/H/K/L fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 40 to + 85 C unless otherwise noted. SM8707E/G fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 10 to + 75 C unless otherwise noted.
Rating Parameter Symbol Pins Condition min typ 35 20 - - - - - - - - max 45 mA - 0.8 VDD - - - 100 - - 40 VDD - 0.4 - 27 - V 0.2 VDD 1 - 40 - - V 0.4 A VDD = 3.3V, Ta = 25C, fs = 48kHz, Crystal oscillator connected, no load on all outputs VDD = 3.3V VIN = VDD VIN = 0V XTI All outputs excluding XTO VIN = VDD VIN = 0V IOH = - 2mA IOL = 2mA Excluding SM8707G SM8707G Unit
I
Current consumption
-
IDD
VDD
Input voltage
VIH VIL IIH1
FSEL, XTI
FSEL1
Input current
IIL1 IIH2 IIL2
Output voltage
VOH VOL
1. FSEL pin has Schmitt-trigger input and built-in pull-up resistor (SM8707G: NC pin).
NIPPON PRECISION CIRCUITS INC.--6
SM8707 series
AC Electrical Characteristics
SM8707D fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 40 to + 85 C unless otherwise noted.
Rating Parameter External input clock frequency1 Symbol Pins Condition min fXTI XTI MO1, MO2, SO1, SO2 tr AO1, AO2 MO1, MO2, SO1, SO2 tf AO1, AO2 MO1, MO2 Output clock jitter3 tjitter (1-sigma) SO1, SO2 AO1, AO2 Output clock duty cycle2 MO1, MO2, SO1, SO2 AO1, AO2 Settling time2 Power-up time2, 4 tS tP All outputs excluding XTO All outputs excluding XTO Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL = 15pF, VO = 0.5VDD Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL =15 pF, VO = 0.5VDD Applies to external clock input use only CL = 25 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 15pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 25pF, transition between VOH = 0.8VDD and VOL = 0.2VDD CL = 15pF, transition between VOH = 0.8VDD and VOL = 0.2VDD - - - - - - - - 45 45 - - typ 27.0000 2.0 2.0 2.0 2.0 20 70 70 50 50 - 1 max - - ns - - ns - - - - 55 % 55 1 5 s ms ps MHz Unit
Output clock rise time2
Output clock fall time2
Dt
1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. 2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. 3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. 4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches 0.1% of the specified frequency.
NIPPON PRECISION CIRCUITS INC.--7
SM8707 series SM8707E fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 10 to + 75 C unless otherwise noted.
Rating Parameter External input clock frequency1 Symbol Pins Condition min fXTI XTI MO1 Output clock rise time2 tr MO2 SO1, SO2, AO1, AO2 MO1 Output clock fall time2 tf MO2 SO1, SO2, AO1, AO2 MO1 Output clock jitter3 tjitter (1-sigma) MO2 SO1, SO2, AO1, AO2 MO1 Output clock duty cycle2 Dt MO2 SO1, SO2, AO1, AO2 Settling time2 Power-up time2, 4 tS tP AO1, AO2 All outputs excluding XTO Applies to external clock input use only CL = 40 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 25 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 15pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 40pF, transition between VOH = 0.8VDD and VOL = 0.2VDD CL = 25pF, transition between VOH = 0.8VDD and VOL = 0.2VDD CL = 15pF, transition between VOH = 0.8VDD and VOL = 0.2VDD Ta = 25C, CL = 40pF, VO = 0.5VDD Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL = 15pF, VO = 0.5VDD Ta = 25C, CL = 40pF, VO = 0.5VDD Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL =15 pF, VO = 0.5VDD - - - - - - - - - - 45 45 45 - - typ 27.0000 2.0 2.0 2.0 2.0 2.0 2.0 20 20 55 50 50 50 - 1 max - - - - - - - - - - 55 55 55 1 5 s ms % ps ns ns MHz Unit
1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. 2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. 3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. 4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches 0.1% of the specified frequency.
NIPPON PRECISION CIRCUITS INC.--8
SM8707 series SM8707F fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 40 to + 85 C unless otherwise noted.
Rating Parameter External input clock frequency1 Symbol Pins Condition min fXTI XTI MO1, SO1, SO2 tr AO1, AO2 MO1, SO1, SO2 tf AO1, AO2 MO1 Output clock jitter3 tjitter (1-sigma) SO1, SO2 AO1, AO2 Output clock duty cycle2 MO1, SO1, SO2 AO1, AO2 Settling time2 Power-up time2, 4 tS tP All outputs excluding XTO All outputs excluding XTO Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL = 15pF, VO = 0.5VDD Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL =15 pF, VO = 0.5VDD Applies to external clock input use only CL = 25 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 15pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 25pF, transition between VOH = 0.8VDD and VOL = 0.2VDD CL = 15pF, transition between VOH = 0.8VDD and VOL = 0.2VDD - - - - - - - - 45 45 - - typ 27.0000 2.0 2.0 2.0 2.0 20 40 40 50 50 - 1 max - - ns - - ns - - - - 55 % 55 1 5 s ms ps MHz Unit
Output clock rise time2
Output clock fall time2
Dt
1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. 2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. 3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. 4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches 0.1% of the specified frequency.
NIPPON PRECISION CIRCUITS INC.--9
SM8707 series SM8707G fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 10 to + 75 C unless otherwise noted.
Rating Parameter External input clock frequency1 Symbol Pins Condition min fXTI XTI MO1 Output clock rise time2 tr SO3 SO1, SO2 MO1 Output clock fall time2 tf SO3 SO1, SO2 MO1 Output clock jitter3 tjitter (1-sigma) SO3 SO1, SO2 MO1 Output clock duty cycle2 Dt SO3 SO1, SO2 Power-up time2, 4 tP All outputs excluding XTO Applies to external clock input use only CL = 40 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 25 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 15pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 40pF, transition between VOH = 0.8VDD and VOL = 0.2VDD CL = 25pF, transition between VOH = 0.8VDD and VOL = 0.2VDD CL = 15pF, transition between VOH = 0.8VDD and VOL = 0.2VDD Ta = 25C, CL = 40pF, VO = 0.5VDD Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL = 15pF, VO = 0.5VDD Ta = 25C, CL = 40pF, VO = 0.5VDD Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL =15 pF, VO = 0.5VDD - - - - - - - - - - 45 45 45 - typ 27.0000 2.0 2.0 2.0 2.0 2.0 2.0 20 40 40 50 50 50 1 max - - - - - - - - - - 55 55 55 5 ms % ps ns ns MHz Unit
1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. 2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. 3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. 4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches 0.1% of the specified frequency.
NIPPON PRECISION CIRCUITS INC.--10
SM8707 series SM8707H fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 40 to + 85 C unless otherwise noted.
Rating Parameter External input clock frequency1 Symbol Pins Condition min fXTI XTI MO1, MO2, SO2, SO3 tr SO1, AO1 MO1, MO2, SO2, SO3 tf SO1, AO1 MO1, MO2 Output clock jitter3 tjitter (1-sigma) SO2, SO3 SO1, AO1 Output clock duty cycle2 MO1, MO2, SO2, SO3 SO1, AO1 Settling time2 Power-up time2, 4 tS tP All outputs excluding XTO All outputs excluding XTO Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL = 15pF, VO = 0.5VDD Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL =15 pF, VO = 0.5VDD Applies to external clock input use only CL = 25 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 15pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 25pF, transition between VOH = 0.8VDD and VOL = 0.2VDD CL = 15pF, transition between VOH = 0.8VDD and VOL = 0.2VDD - - - - - - - - 45 45 - - typ 27.0000 2.0 2.0 2.0 2.0 20 70 70 50 50 - 1 max - - ns - - ns - - - - 55 % 55 1 5 s ms ps MHz Unit
Output clock rise time2
Output clock fall time2
Dt
1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. 2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. 3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. 4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches 0.1% of the specified frequency.
NIPPON PRECISION CIRCUITS INC.--11
SM8707 series SM8707K fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 40 to + 85 C unless otherwise noted.
Rating Parameter External input clock frequency1 Frequency deviation1 Symbol Pins Condition min fXTI XTI SO1, SO2, SO3, SO4, AO1 SO1, SO2, SO3, SO4, AO1 SO1, SO2, SO3, SO4, AO1 SO1, SO2, SO3, SO4, AO1 SO1, SO2, SO3, SO4, AO1 All outputs excluding XTO All outputs excluding XTO Applies to external clock input use only Applies to external clock input use only, When frequency deviation of master clock is 0ppm CL = 25 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 25pF, transition between VOH = 0.8VDD and VOL = 0.2VDD Ta = 25C, CL = 25pF, VO = 0.5VDD Ta = 25C, CL = 25pF, VO = 0.5VDD - typ 27.0000 max - MHz Unit
Df
-15
-
+15
ppm
Output clock rise time2 Output clock fall time2 Output clock jitter3 Output clock duty cycle2 Settling time2 Power-up time2, 4
tr tf tjitter (1-sigma) Dt tS tP
- - - 45 - -
2.0 2.0 60 50 - 1
- - - 55 1 5
ns ns ps % s ms
1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. 2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. 3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. 4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches 0.1% of the specified frequency.
NIPPON PRECISION CIRCUITS INC.--12
SM8707 series SM8707L fXTAL = 27.0000MHz, VDD = 3.3V 0.3V, VSS = 0V, Ta = - 40 to + 85 C unless otherwise noted.
Rating Parameter External input clock frequency1 Output clock rise time2 Output clock fall time2 Symbol Pins Condition min fXTI tr tf tjitter (1-sigma) XTI MO1, MO2, SO1, SO2, AO1, AO2 MO1, MO2, SO1, SO2, AO1, AO2 MO1, MO2 Output clock jitter3 SO1, SO2, AO1, AO2 MO1, MO2, SO1, SO2, AO1, AO2 All outputs excluding XTO All outputs excluding XTO Ta = 25C, CL = 15pF, VO = 0.5VDD Applies to external clock input use only CL = 15 pF, transition between VOL = 0.2VDD and VOH = 0.8VDD CL = 15pF, transition between VOH = 0.8VDD and VOL = 0.2VDD - - - - - 45 - - typ 27.0000 2.0 2.0 20 60 50 - 1 max - - - - - 55 1 5 MHz ns ns ps ps % s ms Unit
Output clock duty cycle2 Settling time2 Power-up time2, 4
Dt tS tP
Ta = 25C, CL = 15pF, VO = 0.5VDD
1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur. 2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board. 3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board. 4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches 0.1% of the specified frequency.
27MHz 27MHz
DUT
Active Probe (HP1152A)
Oscilloscope (Infinium HP54845A) DUT Frequency & Time Interval Analyzer (HP5371A) Active Probe (HP54701A)
DUT:Device under test Passive Probe (HP10435A)
Oscilloscope (HP54720D +HP54721A)
Jitter Measurement System (ASA, M1)
DUT:Device under test
Figure 1. Measurement circuit 1
Figure 2. Measurement circuit 2
NIPPON PRECISION CIRCUITS INC.--13
SM8707 series
FUNCTIONAL DESCRIPTION
27MHz Master Clock
The SM8707 series 27MHz master clock circuit is configured, as shown in Figure 3 and 4, with the crystal oscillator element connected between XTI (pin 7) and XTO (pin 8). Alternatively, the 27MHz master clock can be supplied from an external master clock input on XTI, as shown in Figure 5 and 6. If an external input clock on XTI is used, it is recommended that the frequency be 27.0000MHz, with 50% duty, and 3.3V voltage amplitude level. Furthermore, when using an external clock input, the input signal voltage should not exceed the absolute maximum rating, otherwise damage may occur.
C1
XTI (Pin 7)
C1
XTI (Pin 7)
Oscillator
C2 C1, C2 = 5 to 33pF XTO (Pin 8)
Internal Circuits C2 C1, C2 = 5 to 33pF MO XTO (Pin 8)
Oscillator
Internal Circuits
Figure 3. Crystal oscillator connection (excluding SM8707K)
Figure 4. Crystal oscillator connection (SM8707K)
External Clock
XTI (Pin 7)
External Clock Internal Circuits Open
XTI (Pin 7)
Oscillator
Open XTO (Pin 8)
Oscillator
XTO (Pin 8)
Internal Circuits
MO
Figure 5. External clock input (excluding SM8707K)
Figure 6. External clock input (SM8707K)
NIPPON PRECISION CIRCUITS INC.--14
SM8707 series
Sampling Frequency and Output Clock Frequency
SM8707D The SM8707D sampling frequency fs can be switched between 44.1kHz when FSEL (pin 14) is HIGH, and 48kHz when FSEL is LOW. The audio output (AO1) is a 384fs frequency clock when FSEL is HIGH (fs = 44.1kHz), and 768fs frequency clock when FSEL is LOW (fs = 48kHz) where fs is determined by the setting on FSEL. The audio output (AO2) is a 512fs frequency clock. In addition, the signal processor output (SO1 and SO2) is a 16.9344MHz, 33.8688MHz frequency clock derived from the master clock. And the video output (MO1 and MO2) is a 27MHz frequency clock, identical to the master clock. The SM8707D possible output clock frequencies are shown in Table 1.
Table 1. Sampling frequency and output clock frequency (27.0000MHz master clock frequency)
FSEL (Pin 14) Sampling frequency fs [kHz] 44.1 Output clock frequency [MHz] AO1 (Pin 9) 16.9344 (384fs) 36.8640 (768fs) AO2 (Pin 10) 22.5792 (512fs) 24.5760 (512fs) SO1 (Pin 13) 16.9344 SO2 (Pin 15) 33.8688 MO1 (Pin 3) 27.0000 MO2 (Pin 4) 27.0000
HIGH
LOW
48
16.9344
33.8688
27.0000
27.0000
SM8707E The SM8707E sampling frequency fs can be switched between 44.1kHz when FSEL (pin 14) is LOW, and 48kHz when FSEL is HIGH. The audio output (AO1 and AO2) is a 512fs frequency clock, where fs is determined by the setting on FSEL. In addition, the signal processor output (SO1 and SO2) is a 33.8688MHz frequency clock derived from the master clock. And the video output (MO1 and MO2) is a 27MHz frequency clock, identical to the master clock. The SM8707E possible output clock frequencies are shown in Table 2.
Table 2. Sampling frequency and output clock frequency (27.0000MHz master clock frequency)
FSEL (Pin 14) Sampling frequency fs [kHz] 48 Output clock frequency [MHz] AO1 (Pin 9) 24.5760 (512fs) 22.5792 (512fs) AO2 (Pin 10) 24.5760 (512fs) 22.5792 (512fs) SO1 (Pin 13) 33.8688 SO2 (Pin 15) 33.8688 MO1 (Pin 3) 27.0000 MO2 (Pin 4) 27.0000
HIGH
LOW
44.1
33.8688
33.8688
27.0000
27.0000
NIPPON PRECISION CIRCUITS INC.--15
SM8707 series SM8707F The SM8707F sampling frequency fs can be switched between 44.1kHz when FSEL (pin 14) is HIGH, and 48kHz when FSEL is LOW. The audio outputs (AO1 and AO2) are equivalent to 768fs, where fs is determined by the setting on FSEL. In addition, the signal processor outputs (SO1 and SO2) are 16.9344MHz and 33.8688MHz clocks, respectively, derived from the master clock. The video output (MO1) is a 27MHz clock, identical to the master clock. The SM8707F supported clock frequencies are shown in Table 3.
Table 3. Sampling frequency and output clock frequency (27.0000MHz master clock frequency)
FSEL (Pin 14) Sampling frequency fs [kHz] 44.1 Output clock frequency [MHz] AO1 (Pin 9) 33.8688 (768fs) 36.8640 (768fs) AO2 (Pin 10) 33.8688 (768fs) 36.8640 (768fs) SO1 (Pin 13) 16.9344 SO2 (Pin 15) 33.8688 MO1 (Pin 3) 27.0000
HIGH
LOW
48
16.9344
33.8688
27.0000
SM8707G The SM8707G signal processor outputs (SO1, SO2 and SO3) are all 33.8688MHz clocks, derived from the master clock. The video output (MO1) is a 27MHz clock, identical to the master clock. The SM8707G supported clock frequencies are shown in Table 4.
Table 4. Sampling frequency and output clock frequency (27.0000MHz master clock frequency)
Output clock frequency [MHz] SO1 (Pin 9) 33.8688 SO2 (Pin 10) 33.8688 SO3 (Pin 13) 33.8688 MO1 (Pin 3) 27.0000
SM8707H The SM8707H sampling frequency fs can be switched between 44.1kHz when FSEL (pin 14) is HIGH, and 48kHz when FSEL is LOW. The audio output (AO1) is equivalent to 512fs, where fs is determined by the setting on FSEL. In addition, the signal processor outputs (SO1, SO2 and SO3) are 36.8640MHz, 16.9344MHz and 33.8688MHz clocks, respectively, derived from the master clock. The video outputs (MO1 and MO2) are 27MHz clocks, identical to the master clock. The SM8707H supported clock frequencies are shown in Table 5.
Table 5. Sampling frequency and output clock frequency (27.0000MHz master clock frequency)
FSEL (Pin 14) Sampling frequency fs [kHz] 44.1 Output clock frequency [MHz] AO1 (Pin 10) 22.5792 (512fs) 24.5760 (512fs) SO1 (Pin 9) 36.8640 SO2 (Pin 13) 16.9344 SO3 (Pin 15) 33.8688 MO1 (Pin 3) 27.0000 MO2 (Pin 4) 27.0000
HIGH
LOW
48
36.8640
16.9344
33.8688
27.0000
27.0000
NIPPON PRECISION CIRCUITS INC.--16
SM8707 series SM8707K The SM8707K sampling frequency fs can be switched between 44.1kHz when FSEL (pin 14) is HIGH, and 48kHz when FSEL is LOW. The audio output (AO1) is equivalent to 768fs, where fs is determined by the setting on FSEL. In addition, the signal processor output (SO1, SO2, SO3 and SO4) is 24.5760MHz, 18.4320MHz, 36.8640MHz and 33.8688MHz clocks, respectively, derived from the master clock. Also, the audio output AO1 36.8688MHz clock is synchronized with the signal processor output SO4 clock, and audio output AO1 36.8640MHz clock is synchronized with the signal processor output SO3 clock. The SM8707K supported clock frequencies are shown in Table 6.
Table 6. Sampling frequency and output clock frequency (27.0000MHz master clock frequency)
FSEL (Pin 14) Sampling frequency fs [kHz] 44.1 Output clock frequency [MHz] AO1 (Pin 10) 33.8688 (768fs) 36.8640 (768fs) SO1 (Pin 4) 24.5760 SO2 (Pin 9) 18.4320 SO3 (Pin 13) 36.8640 SO4 (Pin 15) 33.8688
HIGH
LOW
48
24.5760
18.4320
36.8640
33.8688
SM8707L The SM8707L sampling frequency fs can be switched between 44.1kHz when FSEL (pin 14) is LOW, and 48kHz when FSEL is HIGH. The audio output (AO1 and AO2) is a 768fs frequency clock, where fs is determined by the setting on FSEL. In addition, the signal processor output (SO1 and SO2) is 24.5760MHz and 33.8688MHz frequency clock derived from the master clock. And the video output (MO1 and MO2) is a 27MHz frequency clock, identical to the master clock. The SM8707L supported clock frequencies are shown in Table 7.
Table 7. Sampling frequency and output clock frequency (27.0000MHz master clock frequency)
FSEL (Pin 14) Sampling frequency fs [kHz] 44.1 Output clock frequency [MHz] AO1 (Pin 9) 33.8688 (768fs) 36.8640 (768fs) AO2 (Pin 10) 33.8688 (768fs) 36.8640 (768fs) SO1 (Pin 13) 24.5760 SO2 (Pin 15) 33.8688 MO1 (Pin 3) 27.0000 MO2 (Pin 4) 27.0000
HIGH
LOW
48
24.5760
33.8688
27.0000
27.0000
NIPPON PRECISION CIRCUITS INC.--17
SM8707 series
Spike Noise Prevention Function
All device versions, excluding the SM8707G which has no FSEL input, have a spike noise prevention circuit that prevents any spike noise generation in the audio output clocks when the sampling frequency is switched using FSEL. The state of the AOx output before and after FSEL is switched is shown in Figure 7. When FSEL is switched, either from LOW to HIGH or HIGH to LOW, the spike noise prevention circuit stops the AOx clock output by a maximum of 1s, and then the output clock changes to reflect the current FSEL setting.
fs = 44.1kHz (SM8707E: fs = 48kHz)
fs = 48kHz (SM8707E: fs = 44.1kHz)
FSEL
AO
1s (max)
Figure 7. Spike noise prevention circuit timing at sampling frequency switching
Sampling Frequency Switching Settling Time
The clock output response when the sampling frequency is switched using FSEL is shown in Figure 8. Note that all device versions, excluding the SM8707G which has no FSEL input, have a spike noise prevention circuit which stops the output AOx clocks for a fixed interval, which means the settling time is a maximum 1s when the sampling frequency is switched.
0.8VDD
FSEL
0.2VDD
tS
AO
fs = 48kHz (SM8707E: fs = 44.1kHz) fs = 44.1kHz (SM8707E: fs = 48kHz)
tS
fs = 48kHz (SM8707E: fs = 44.1kHz)
MO
27.0000MHz
SO
16.9344/33.8688MHz (SM8707D/F) 33.8688MHz (SM8707E)
16.9344/33.8688/36.8640MHz (SM8707H) 18.4320/24.5760/33.8688/36.8640MHz (SM8707K) 24.5760/33.8688MHz (SM8707L)
Figure 8. Output signal switching timing
NIPPON PRECISION CIRCUITS INC.--18
SM8707 series
SM8707 series OUTPUT FREQUENCY LISTING
FSEL polarity (Pin 14) Sampling frequency fs [kHz] 44.1 Output clock frequency [MHz] Pin 3 27.0000 Pin 4 27.0000 Pin 9 16.9344 (384fs) 36.8640 (768fs) 15 AO1 24.5760 (512fs) 22.5792 (512fs) 15 AO1 33.8688 (768fs) 36.8640 (768fs) - NC1 - - NC1 27.0000 15 AO1 33.8688 15 SO1 36.8640 Pin 10 22.5792 (512fs) 24.5760 (512fs) 15 AO2 24.5760 (512fs) 22.5792 (512fs) 15 AO2 33.8688 (768fs) 36.8640 (768fs) 15 AO2 33.8688 15 SO2 22.5792 (512fs) 24.5760 (512fs) 15 AO1 33.8688 (768fs) 36.8640 (768fs) 25 AO1 33.8688 (768fs) 36.8640 (768fs) 15 AO2 Pin 13 16.9344 Pin 15 33.8688
Version
H
SM8707D
L
48.0
27.0000 25 MO1
27.0000 25 MO2 27.0000
16.9344 25 SO1 33.8688
33.8688 25 SO2 33.8688
Output load capacitance [pF] Pin name H 48.0
27.0000
SM8707E
L
44.1
27.0000 40 MO1
27.0000 25 MO2
33.8688 15 SO1 16.9344
33.8688 15 SO2 33.8688
Output load capacitance [pF] Pin name H 44.1
27.0000 -
SM8707F
L
48.0
27.0000 25 MO1
16.9344 25 SO1 33.8688 25 SO3 16.9344
33.8688 25 SO2 - - NC1 33.8688
Output load capacitance [pF] Pin name - SM8707G -
27.0000 40 MO1
Output load capacitance [pF] Pin name H 44.1
27.0000
SM8707H
L
48.0
27.0000 25 MO1
27.0000 25 MO2 24.5760
36.8640 15 SO1 18.4320
16.9344 25 SO2 36.8640
33.8688 25 SO3 33.8688
Output load capacitance [pF] Pin name H 44.1
- SM8707K L 48.0 - NC1 44.1 27.0000 24.5760 25 SO1 27.0000 18.4320 25 SO2 33.8688 (768fs) 36.8640 (768fs) 15 AO1
36.8640 25 SO3 24.5760
33.8688 25 SO4 33.8688
Output load capacitance [pF] Pin name H
SM8707L
L
48.0
27.0000 15 MO1
27.0000 15 MO2
24.5760 15 SO1
33.8688 15 SO2
Output load capacitance [pF] Pin name
NIPPON PRECISION CIRCUITS INC.--19
SM8707 series
Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter "Products") are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from NIPPON PRECISION CIRCUITS INC. (hereinafter "NPC"). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome, Koto-ku, Tokyo 135-8430, Japan Telephone: +81-3-3642-6661 Facsimile: +81-3-3642-6698 http://www.npc.co.jp/ Email: sales@npc.co.jp
NC0107CE 2003.12
NIPPON PRECISION CIRCUITS INC.--20

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