Document
SM8707E/F
Clock Generator with Dual PLLs
OVERVIEW
The 8707E/F 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 high-precision 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
■ Supply voltage: 3.0 to 3.6V ■ Low current consumption: 35mA typ.
(VDD=3.3V, all outputs with no load) ■ 27MHz master clock
(internal PLL reference clock) ■ Generated clocks
Video system output Audio system output
Signal processor system output
SM8707E 27.0000MHz
512fs
33.8688MHz
■ PLL loop filter built-in ■ Crystal oscillator circuit built-in ■ Sampling frequency fs: 44.1/48kHz ■ 16-pin VSOP package (Pb free)
SM8707F 27.0000MHz
768fs 16.9344MHz 33.8688MHz
■ Low jitter output (1-sigma output load capacitance typical values)
Video system output Audio and Signal processor system output
SM8707E 20ps
55ps
SM8707F 20ps
40ps
APPLICATIONS
■ DVD players/recorders ■ DVD car navigation system
PACKAGE DIMENSIONS
(Unit : mm) Weight: 0.07g
ORDERING INFOMATION
Device
Package
SM8707EV SM8707FV
16pin VSOP
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PINOUT
(Top view)
SM8707E/F
VDD1 VSS1
MO1 MO2(E ver.)
NC(F ver.) VDD2 VSS2 XTI XTO
1 8
16 NC SO2 FSEL SO1 VDD3 VSS3 AO2
9 AO1
PIN DESCRIPTION
No. Name 1 VDD1 2 VSS1 3 MO1
MO2(E ver.) 4
NC(F ver.) 5 VDD2 6 VSS2 7 XTI 8 XTO 9 AO1 10 AO2 11 VSS3 12 VDD3 13 SO1 14 FSEL 15 SO2 16 NC
I/O Description - Supply for digital block - Ground for digital block O Video system output O Video system output - Non connection output (leave pin open circuit) - Supply for analog block - Ground for analog block I Crystal oscillator connection or external clock input O Crystal oscillator connection O Audio system output O Audio system output - Ground for digital block - Supply for digital block O Signal processor system output I Sampling frequency select O Signal processor system output - Non connection (leave pin open circuit or connect to VDD)
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BLOCK DIAGRAM
SM8707E/F
FSEL
XTI XTO
Reference Divider 0
Phase Detector 0
Charge Pump 0
LPF 0
VCO 0
X′tal OSC
Loop Divider 0
Reference Divider 1
Phase Detector 1
Charge Pump 1
LPF 1
VCO 1
Control Logic
Loop Divider 1
AO1
AO2
SO1
SO2
MO1 MO2(E ver.) NC (F ver.)
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SM8707E/F
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
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. SM8707E
Parameter
Symbol
Condition
Supply voltage ranges Output load capacitance 1 Output load capacitance 2 Output load capacitance 3 Master clock frequency Operating temperature range
VDD1,VDD2,VDD3 CL1 CL2 CL3 fXTAL TOPR
(Note 1,2,3) MO1 output MO2 output SO1,SO2,AO1,AO2 outputs When using crystal oscillator
MIN +3.0
-10
Rating
TYP -
27.0000 -
MAX +3.6 40 25 15
+75
Unit
V pF pF pF MHz ℃
SM8707F
Parameter
Symbol
Condition
MIN
Rating TYP
MAX
Unit
Supply voltage ranges
VDD1,VDD2,VDD3 (Note 1,2,3)
+3.0 - +3.6 V
Output load capacitance 1
CL1 MO1,SO1,SO2 outputs
- - 25 pF
Output load capacitance 2
CL2 AO1,AO2 outputs
- - 15 pF
Master clock frequency
fXTAL
When using crystal oscillator
- 27.0000 -
MHz
Operating temperature range
TOPR
-40 - +85 ℃
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.
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SM8707E/F
DC Electrical Characteristics ■ SM8707E
fXTAL=27.0000MHz, VDD=3.3V ± 0.3V, VSS=0V, Ta=-10 to +75C unless otherwise noted. ■ SM8707F
fXTAL=27.0000MHz, VDD=3.3V ± 0.3V, VSS=0V, Ta=-40 to +85C unless otherwise noted.
Parameter Symbol
Pins
Condition
MIN
Rating TYP
Current consumption
IDD VDD
VDD=3.3V,Ta=25℃,fs=48kHz, Crystal oscillator connected, no load on all outputs
-
35
Input voltage
VIH FSEL,XTI VIL
VDD=3.3V
Input current
IIH1 FSEL*1 IIL1 IIH2 XTI IIL2
VIN=VDD VIN=0V VIN=VDD VIN=0V
Output voltage VOH All outputs
IOH=-2mA
VOL excluding XTO IOL=2mA
0.8VDD -
-100 -
-40 VDD-0.4
-
-
*1. FSEL.