NPC SM8707GV

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
■
■
■
■
■ PLL loop filter built-in
Supply voltage: 3.0 to 3.6V
■ Crystal oscillator circuit built-in
Low current consumption: 35mA typ.
(VDD = 3.3V, all outputs with no load)
■ Sampling frequency fs: 44.1/48kHz
27MHz master clock
■ 16-pin VSOP package (Pb free)
(internal PLL reference clock)
Generated clocks (Refer to “Output Frequency Listing” on page 18 for details.)
SM8707D
SM8707E
SM8707F
SM8707G
SM8707H
SM8707K
SM8707L
Video system
output
27.0000MHz
27.0000MHz
27.0000MHz
27.0000MHz
27.0000MHz
−
27.0000MHz
Audio system
output
512fs
768fs1
384fs1
512fs
768fs
−
512fs
768fs
768fs
Signal processor
system output
16.9344MHz
33.8688MHz
33.8688MHz
16.9344MHz
33.8688MHz
33.8688MHz
16.9344MHz
33.8688MHz
36.8640MHz
18.4320MHz
24.5760MHz
33.8688MHz
36.8640MHz
24.5760MHz
33.8688MHz
1. 384fs (fs = 44.1kHz)/768fs (fs = 48kHz)
■
Low jitter output (1-sigma output load capacitance typical values)
Video system
output
Audio and Signal
processor
system output
SM8707D
SM8707E
SM8707F
SM8707G
SM8707H
SM8707K
SM8707L
20ps
20ps
20ps
20ps
20ps
−
20ps
70ps
55ps
40ps
40ps
70ps
60ps
60ps
APPLICATIONS
■
■
PACKAGE DIMENSIONS
(Unit: mm)
Weight: 0.07g
DVD players/recorders
DVD car navigation system
ORDERING INFORMATION
Package
4.4 0.2
6.4 0.2
Device
SM8707DV
SM8707EV
+ 0.1
16-pin VSOP
1.15 0.1
SM8707GV
.05
0.15 - 0
0.275typ
5.1 0.2
SM8707HV
SM8707KV
SM8707LV
0.65
0.10 0.05
SM8707FV
0 to 10
0.10
+ 0.1
0.22 − 0.05
0.12 M
0.5 0.2
NIPPON PRECISION CIRCUITS INC.—1
SM8707 series
PINOUT
(Top view)
D
SM8707
F
G
E
H
K
L
L
VDD1
1
K
H
SM8707
G
F
E
D
NC2
16
VSS1
SO2 SO4 SO3 NC1 SO2 SO2 SO2
MO1 MO1 MO1 MO1 MO1 NC1 MO1
FSEL FSEL FSEL NC2 FSEL FSEL FSEL
MO2 MO2 NC1 NC1 MO2 SO1 MO2
SO1 SO3 SO2 SO3 SO1 SO1 SO1
VDD2
VDD3
VSS2
VSS3
AO2 AO1 AO1 SO2 AO2 AO2 AO2
XTI
XTO
9
8
AO1 SO2 SO1 SO1 AO1 AO1 AO1
PIN DESCRIPTION
Name
I/O
Description
MO×
O
Video system output
AO×
O
Audio system output
SO×
O
Signal processor system output
FSEL
I
Sampling frequency select
XTI
I
Crystal oscillator connection or external clock input
XTO
O
Crystal oscillator connection
VDD1
–
Supply for digital block
VSS1
–
Ground for digital block
VDD2
–
Supply for analog block
VSS2
–
Ground for analog block
VDD3
–
Supply for digital block
VSS3
–
Ground for digital block
NC1
O
No connection output (leave pin open circuit)
NC2
I
No connection (leave pin open circuit or connect to VDD)
NIPPON PRECISION CIRCUITS INC.—2
SM8707 series
BLOCK DIAGRAM
FSEL (NC: SM8707G)
XTI
XTO
Reference
Divider 0
Phase
Detector 0
Charge
Pump 0
LPF 0
AO (NC: SM8707G)
VCO 0
X'tal
OSC
Loop
Divider 0
Reference
Divider 1
Phase
Detector 1
Loop
Divider 1
Charge
Pump 1
LPF 1
VCO 1
Control
Logic
SO
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
Rating
Unit
VDD1 , VDD2 , VDD3
− 0.3 to + 6.5
V
VDD1 – VDD2 ,
VDD1 – VDD3 ,
VDD2 – VDD3
± 0.1
V
VIN
− 0.3 to VDD + 0.3
V
VOUT
− 0.3 to VDD + 0.3
V
Power dissipation
PD
165
mW
Storage temperature range
Tstg
− 55 to + 125
°C
Supply voltage range
Supply voltage deviation
Input voltage range
Output voltage range
Symbol
Condition
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
Symbol
VDD1 , VDD2 , VDD3
Condition
(Note 1, 2, 3)
Unit
min
typ
max
+ 3.0
–
+ 3.6
V
Output load capacitance 1
CL1
MO1, MO2, 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
°C
SM8707E
Rating
Parameter
Supply voltage ranges
Symbol
Condition
Unit
min
typ
max
VDD1 , VDD2 , VDD3
(Note 1, 2, 3)
+ 3.0
–
+ 3.6
V
Output load capacitance 1
CL1
MO1 output
–
–
40
pF
Output load capacitance 2
CL2
MO2 output
–
–
25
pF
Output load capacitance 3
CL3
SO1, SO2, AO1, AO2 outputs
–
–
15
pF
Master clock frequency
fXTAL
When using crystal oscillator
–
27.0000
–
MHz
Operating temperature range
Topr
– 10
–
+ 75
°C
NIPPON PRECISION CIRCUITS INC.—4
SM8707 series
SM8707F
Rating
Parameter
Supply voltage ranges
Symbol
VDD1 , VDD2 , VDD3
Condition
(Note 1, 2, 3)
Unit
min
typ
max
+ 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
°C
SM8707G
Rating
Parameter
Supply voltage ranges
Symbol
Condition
Unit
min
typ
max
VDD1 , VDD2 , VDD3
(Note 1, 2, 3)
+ 3.0
–
+ 3.6
V
Output load capacitance 1
CL1
MO1 output
–
–
40
pF
Output load capacitance 2
CL2
SO3 output
–
–
25
pF
Output load capacitance 3
CL3
SO1, SO2 outputs
–
–
15
pF
Master clock frequency
fXTAL
When using crystal oscillator
–
27.0000
–
MHz
Operating temperature range
Topr
– 10
–
+ 75
°C
SM8707H
Rating
Parameter
Supply voltage ranges
Output load capacitance 1
Symbol
VDD1 , VDD2 , VDD3
Condition
(Note 1, 2, 3)
CL1
MO1, MO2, SO2, SO3 outputs
Unit
min
typ
max
+ 3.0
–
+ 3.6
V
–
–
25
pF
Output load capacitance 2
CL2
AO1, SO1 outputs
–
–
15
pF
Master clock frequency
fXTAL
When using crystal oscillator
–
27.0000
–
MHz
Operating temperature range
Topr
– 40
–
+ 85
°C
SM8707K
Rating
Parameter
Supply voltage ranges
Symbol
VDD1 , VDD2 , VDD3
Output load capacitance
CL
Master clock frequency
fXTAL
Operating temperature range
Topr
Condition
Unit
min
typ
max
+ 3.0
–
+ 3.6
V
Outputs
–
–
25
pF
When using crystal oscillator
–
27.0000
–
MHz
– 40
–
+ 85
°C
(Note 1, 2, 3)
SM8707L
Rating
Parameter
Supply voltage ranges
Symbol
VDD1 , VDD2 , VDD3
Output load capacitance
CL
Master clock frequency
fXTAL
Operating temperature range
Topr
Condition
(Note 1, 2, 3)
Unit
min
typ
max
+ 3.0
–
+ 3.6
V
Outputs excluding XTO
–
–
15
pF
When using crystal oscillator
–
27.0000
–
MHz
– 40
–
+ 85
°C
NIPPON PRECISION CIRCUITS INC.—5
SM8707 series
DC Electrical Characteristics
■
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
Current
consumption
Input voltage
Symbol
Pins
typ
max
Excluding
SM8707G
–
35
45
SM8707G
–
20
27
0.8 VDD
–
–
–
–
0.2 VDD
VIN = VDD
–
–
1
IIL1
VIN = 0V
– 100
–
−
IIH2
VIN = VDD
–
–
40
VIN = 0V
– 40
–
−
VDD − 0.4
–
–
–
–
0.4
IDD
VIH
IIH1
VDD
FSEL, XTI
FSEL1
XTI
IIL2
Output voltage
Unit
min
VIL
Input current
Condition
VOH
VOL
All outputs
excluding XTO
VDD = 3.3V, Ta = 25°C,
fs = 48kHz, Crystal
oscillator connected,
no load on all outputs
VDD = 3.3V
IOH = − 2mA
IOL = 2mA
mA
V
µA
V
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
Output clock rise time2
Output clock fall time2
Symbol
fXTI
Pins
Condition
Output clock duty cycle2
–
27.0000
–
MO1, MO2,
SO1, SO2
CL = 25 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
AO1, AO2
CL = 15pF, transition between
VOL = 0.2VDD and VOH = 0.8VDD
–
2.0
–
MO1, MO2,
SO1, SO2
CL = 25pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
AO1, AO2
CL = 15pF, transition between
VOH = 0.8VDD and VOL = 0.2VDD
–
2.0
–
–
20
–
–
70
–
tf
Dt
max
Applies to external clock input use only
tr
tjitter
(1-sigma)
typ
XTI
MO1, MO2
Output clock jitter3
Unit
min
SO1, SO2
Ta = 25°C, CL = 25pF, VO = 0.5VDD
MHz
ns
ns
AO1, AO2
Ta = 25°C, CL = 15pF, VO = 0.5VDD
–
70
–
MO1, MO2,
SO1, SO2
Ta = 25°C, CL = 25pF, VO = 0.5VDD
45
50
55
AO1, AO2
Ta = 25°C, CL =15 pF, VO = 0.5VDD
45
50
55
ps
%
Settling time2
tS
All outputs
excluding XTO
–
–
1
µs
Power-up time2, 4
tP
All outputs
excluding XTO
–
1
5
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.—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
Output clock rise time2
Output clock fall time2
Output clock jitter3
Output clock duty cycle2
Symbol
fXTI
tr
tf
tjitter
(1-sigma)
Dt
Pins
Condition
Unit
min
typ
max
XTI
Applies to external clock input use only
–
27.0000
–
MO1
CL = 40 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
MO2
CL = 25 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
SO1, SO2,
AO1, AO2
CL = 15pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
MO1
CL = 40pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
MO2
CL = 25pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
SO1, SO2,
AO1, AO2
CL = 15pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
MO1
Ta = 25°C, CL = 40pF, VO = 0.5VDD
–
20
–
MO2
Ta = 25°C, CL = 25pF, VO = 0.5VDD
–
20
–
SO1, SO2,
AO1, AO2
Ta = 25°C, CL = 15pF, VO = 0.5VDD
–
55
–
MO1
Ta = 25°C, CL = 40pF, VO = 0.5VDD
45
50
55
MO2
Ta = 25°C, CL = 25pF, VO = 0.5VDD
45
50
55
SO1, SO2,
AO1, AO2
Ta = 25°C, CL =15 pF, VO = 0.5VDD
45
50
55
MHz
ns
ns
ps
%
Settling time2
tS
AO1, AO2
–
–
1
µs
Power-up time2, 4
tP
All outputs
excluding XTO
–
1
5
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.—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
Output clock rise time2
Output clock fall time2
Symbol
fXTI
Pins
Condition
Output clock duty cycle2
–
27.0000
–
MO1, SO1,
SO2
CL = 25 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
AO1, AO2
CL = 15pF, transition between
VOL = 0.2VDD and VOH = 0.8VDD
–
2.0
–
MO1, SO1,
SO2
CL = 25pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
AO1, AO2
CL = 15pF, transition between
VOH = 0.8VDD and VOL = 0.2VDD
–
2.0
–
–
20
–
–
40
–
tf
Dt
max
Applies to external clock input use only
tr
tjitter
(1-sigma)
typ
XTI
MO1
Output clock jitter3
Unit
min
SO1, SO2
Ta = 25°C, CL = 25pF, VO = 0.5VDD
MHz
ns
ns
AO1, AO2
Ta = 25°C, CL = 15pF, VO = 0.5VDD
–
40
–
MO1, SO1,
SO2
Ta = 25°C, CL = 25pF, VO = 0.5VDD
45
50
55
AO1, AO2
Ta = 25°C, CL =15 pF, VO = 0.5VDD
45
50
55
ps
%
Settling time2
tS
All outputs
excluding XTO
–
–
1
µs
Power-up time2, 4
tP
All outputs
excluding XTO
–
1
5
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.—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
Output clock rise time2
Output clock fall time2
Output clock jitter3
Output clock duty cycle2
Power-up time2, 4
Symbol
fXTI
tr
tf
tjitter
(1-sigma)
Dt
tP
Pins
Condition
Unit
min
typ
max
XTI
Applies to external clock input use only
–
27.0000
–
MO1
CL = 40 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
SO3
CL = 25 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
SO1, SO2
CL = 15pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
MO1
CL = 40pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
SO3
CL = 25pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
SO1, SO2
CL = 15pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
MO1
Ta = 25°C, CL = 40pF, VO = 0.5VDD
–
20
–
SO3
Ta = 25°C, CL = 25pF, VO = 0.5VDD
–
40
–
SO1, SO2
Ta = 25°C, CL = 15pF, VO = 0.5VDD
–
40
–
MO1
Ta = 25°C, CL = 40pF, VO = 0.5VDD
45
50
55
SO3
Ta = 25°C, CL = 25pF, VO = 0.5VDD
45
50
55
SO1, SO2
Ta = 25°C, CL =15 pF, VO = 0.5VDD
45
50
55
–
1
5
All outputs
excluding XTO
MHz
ns
ns
ps
%
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.—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
Output clock rise time2
Output clock fall time2
Symbol
fXTI
Pins
Condition
Output clock duty cycle2
–
27.0000
–
MO1, MO2,
SO2, SO3
CL = 25 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
SO1, AO1
CL = 15pF, transition between
VOL = 0.2VDD and VOH = 0.8VDD
–
2.0
–
MO1, MO2,
SO2, SO3
CL = 25pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
SO1, AO1
CL = 15pF, transition between
VOH = 0.8VDD and VOL = 0.2VDD
–
2.0
–
–
20
–
–
70
–
tf
Dt
max
Applies to external clock input use only
tr
tjitter
(1-sigma)
typ
XTI
MO1, MO2
Output clock jitter3
Unit
min
SO2, SO3
Ta = 25°C, CL = 25pF, VO = 0.5VDD
MHz
ns
ns
SO1, AO1
Ta = 25°C, CL = 15pF, VO = 0.5VDD
–
70
–
MO1, MO2,
SO2, SO3
Ta = 25°C, CL = 25pF, VO = 0.5VDD
45
50
55
SO1, AO1
Ta = 25°C, CL =15 pF, VO = 0.5VDD
45
50
55
ps
%
Settling time2
tS
All outputs
excluding XTO
–
–
1
µs
Power-up time2, 4
tP
All outputs
excluding XTO
–
1
5
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.—11
SM8707 series
SM8707K
fXTAL = 27.0000MHz, VDD = 3.3V ± 0.3V, VSS = 0V, Ta = – 40 to + 85 °C unless otherwise noted.
Rating
Parameter
Symbol
Pins
Condition
Unit
min
typ
max
External input clock
frequency1
fXTI
XTI
Applies to external clock input use only
–
27.0000
–
MHz
Frequency deviation1
Df
SO1, SO2, SO3,
SO4, AO1
Applies to external clock input use only,
When frequency deviation of master
clock is 0ppm
–15
–
+15
ppm
Output clock rise time2
tr
SO1, SO2, SO3,
SO4, AO1
CL = 25 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
ns
Output clock fall time2
tf
SO1, SO2, SO3,
SO4, AO1
CL = 25pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
ns
tjitter
(1-sigma)
SO1, SO2, SO3,
SO4, AO1
Ta = 25°C, CL = 25pF, VO = 0.5VDD
–
60
–
ps
Output clock duty cycle2
Dt
SO1, SO2, SO3,
SO4, AO1
Ta = 25°C, CL = 25pF, VO = 0.5VDD
45
50
55
%
Settling time2
tS
All outputs
excluding XTO
–
–
1
µs
Power-up time2, 4
tP
All outputs
excluding XTO
–
1
5
ms
Output clock jitter3
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
Symbol
fXTI
Pins
Condition
Unit
min
typ
max
XTI
Applies to external clock input use only
–
27.0000
–
MHz
Output clock rise time2
tr
MO1, MO2, SO1,
SO2, AO1, AO2
CL = 15 pF, transition between VOL =
0.2VDD and VOH = 0.8VDD
–
2.0
–
ns
Output clock fall time2
tf
MO1, MO2, SO1,
SO2, AO1, AO2
CL = 15pF, transition between VOH =
0.8VDD and VOL = 0.2VDD
–
2.0
–
ns
–
20
–
ps
–
60
–
ps
45
50
55
%
MO1, MO2
Output clock jitter3
tjitter
(1-sigma)
SO1, SO2,
AO1, AO2
Ta = 25°C, CL = 15pF, VO = 0.5VDD
Output clock duty cycle2
Dt
MO1, MO2, SO1,
SO2, AO1, AO2
Settling time2
tS
All outputs
excluding XTO
–
–
1
µs
Power-up time2, 4
tP
All outputs
excluding XTO
–
1
5
ms
Ta = 25°C, 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)
Active Probe
(HP54701A)
DUT
DUT:Device under test
Passive Probe
(HP10435A)
Frequency &
Time Interval
Analyzer
(HP5371A)
Figure 1. Measurement circuit 1
Oscilloscope
(HP54720D
+HP54721A)
Jitter
Measurement
System
(ASA, M1)
DUT:Device under test
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
C1
XTI (Pin 7)
Internal
Circuits
Oscillator
C2
XTI (Pin 7)
Oscillator
XTO (Pin 8)
XTO (Pin 8)
C2
C1, C2 = 5 to 33pF
Internal
Circuits
C1, C2 = 5 to 33pF
MO
Figure 3. Crystal oscillator connection
(excluding SM8707K)
External Clock
External Clock
XTI (Pin 7)
Oscillator
Open
Figure 4. Crystal oscillator connection
(SM8707K)
XTI (Pin 7)
Internal
Circuits
Oscillator
Open
XTO (Pin 8)
Internal
Circuits
XTO (Pin 8)
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]
HIGH
LOW
Output clock frequency [MHz]
AO1 (Pin 9)
AO2 (Pin 10)
SO1 (Pin 13)
SO2 (Pin 15)
MO1 (Pin 3)
MO2 (Pin 4)
44.1
16.9344
(384fs)
22.5792
(512fs)
16.9344
33.8688
27.0000
27.0000
48
36.8640
(768fs)
24.5760
(512fs)
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]
HIGH
LOW
Output clock frequency [MHz]
AO1 (Pin 9)
AO2 (Pin 10)
SO1 (Pin 13)
SO2 (Pin 15)
MO1 (Pin 3)
MO2 (Pin 4)
48
24.5760
(512fs)
24.5760
(512fs)
33.8688
33.8688
27.0000
27.0000
44.1
22.5792
(512fs)
22.5792
(512fs)
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]
HIGH
LOW
Output clock frequency [MHz]
AO1 (Pin 9)
AO2 (Pin 10)
SO1 (Pin 13)
SO2 (Pin 15)
MO1 (Pin 3)
44.1
33.8688
(768fs)
33.8688
(768fs)
16.9344
33.8688
27.0000
48
36.8640
(768fs)
36.8640
(768fs)
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)
SO2 (Pin 10)
SO3 (Pin 13)
MO1 (Pin 3)
33.8688
33.8688
33.8688
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]
HIGH
LOW
Output clock frequency [MHz]
AO1 (Pin 10)
SO1 (Pin 9)
SO2 (Pin 13)
SO3 (Pin 15)
MO1 (Pin 3)
MO2 (Pin 4)
44.1
22.5792
(512fs)
36.8640
16.9344
33.8688
27.0000
27.0000
48
24.5760
(512fs)
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]
HIGH
LOW
Output clock frequency [MHz]
AO1 (Pin 10)
SO1 (Pin 4)
SO2 (Pin 9)
SO3 (Pin 13)
SO4 (Pin 15)
44.1
33.8688
(768fs)
24.5760
18.4320
36.8640
33.8688
48
36.8640
(768fs)
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]
HIGH
LOW
Output clock frequency [MHz]
AO1 (Pin 9)
AO2 (Pin 10)
SO1 (Pin 13)
SO2 (Pin 15)
MO1 (Pin 3)
MO2 (Pin 4)
44.1
33.8688
(768fs)
33.8688
(768fs)
24.5760
33.8688
27.0000
27.0000
48
36.8640
(768fs)
36.8640
(768fs)
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 AO× 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 AO× clock output by a maximum of 1µs, and then the output clock changes to reflect the current FSEL setting.
fs = 48kHz
(SM8707E: fs = 44.1kHz)
fs = 44.1kHz
(SM8707E: fs = 48kHz)
FSEL
AO
1µs (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 AO× clocks for a fixed interval, which means the settling time is a maximum 1µs
when the sampling frequency is switched.
0.8VDD
FSEL
0.2VDD
tS
AO
MO
SO
fs = 48kHz
(SM8707E: fs = 44.1kHz)
tS
fs = 44.1kHz
(SM8707E: fs = 48kHz)
fs = 48kHz
(SM8707E: fs = 44.1kHz)
27.0000MHz
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
Version
SM8707D
FSEL polarity
(Pin 14)
Sampling
frequency
fs [kHz]
Pin 3
Pin 4
Pin 9
Pin 10
Pin 13
Pin 15
H
44.1
27.0000
27.0000
16.9344
(384fs)
22.5792
(512fs)
16.9344
33.8688
L
48.0
27.0000
27.0000
36.8640
(768fs)
24.5760
(512fs)
16.9344
33.8688
25
25
15
15
25
25
MO1
MO2
AO1
AO2
SO1
SO2
Output load capacitance [pF]
Pin name
SM8707E
Output clock frequency [MHz]
H
48.0
27.0000
27.0000
24.5760
(512fs)
24.5760
(512fs)
33.8688
33.8688
L
44.1
27.0000
27.0000
22.5792
(512fs)
22.5792
(512fs)
33.8688
33.8688
40
25
15
15
15
15
MO1
MO2
AO1
AO2
SO1
SO2
33.8688
(768fs)
33.8688
(768fs)
16.9344
33.8688
36.8640
(768fs)
36.8640
(768fs)
16.9344
33.8688
Output load capacitance [pF]
Pin name
H
44.1
27.0000
−
SM8707F
L
48.0
Output load capacitance [pF]
Pin name
−
SM8707G
−
Output load capacitance [pF]
Pin name
SM8707H
27.0000
25
−
15
15
25
25
MO1
NC1
AO1
AO2
SO1
SO2
27.0000
−
33.8688
33.8688
33.8688
−
40
−
15
15
25
−
MO1
NC1
SO1
SO2
SO3
NC1
H
44.1
27.0000
27.0000
36.8640
22.5792
(512fs)
16.9344
33.8688
L
48.0
27.0000
27.0000
36.8640
24.5760
(512fs)
16.9344
33.8688
25
25
15
15
25
25
MO1
MO2
SO1
AO1
SO2
SO3
24.5760
18.4320
33.8688
(768fs)
36.8640
33.8688
24.5760
18.4320
36.8640
(768fs)
36.8640
33.8688
−
25
25
25
25
25
NC1
SO1
SO2
AO1
SO3
SO4
Output load capacitance [pF]
Pin name
H
44.1
−
SM8707K
L
48.0
Output load capacitance [pF]
Pin name
SM8707L
H
44.1
27.0000
27.0000
33.8688
(768fs)
33.8688
(768fs)
24.5760
33.8688
L
48.0
27.0000
27.0000
36.8640
(768fs)
36.8640
(768fs)
24.5760
33.8688
15
15
15
15
15
15
MO1
MO2
AO1
AO2
SO1
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: [email protected]
NC0107CE
2003.12
NIPPON PRECISION CIRCUITS INC.—20