SM8707 [NPC]
Clock Generator with Dual PLLs; 时钟发生器，提供双PLL
| 型号： | SM8707 |
| 厂家： | 
NIPPON PRECISION CIRCUITS INC |
| 描述： | Clock Generator with Dual PLLs |
| 文件： | 总20页 (文件大小：134K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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 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
ꢀ PLL loop filter built-in
ꢀ Low current consumption: 35mA typ.
ꢀ Crystal oscillator circuit built-in
ꢀ Sampling frequency fs: 44.1/48kHz
ꢀ 16-pin VSOP package (Pb free)
(V = 3.3V, all outputs with no load)
DD
ꢀ 27MHz master clock
(internal PLL reference clock)
ꢀ Generated clocks (Refer to “Output Frequency Listing” on page 18 for details.)
SM8707D
27.0000MHz
512fs
SM8707E
SM8707F
SM8707G
SM8707H
SM8707K
SM8707L
Video system
output
27.0000MHz
27.0000MHz
27.0000MHz
27.0000MHz
−
27.0000MHz
Audio system
output
1
768fs
384fs
512fs
768fs
−
512fs
768fs
768fs
1
18.4320MHz
24.5760MHz
33.8688MHz
36.8640MHz
16.9344MHz
33.8688MHz
36.8640MHz
Signal processor
system output
16.9344MHz
33.8688MHz
16.9344MHz
33.8688MHz
24.5760MHz
33.8688MHz
33.8688MHz
33.8688MHz
1. 384fs (fs = 44.1kHz)/768fs (fs = 48kHz)
ꢀ Low jitter output (1-sigma output load capacitance typical values)
SM8707D
SM8707E
SM8707F
SM8707G
SM8707H
SM8707K
SM8707L
Video system
output
20ps
20ps
20ps
20ps
20ps
−
20ps
Audio and Signal
processor
system output
70ps
55ps
40ps
40ps
70ps
60ps
60ps
APPLICATIONS
PACKAGE DIMENSIONS
(Unit: mm)
ꢀ DVD players/recorders
ꢀ DVD car navigation system
Weight: 0.07g
ORDERING INFORMATION
Device
Package
SM8707DV
SM8707EV
SM8707FV
SM8707GV
SM8707HV
SM8707KV
SM8707LV
+ 0.1
0.15
- 0.05
0.275typ
5.1 0.2
16-pin VSOP
0 to 10
0.65
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)
SM8707
SM8707
L
K
H
G
F
E
D
D
E
F
G
H
K
L
NC2
VDD1
VSS1
16
1
SO2 SO4 SO3 NC1 SO2 SO2 SO2
FSEL FSEL FSEL NC2 FSEL FSEL FSEL
SO1 SO3 SO2 SO3 SO1 SO1 SO1
VDD3
MO1 MO1 MO1 MO1 MO1 NC1 MO1
MO2 MO2 NC1 NC1 MO2 SO1 MO2
VDD2
VSS2
XTI
VSS3
AO2 AO1 AO1 SO2 AO2 AO2 AO2
AO1 SO2 SO1 SO1 AO1 AO1 AO1
XTO
9
8
PIN DESCRIPTION
Name
MO×
AO×
I/O
O
O
O
I
Description
Video system output
Audio system output
SO×
Signal processor system output
Sampling frequency select
FSEL
XTI
I
Crystal oscillator connection or external clock input
Crystal oscillator connection
Supply for digital block
XTO
O
–
VDD1
VSS1
VDD2
VSS2
VDD3
VSS3
NC1
–
Ground for digital block
–
Supply for analog block
–
Ground for analog block
–
Supply for digital block
–
Ground for digital block
O
I
No connection output (leave pin open circuit)
NC2
No connection (leave pin open circuit or connect to VDD)
NIPPON PRECISION CIRCUITS INC.—2
SM8707 series
BLOCK DIAGRAM
FSEL (NC: SM8707G)
Reference
Divider 0
Phase
Detector 0
Charge
LPF 0
AO (NC: SM8707G)
VCO 0
Pump 0
XTI
X'tal
OSC
XTO
Loop
Divider 0
SO
Control
Logic
Reference
Divider 1
Phase
Detector 1
Charge
LPF 1
VCO 1
Pump 1
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
Symbol
Condition
Rating
Unit
Supply voltage range
V
, V , V
DD1 DD2 DD3
− 0.3 to + 6.5
V
V
V
– V
– V
,
,
DD1
DD1
DD2
DD3
Supply voltage deviation
0.1
V
V
– V
DD3
DD2
Input voltage range
V
− 0.3 to V + 0.3
DD
V
V
IN
Output voltage range
Power dissipation
V
− 0.3 to V + 0.3
DD
OUT
P
165
mW
°C
D
Storage temperature range
T
− 55 to + 125
stg
Recommended Operating Conditions
V
= V
= V
= V
= 0V unless otherwise noted.
SS
SS1
SS2
SS3
Note 1:The supply voltage is defined relative to V = 0V.
SS
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
Symbol
Condition
Unit
min
+ 3.0
–
typ
max
+ 3.6
25
Supply voltage ranges
V
, V , V
DD1 DD2 DD3
(Note 1, 2, 3)
–
V
pF
Output load capacitance 1
Output load capacitance 2
Master clock frequency
Operating temperature range
C
MO1, MO2, SO1, SO2 outputs
AO1, AO2 outputs
–
L1
C
–
–
27.0000
–
15
pF
L2
f
When using crystal oscillator
–
–
MHz
°C
XTAL
T
– 40
+ 85
opr
SM8707E
Rating
Parameter
Symbol
Condition
Unit
min
+ 3.0
–
typ
max
+ 3.6
40
Supply voltage ranges
V
, V , V
DD1 DD2 DD3
(Note 1, 2, 3)
–
V
pF
Output load capacitance 1
Output load capacitance 2
Output load capacitance 3
Master clock frequency
C
MO1 output
–
L1
C
MO2 output
–
–
25
pF
L2
C
SO1, SO2, AO1, AO2 outputs
When using crystal oscillator
–
–
27.0000
–
15
pF
L3
f
–
–
MHz
°C
XTAL
Operating temperature range
T
– 10
+ 75
opr
NIPPON PRECISION CIRCUITS INC.—4
SM8707 series
SM8707F
Rating
Parameter
Symbol
Condition
Unit
min
+ 3.0
–
typ
max
+ 3.6
25
Supply voltage ranges
V
, V , V
DD1 DD2 DD3
(Note 1, 2, 3)
–
V
pF
Output load capacitance 1
Output load capacitance 2
Master clock frequency
Operating temperature range
C
MO1, SO1, SO2 outputs
AO1, AO2 outputs
–
L1
C
–
–
27.0000
–
15
pF
L2
f
When using crystal oscillator
–
–
MHz
°C
XTAL
T
– 40
+ 85
opr
SM8707G
Rating
Parameter
Symbol
Condition
Unit
min
+ 3.0
–
typ
max
+ 3.6
40
Supply voltage ranges
V
, V , V
DD1 DD2 DD3
(Note 1, 2, 3)
–
V
pF
Output load capacitance 1
Output load capacitance 2
Output load capacitance 3
Master clock frequency
C
MO1 output
–
L1
C
SO3 output
–
–
25
pF
L2
C
SO1, SO2 outputs
When using crystal oscillator
–
–
27.0000
–
15
pF
L3
f
–
–
MHz
°C
XTAL
Operating temperature range
T
– 10
+ 75
opr
SM8707H
Rating
Parameter
Symbol
Condition
Unit
min
+ 3.0
–
typ
max
+ 3.6
25
Supply voltage ranges
V
, V , V
DD1 DD2 DD3
(Note 1, 2, 3)
–
V
pF
Output load capacitance 1
Output load capacitance 2
Master clock frequency
Operating temperature range
C
MO1, MO2, SO2, SO3 outputs
AO1, SO1 outputs
–
L1
C
–
–
27.0000
–
15
pF
L2
f
When using crystal oscillator
–
–
MHz
°C
XTAL
T
– 40
+ 85
opr
SM8707K
Rating
Parameter
Symbol
Condition
Unit
min
+ 3.0
–
typ
max
+ 3.6
25
Supply voltage ranges
V
, V , V
DD1 DD2 DD3
(Note 1, 2, 3)
–
V
pF
Output load capacitance
Master clock frequency
Operating temperature range
C
Outputs
–
27.0000
–
L
f
When using crystal oscillator
–
–
MHz
°C
XTAL
T
– 40
+ 85
opr
SM8707L
Rating
Parameter
Symbol
Condition
Unit
min
+ 3.0
–
typ
max
+ 3.6
15
Supply voltage ranges
V
, V , V
DD1 DD2 DD3
(Note 1, 2, 3)
–
V
pF
Output load capacitance
Master clock frequency
Operating temperature range
C
Outputs excluding XTO
When using crystal oscillator
–
27.0000
–
L
f
–
–
MHz
°C
XTAL
T
– 40
+ 85
opr
NIPPON PRECISION CIRCUITS INC.—5
SM8707 series
DC Electrical Characteristics
ꢀ SM8707D/F/H/K/L
f
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 40 to + 85 °C unless otherwise noted.
XTAL
DD SS
ꢀ SM8707E/G
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 10 to + 75 °C unless otherwise noted.
f
XTAL
DD
SS
Rating
typ
Parameter
Symbol
Pins
Condition
Unit
mA
V
min
max
V
= 3.3V, Ta = 25°C, Excluding
DD
–
35
20
45
Current
consumption
fs = 48kHz, Crystal
oscillator connected,
no load on all outputs
SM8707G
I
VDD
DD
SM8707G
–
27
V
0.8 V
–
–
–
–
–
–
–
–
–
IH
DD
Input voltage
FSEL, XTI
V
= 3.3V
DD
V
–
–
0.2 V
IL
DD
I
V
V
V
V
I
= V
DD
1
−
IH1
IN
IN
IN
IN
1
FSEL
I
= 0V
= V
– 100
–
IL1
Input current
µA
V
I
40
−
IH2
DD
XTI
I
= 0V
– 40
IL2
V
= − 2mA
= 2mA
V − 0.4
DD
–
OH
OH
OL
All outputs
excluding XTO
Output voltage
V
I
–
0.4
OL
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
f
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 40 to + 85 °C unless otherwise noted.
DD SS
XTAL
Rating
typ
Parameter
Symbol
Pins
Condition
Unit
min
max
External input clock
1
f
XTI
Applies to external clock input use only
–
27.0000
2.0
–
MHz
XTI
frequency
MO1, MO2,
SO1, SO2
C = 25 pF, transition between V
L
=
OL
–
–
–
–
–
–
–
–
0.2V and V = 0.8V
DD
DD
OH
2
Output clock rise time
t
ns
ns
r
C = 15pF, transition between
L
AO1, AO2
2.0
V
= 0.2V and V = 0.8V
DD OH DD
OL
MO1, MO2,
SO1, SO2
C = 25pF, transition between V
L
=
OH
2.0
0.8V and V = 0.2V
DD
DD
OL
2
Output clock fall time
t
f
C = 15pF, transition between
L
AO1, AO2
2.0
V
= 0.8V and V = 0.2V
DD OL DD
OH
MO1, MO2
SO1, SO2
AO1, AO2
–
–
–
20
70
70
–
–
–
Ta = 25°C, C = 25pF, V = 0.5V
DD
L
O
t
3
jitter
(1-sigma)
Output clock jitter
ps
%
Ta = 25°C, C = 15pF, V = 0.5V
L
O
DD
DD
DD
MO1, MO2,
SO1, SO2
Ta = 25°C, C = 25pF, V = 0.5V
45
45
–
50
50
–
55
55
1
L
O
2
Output clock duty cycle
Dt
AO1, AO2
Ta = 25°C, C =15 pF, V = 0.5V
L O
All outputs
excluding XTO
2
Settling time
t
µs
S
All outputs
excluding XTO
2, 4
Power-up time
t
–
1
5
ms
P
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
f
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 10 to + 75 °C unless otherwise noted.
DD SS
XTAL
Rating
typ
Parameter
Symbol
Pins
Condition
Unit
min
max
External input clock
1
f
XTI
Applies to external clock input use only
–
27.0000
2.0
–
MHz
XTI
frequency
C = 40 pF, transition between V
L
=
=
OL
MO1
MO2
–
–
–
–
–
–
–
–
–
–
–
–
0.2V and V = 0.8V
DD
DD
OH
C = 25 pF, transition between V
L
2
OL
Output clock rise time
t
2.0
ns
r
0.2V and V = 0.8V
DD
DD
OH
SO1, SO2,
AO1, AO2
C = 15pF, transition between V
L
=
OL
2.0
0.2V and V = 0.8V
DD
DD
OH
C = 40pF, transition between V
=
=
=
L
OH
OH
OH
MO1
MO2
2.0
0.8V and V = 0.2V
DD
DD
OL
C = 25pF, transition between V
2
L
Output clock fall time
t
2.0
ns
f
0.8V and V = 0.2V
DD
DD
OL
SO1, SO2,
AO1, AO2
C = 15pF, transition between V
L
2.0
0.8V and V = 0.2V
DD
DD
OL
MO1
MO2
Ta = 25°C, C = 40pF, V = 0.5V
DD
–
–
20
20
–
–
L
O
t
Ta = 25°C, C = 25pF, V = 0.5V
L O
3
jitter
(1-sigma)
DD
Output clock jitter
ps
%
SO1, SO2,
AO1, AO2
Ta = 25°C, C = 15pF, V = 0.5V
–
55
–
L
O
DD
MO1
MO2
Ta = 25°C, C = 40pF, V = 0.5V
45
45
50
50
55
55
L
O
DD
DD
Ta = 25°C, C = 25pF, V = 0.5V
2
L
O
Output clock duty cycle
Dt
SO1, SO2,
AO1, AO2
Ta = 25°C, C =15 pF, V = 0.5V
45
–
50
–
55
1
L
O
DD
2
Settling time
t
AO1, AO2
µs
S
All outputs
excluding XTO
2, 4
Power-up time
t
–
1
5
ms
P
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
f
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 40 to + 85 °C unless otherwise noted.
DD SS
XTAL
Rating
typ
Parameter
Symbol
Pins
Condition
Unit
min
max
External input clock
1
f
XTI
Applies to external clock input use only
–
27.0000
2.0
–
MHz
XTI
frequency
MO1, SO1,
SO2
C = 25 pF, transition between V
L
=
OL
–
–
–
–
–
–
–
–
0.2V and V = 0.8V
DD
DD
OH
2
Output clock rise time
t
ns
ns
r
C = 15pF, transition between
L
AO1, AO2
2.0
V
= 0.2V and V = 0.8V
DD OH DD
OL
MO1, SO1,
SO2
C = 25pF, transition between V
L
=
OH
2.0
0.8V and V = 0.2V
DD
DD
OL
2
Output clock fall time
t
f
C = 15pF, transition between
L
AO1, AO2
2.0
V
= 0.8V and V = 0.2V
DD OL DD
OH
MO1
–
–
–
20
40
40
–
–
–
Ta = 25°C, C = 25pF, V = 0.5V
DD
L
O
t
3
jitter
(1-sigma)
Output clock jitter
SO1, SO2
AO1, AO2
ps
%
Ta = 25°C, C = 15pF, V = 0.5V
L
O
DD
DD
DD
MO1, SO1,
SO2
Ta = 25°C, C = 25pF, V = 0.5V
45
45
–
50
50
–
55
55
1
L
O
2
Output clock duty cycle
Dt
AO1, AO2
Ta = 25°C, C =15 pF, V = 0.5V
L O
All outputs
excluding XTO
2
Settling time
t
µs
S
All outputs
excluding XTO
2, 4
Power-up time
t
–
1
5
ms
P
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
f
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 10 to + 75 °C unless otherwise noted.
DD SS
XTAL
Rating
typ
Parameter
Symbol
Pins
Condition
Unit
min
max
External input clock
1
f
XTI
Applies to external clock input use only
–
27.0000
2.0
–
MHz
XTI
frequency
C = 40 pF, transition between V
L
=
=
OL
MO1
SO3
–
–
–
–
–
–
–
–
–
–
–
–
0.2V and V = 0.8V
DD
DD
OH
C = 25 pF, transition between V
L
2
OL
Output clock rise time
t
2.0
ns
r
0.2V and V = 0.8V
DD
DD
OH
C = 15pF, transition between V
L
=
OL
SO1, SO2
MO1
2.0
0.2V and V = 0.8V
DD
DD
OH
C = 40pF, transition between V
=
=
=
L
OH
OH
OH
2.0
0.8V and V = 0.2V
DD
DD
OL
C = 25pF, transition between V
2
L
Output clock fall time
t
SO3
2.0
ns
ps
f
0.8V and V = 0.2V
DD
DD
OL
C = 15pF, transition between V
L
SO1, SO2
2.0
0.8V and V = 0.2V
DD
DD
OL
MO1
Ta = 25°C, C = 40pF, V = 0.5V
DD
–
–
20
40
40
50
50
50
–
–
L
O
t
3
jitter
(1-sigma)
Output clock jitter
SO3
Ta = 25°C, C = 25pF, V = 0.5V
L O
DD
DD
DD
DD
DD
SO1, SO2
MO1
Ta = 25°C, C = 15pF, V = 0.5V
–
–
L
O
Ta = 25°C, C = 40pF, V = 0.5V
45
45
45
55
55
55
L
O
2
Output clock duty cycle
Dt
SO3
Ta = 25°C, C = 25pF, V = 0.5V
%
L
O
SO1, SO2
Ta = 25°C, C =15 pF, V = 0.5V
L O
All outputs
excluding XTO
2, 4
Power-up time
t
–
1
5
ms
P
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
f
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 40 to + 85 °C unless otherwise noted.
DD SS
XTAL
Rating
typ
Parameter
Symbol
Pins
Condition
Unit
min
max
External input clock
1
f
XTI
Applies to external clock input use only
–
27.0000
2.0
–
MHz
XTI
frequency
MO1, MO2,
SO2, SO3
C = 25 pF, transition between V
L
=
OL
–
–
–
–
–
–
–
–
0.2V and V = 0.8V
DD
DD
OH
2
Output clock rise time
t
ns
ns
r
C = 15pF, transition between
L
SO1, AO1
2.0
V
= 0.2V and V = 0.8V
DD OH DD
OL
MO1, MO2,
SO2, SO3
C = 25pF, transition between V
L
=
OH
2.0
0.8V and V = 0.2V
DD
DD
OL
2
Output clock fall time
t
f
C = 15pF, transition between
L
SO1, AO1
2.0
V
= 0.8V and V = 0.2V
DD OL DD
OH
MO1, MO2
SO2, SO3
SO1, AO1
–
–
–
20
70
70
–
–
–
Ta = 25°C, C = 25pF, V = 0.5V
DD
L
O
t
3
jitter
(1-sigma)
Output clock jitter
ps
%
Ta = 25°C, C = 15pF, V = 0.5V
L
O
DD
DD
DD
MO1, MO2,
SO2, SO3
Ta = 25°C, C = 25pF, V = 0.5V
45
45
–
50
50
–
55
55
1
L
O
2
Output clock duty cycle
Dt
SO1, AO1
Ta = 25°C, C =15 pF, V = 0.5V
L O
All outputs
excluding XTO
2
Settling time
t
µs
S
All outputs
excluding XTO
2, 4
Power-up time
t
–
1
5
ms
P
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
f
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 40 to + 85 °C unless otherwise noted.
DD SS
XTAL
Rating
typ
Parameter
Symbol
Pins
Condition
Unit
min
max
External input clock
1
f
XTI
Applies to external clock input use only
–
27.0000
–
–
MHz
XTI
frequency
Applies to external clock input use only,
When frequency deviation of master
clock is 0ppm
SO1, SO2, SO3,
SO4, AO1
1
Frequency deviation
D
–15
+15
ppm
f
SO1, SO2, SO3, C = 25 pF, transition between V
L
=
2
OL
Output clock rise time
t
–
–
2.0
2.0
60
50
–
–
–
ns
ns
ps
%
r
SO4, AO1
0.2V and V = 0.8V
DD
DD
OH
SO1, SO2, SO3, C = 25pF, transition between V
L
=
2
OH
Output clock fall time
t
f
SO4, AO1
0.8V and V = 0.2V
DD OL DD
t
SO1, SO2, SO3,
3
jitter
(1-sigma) SO4, AO1
Output clock jitter
Ta = 25°C, C = 25pF, V = 0.5V
DD
–
–
L
O
SO1, SO2, SO3,
SO4, AO1
2
Output clock duty cycle
Dt
Ta = 25°C, C = 25pF, V = 0.5V
DD
45
–
55
1
L
O
All outputs
excluding XTO
2
Settling time
t
µs
ms
S
All outputs
excluding XTO
2, 4
Power-up time
t
–
1
5
P
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
f
= 27.0000MHz, V = 3.3V 0.3V, V = 0V, Ta = – 40 to + 85 °C unless otherwise noted.
DD SS
XTAL
Rating
typ
Parameter
Symbol
Pins
Condition
Unit
min
max
External input clock
1
f
XTI
Applies to external clock input use only
–
27.0000
2.0
–
MHz
ns
XTI
frequency
MO1, MO2, SO1, C = 15 pF, transition between V
L
SO2, AO1, AO2
=
=
2
OL
Output clock rise time
t
–
–
r
0.2V and V = 0.8V
DD OH DD
MO1, MO2, SO1, C = 15pF, transition between V
L
2
OH
Output clock fall time
t
–
–
–
2.0
20
60
–
–
–
ns
ps
ps
f
SO2, AO1, AO2
MO1, MO2
0.8V and V = 0.2V
DD OL DD
t
3
jitter
(1-sigma)
Output clock jitter
Ta = 25°C, C = 15pF, V = 0.5V
L O DD
SO1, SO2,
AO1, AO2
MO1, MO2, SO1,
SO2, AO1, AO2
2
Output clock duty cycle
Dt
Ta = 25°C, C = 15pF, V = 0.5V
DD
45
–
50
–
55
1
%
µs
ms
L
O
All outputs
excluding XTO
2
Settling time
t
S
All outputs
excluding XTO
2, 4
Power-up time
t
–
1
5
P
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
Oscilloscope
Active Probe
DUT
(Infinium
(HP1152A)
HP54845A)
Jitter
Measurement
System
Oscilloscope
(HP54720D
+HP54721A)
Active Probe
(HP54701A)
DUT
DUT:Device under test
Frequency &
Time Interval
Analyzer
(ASA, M1)
Passive Probe
(HP10435A)
DUT:Device under test
(HP5371A)
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 max-
imum rating, otherwise damage may occur.
C1
C1
XTI (Pin 7)
XTO (Pin 8)
XTI (Pin 7)
XTO (Pin 8)
Internal
Circuits
Internal
Circuits
Oscillator
Oscillator
C2
C2
C1, C2 = 5 to 33pF
C1, C2 = 5 to 33pF
MO
Figure 3. Crystal oscillator connection
(excluding SM8707K)
Figure 4. Crystal oscillator connection
(SM8707K)
External Clock
External Clock
XTI (Pin 7)
XTO (Pin 8)
XTI (Pin 7)
XTO (Pin 8)
Internal
Circuits
Internal
Circuits
Oscillator
Oscillator
Open
Open
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)
Sampling
frequency fs
[kHz]
Output clock frequency [MHz]
FSEL
(Pin 14)
AO1 (Pin 9)
AO2 (Pin 10)
SO1 (Pin 13)
SO2 (Pin 15)
MO1 (Pin 3)
MO2 (Pin 4)
16.9344
(384fs)
22.5792
(512fs)
HIGH
LOW
44.1
48
16.9344
33.8688
27.0000
27.0000
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 deter-
mined by the setting on FSEL. In addition, the signal processor output (SO1 and SO2) is a 33.8688MHz fre-
quency 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)
Sampling
frequency fs
[kHz]
Output clock frequency [MHz]
FSEL
(Pin 14)
AO1 (Pin 9)
AO2 (Pin 10)
SO1 (Pin 13)
SO2 (Pin 15)
MO1 (Pin 3)
MO2 (Pin 4)
24.5760
(512fs)
24.5760
(512fs)
HIGH
LOW
48
33.8688
33.8688
27.0000
27.0000
22.5792
(512fs)
22.5792
(512fs)
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)
Sampling
frequency fs
[kHz]
Output clock frequency [MHz]
FSEL
(Pin 14)
AO1 (Pin 9)
AO2 (Pin 10)
SO1 (Pin 13)
SO2 (Pin 15)
MO1 (Pin 3)
33.8688
(768fs)
33.8688
(768fs)
HIGH
LOW
44.1
48
16.9344
33.8688
33.8688
27.0000
36.8640
(768fs)
36.8640
(768fs)
16.9344
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 set-
ting 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)
Sampling
frequency fs
[kHz]
Output clock frequency [MHz]
FSEL
(Pin 14)
AO1 (Pin 10)
SO1 (Pin 9)
SO2 (Pin 13)
SO3 (Pin 15)
MO1 (Pin 3)
MO2 (Pin 4)
22.5792
(512fs)
HIGH
LOW
44.1
48
36.8640
16.9344
33.8688
27.0000
27.0000
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 set-
ting 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)
Sampling
frequency fs
[kHz]
Output clock frequency [MHz]
FSEL
(Pin 14)
AO1 (Pin 10)
SO1 (Pin 4)
SO2 (Pin 9)
SO3 (Pin 13)
SO4 (Pin 15)
33.8688
(768fs)
HIGH
LOW
44.1
48
24.5760
24.5760
18.4320
36.8640
36.8640
33.8688
36.8640
(768fs)
18.4320
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 deter-
mined 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)
Sampling
frequency fs
[kHz]
Output clock frequency [MHz]
FSEL
(Pin 14)
AO1 (Pin 9)
AO2 (Pin 10)
SO1 (Pin 13)
SO2 (Pin 15)
MO1 (Pin 3)
MO2 (Pin 4)
33.8688
(768fs)
33.8688
(768fs)
HIGH
LOW
44.1
48
24.5760
33.8688
27.0000
27.0000
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 set-
ting.
fs = 44.1kHz
fs = 48kHz
(SM8707E: fs = 48kHz)
(SM8707E: fs = 44.1kHz)
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 cir-
cuit 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
tS
fs = 48kHz
(SM8707E: fs = 44.1kHz)
fs = 44.1kHz
fs = 48kHz
(SM8707E: fs = 44.1kHz)
AO
MO
SO
(SM8707E: fs = 48kHz)
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
Sampling
frequency
fs [kHz]
Output clock frequency [MHz]
FSEL polarity
(Pin 14)
Version
Pin 3
Pin 4
Pin 9
Pin 10
Pin 13
Pin 15
16.9344
(384fs)
22.5792
(512fs)
H
L
44.1
48.0
27.0000
27.0000
16.9344
33.8688
36.8640
(768fs)
24.5760
(512fs)
27.0000
27.0000
16.9344
33.8688
SM8707D
Output load capacitance [pF]
Pin name
25
25
15
15
25
25
MO1
MO2
AO1
AO2
SO1
SO2
24.5760
(512fs)
24.5760
(512fs)
H
L
48.0
44.1
27.0000
27.0000
27.0000
27.0000
33.8688
33.8688
33.8688
33.8688
22.5792
(512fs)
22.5792
(512fs)
SM8707E
Output load capacitance [pF]
Pin name
40
25
15
15
15
15
MO1
MO2
AO1
AO2
SO1
SO2
33.8688
(768fs)
33.8688
(768fs)
H
L
44.1
48.0
27.0000
27.0000
16.9344
16.9344
33.8688
33.8688
−
36.8640
(768fs)
36.8640
(768fs)
SM8707F
SM8707G
SM8707H
Output load capacitance [pF]
Pin name
25
MO1
27.0000
40
−
NC1
−
15
AO1
15
AO2
25
SO1
25
SO2
−
−
−
33.8688
15
33.8688
15
33.8688
25
Output load capacitance [pF]
Pin name
−
−
MO1
NC1
SO1
SO2
SO3
NC1
22.5792
(512fs)
H
L
44.1
48.0
27.0000
27.0000
27.0000
27.0000
36.8640
36.8640
16.9344
16.9344
33.8688
33.8688
24.5760
(512fs)
Output load capacitance [pF]
Pin name
25
25
15
15
25
25
MO1
MO2
SO1
AO1
SO2
SO3
33.8688
(768fs)
H
L
44.1
48.0
24.5760
24.5760
18.4320
18.4320
36.8640
36.8640
33.8688
33.8688
−
36.8640
(768fs)
SM8707K
Output load capacitance [pF]
Pin name
−
25
25
25
25
25
NC1
SO1
SO2
AO1
SO3
SO4
33.8688
(768fs)
33.8688
(768fs)
H
L
44.1
48.0
27.0000
27.0000
27.0000
27.0000
24.5760
24.5760
33.8688
33.8688
36.8640
(768fs)
36.8640
(768fs)
SM8707L
Output load capacitance [pF]
Pin name
15
15
15
15
15
15
MO1
MO2
AO1
AO2
SO1
SO2
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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NPC
SM8721AB
3-PLL Multi-Output Clock GeneratorWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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NPC
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