PI6C6612LE [PERICOM]
Video Clock Generator, 73.728MHz, CMOS, PDSO16, GREEN, TSSOP-16;
| 型号： | PI6C6612LE |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | Video Clock Generator, 73.728MHz, CMOS, PDSO16, GREEN, TSSOP-16 时钟 光电二极管 外围集成电路 晶体 |
| 文件： | 总5页 (文件大小：396K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI6C6612
3.3V Precision Audio Clock Synthesizer
Features
Description
•
•
•
Precision clock generator for digital audio application
The PI6C6612 is a precision clock generator designed to provide
synchronous clock signals for digital audio applications with
sampling clock rates derived from an MPEG stream. The device
can also be used as a standalone clock source with a 27 MHz
crystal.
One copy of Reference clock at 27 MHz
Supports various audio sampling rates: 128x, 256x, 384x,
512x and 768x
•
•
•
•
•
•
Support Crystal or Reference clock signal input
Low Phase Noise: -75 dBc @ 100Hz
Low Short Term Jitter: 175ps (typical)
Low Long Term Jitter: 1.1ns (typical)
Industrial Temperature Range (-40°C ~ +85°C)
Packaging (Pb-Free & Green):
Split power supply pins and ground pins help to provide excel-
lent phase noise and long term jitter performance for superior
synchronization and Signal-to-Noise ratio.
PI6C6612 is one example of Pericom’s multimedia clock prod-
ucts, if you have other applications for custom clock designs,
either with different clock input or output that is not specified
here, please contact Pericom.
—16-pin TSSOP
Block Diagram
Output Clock Selection Table from 27 MHz input
S3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
S2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
S1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
S0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Clock (MHz)
8.192
REF
11.2896
12.288
24.576
9.216
XTAL
OSC
X2
X1/REFIN
Clock
PLL
SELIN
S[3:0]
16.9344
18.432
36.864
16.384
22.5792
5.6448
49.152
6.1440
33.8688
8.4672
73.728
08-0298
PS8794C
11/12/08
1
PI6C6612
3.3V Precision Audio Clock Synthesizer
Pin Assignment
X1REFIN
VDD
VDD
S0*
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X2
REF
VDD
GND
SELIN*
VDD
GND
GND
S3*
S1*
Clock
S2*
*Internal Pull-Up
Pin Description
Pin Name
X1/REF
Pin No
I/O Type Pin Description
1
I
Power
I
Crystal or Reference clock input. See "Recommended Crystal Specifications" for details.
IN
V
2, 3, 11, 14
Power supply
DD
S *
0
4
Output clock selection
GND
5, 6, 13
Ground Ground
S *
7
8
I
I
Output clock selection
3
S *
2
Output clock selection
Clock
9
O
I
Clock output
S *
1
10
12
15
16
Output clock selection
SELIN*
REF
I
Input clock selection. Low: reference clock input; High: crystal clock input
Reference clock input
O
I
X
2
Crystal clock input; leave open if SELIN=Low
* Internally Pulled High
08-0298
PS8794C
11/12/08
2
PI6C6612
3.3V Precision Audio Clock Synthesizer
Electrical Specifications
Maximum Ratings
Item
Rating
Supply Voltage to Ground Potential
All Inputs and Outputs
Ambient Operating Temperature
Storage Temperature
5.5V
-0.5 to V
+0.5V
DD
-40 to +85°C
-65 to +150°C
150°C
Junction Temperature
Soldering Temperature
260°C
Note: Beyond maximum ratings may cause device damage
Recommended Operation Conditions
Parameter
Min.
-40
Typ.
Max.
+85
Unit
°C
Ambient Operating Temperature
Power Supply Voltage (measured in respect to GND)
+3.0
+3.6
V
DC Electrical Characteristics
V
DD
= 3.3V ±10%, Ambient Temperature -40 to +85°C
Symbol
Parameter
Operating Voltage
Conditions
Min.
3.0
2
Typ.
Max.
Unit
V
DD
3.6
V
V
V
IH
Input High Voltage
Input Low Voltage
V
IL
0.8
V
V
V
Output High Voltage
Output High Voltage
Output Low Voltage
Supply Current
I
I
I
= -4mA
V
-0.4
V
OH
OH
OH
OL
DD
= -12mA
= +12mA
2.4
V
OH
V
0.4
V
OL
I
No Load
25
±65
20
mA
mA
Ω
DD
I
OS
Short Circuit Current
Nominal Output Impedance
Input Capacitance
Each output
Z
OUT
Z
Input pins
7
pF
KΩ
IN
R
Internal pull-up resistor
120
Pullup
AC Electrical Characteristics
V
DD
= 3.3V ±10%, Ambient Temperature -40 to +85°C
Symbol
Parameter
Crystal Frequency
Conditions
Min.
Typ.
Max.
28
Unit
MHz
ns
F
cry
27
t
Output Clock Rise Time
Output Clock Fall Time
Output Duty Cycle
20% to 80%, 15pF load
1.5
1.5
55
Rise
t
80% to 20%, 15pF load
ns
Fall
t
Measured at VDD/2, 15pF load
45
50
%
DC
08-0298
PS8794C
11/12/08
3
PI6C6612
3.3V Precision Audio Clock Synthesizer
T
T
Short term jitter
Reference clock off
175
175
1100
1100
-50
-75
-80
-75
0
ps p-p
ps p-p
ps p-p
ps p-p
dBc
j_short
Short term jitter
Reference clock on
j_short
T
Long term jitter
j_long
j_long
Reference clock off; 10 μ delay
Reference clock on; 10 μ delay
33 MHz; 10Hz offset
T
Long term jitter
Single sideband phase noise
Single sideband phase noise
Single sideband phase noise
Single sideband phase noise
Phase Noise
Phase Noise
Phase Noise
Phase Noise
33 MHz; 100Hz offset
33 MHz; 1kHz offset
dBc
dBc
33 MHz; 10kHz offset
dBc
F
Actual mean frequency error versus
target
ppm
ERROR
Thermal Characteristics
Symbol
θJA
Parameter
Conditions
Still air
Min.
Typ.
78
Max.
Unit
°C/W
°C/W
°C/W
°C/W
Thermal Resistance Junction to
Ambient
θJA
1 min m/s air flow
3 min m/s air flow
70
θJA
68
θJC
37
Thermal Resistance Junction to Case
Recommended Crystal Specification
Pericom's 49SMLB27.0000 MHz parallel resonance crystal is recommended.
Recommended Crystal Specification
Parameter
Value
Units
Mode of oscillation
Frequency
Fundamental AT
27
±50
±50
240
18
MHz
PPM
PPM
Frequency Tolerance
Temperature and aging stability
C0/C1 ratio
Load cap
pF
Equivalent series resistance
30
Ω
08-0298
PS8794C
11/12/08
4
PI6C6612
3.3V Precision Audio Clock Synthesizer
Packaging Mechanical: 16-pin TSSOP (L16)
16
.169
.177
4.3
4.5
1
0.09
.004
.193
.201
0.20
.008
4.9
5.1
.047
max.
1.20
0.45 .018
0.75 .030
SEATING
PLANE
.252
BSC
6.4
.002
.006
0.05
0.15
.0256
BSC
.007
.012
0.65
0.19
0.30
Ordering Information
Ordering Code
Package Code
Package Type
Pb-free & Green 16-pin TSSOP
Operating Range
PI6C6612LE
L
Industrial
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
5
08-0298
PS8794C
11/12/08
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