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Integrated Device Technology Electronic Components Datasheet



ICS661

PRECISION AUDIO CLOCK SOURCE


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ICS661 pdf
PRECISION AUDIO CLOCK SOURCE
DATASHEET
ICS661
Description
www.datasheet4u.com
The ICS661 provides synchronous clock generation for
audio sampling clock rates derived from an MPEG stream,
or can be used as a standalone clock source with a 27 MHz
crystal. The device uses the latest PLL technology to
provide excellent phase noise and long term jitter
performance for superior synchronization and S/N ratio.
Please contact IDT if you have a requirement for an input
and output frequency not included here - we can rapidly
modify this product to meet special requirements.
Features
Packaged in 16-pin TSSOP
Available in Pb (lead) fere package
Clock or crystal input
Low phase noise
Low jitter
Exact (0 ppm) multiplication ratios
Reference clock output available
Support for 256, 384, 512, and 768 times sampling rate
Block Diagram
X2
X1/REFIN
SELIN
S3:0 4
VDD (P2)
Crystal
Oscillator
VDD (P3) VDDO VDDR
REF
GND (P13)
PLL Clock
Synthesis
GND (P6) GND (P5)
CLK
IDT™ / ICS™ PRECISION AUDIO CLOCK SOURCE
1
ICS661
REV D 111804



No Preview Available !

ICS661 pdf
ICS661
PRECISION AUDIO CLOCK SOURCE
CLOCK SYNTHESIZER
Pin Assignment
X1/REFIN
www.datasheet4uV.cDoDm
VDD
S0
GND
GND
S3
S2
1
2
3
4
5
6
7
8
16 X2
15 REF
14 VDDR
13 GND
12 SELIN
11 VDDO
10 S1
9 CLK
16-pin 4.40 mil body, 0.50 mm pitch TSSOP
Pin Descriptions
Output Clock Selection Table
Input
Output
S3 S2 S1 S0 Frequency Frequency
(MHz)
(MHz)
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
8.192
11.2896
12.288
24.576
12.288
16.9344
18.432
36.864
16.384
22.5792
24.576
49.152
24.576
33.8688
36.864
73.728
Pin Pin
Number Name
1 X1/REFIN
2 VDD
3 VDD
4 S0
5 GND
6 GND
7 S3
8 S2
9 CLK
10 S1
11 VDDO
12 SELIN
13 GND
14 VDDR
15 REF
16 X2
Pin
Type
Input
Power
Power
Input
Power
Power
Input
Input
Output
Input
Power
Input
Power
Power
Output
Input
Pin Description
Connect this pin to a crystal or clock input
Power supply for crystal oscillator.
Power supply for PLL.
Output frequency selection. Determines output frequency per table above. On chip pull-up.
Connect to ground.
Ground for output stage.
Output frequency selection. Determines output frequency per table above. On chip pull-up.
Output frequency selection. Determines output frequency per table above. On chip pull-up.
Clock output.
Output frequency selection. Determines output frequency per table above. On chip pull-up.
Power supply for output stage.
Low for clock input, high for crystal. On chip pull-up.
Connect to ground.
Power supply for reference output. Ground to turn off REF.
Reference clock output.
Connect this pin to a crystal. Leave open if using a clock input.
IDT™ / ICS™ PRECISION AUDIO CLOCK SOURCE
2
ICS661
REV D 111804



Part Number ICS661
Description PRECISION AUDIO CLOCK SOURCE
Maker Integrated Device Technology - Integrated Device Technology
Total Page 7 Pages
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