ICST AV9120M-45, ICS9120M-45 Datasheet
Integrated
Circuit
Systems, Inc.
General Description
Features
ICS9120-45
Low-Cost 8-Pin Frequency Generator
9120-45 Rev B 05/23/97
This data sheet (ICS9120-45) is an addedum to the existing ICS9120-08/09
data sheet. All information in this data sheet supersedes the data found in the
orginal ICS9120-08/09 data sheet.
The ICS9120-45 is a high performance frequency generator
designed to support the clock requirements of communication
and audio interfaces.
High accuracy, low-jitter PLLs meet the -96dB signal-tonoise ratios required by 16-bit audio systems. Fast output
clock edge rates minimize board induced jitter.
The on-chip XT AL oscillator accuracy is better than ±100ppm
for an AT cut, 18pF load crystal with initial accuracy of ppm
plus TC, aging and load variation of ±20ppm each assuming
33pF ±5% external load capacitors.
• Generates 32MHz, 40MHz and 48MHz
• Single 10 MHz crystal reference
• 49.92 MHz accuracy tracks 40.32 MHz reference
• 80ps one sigma jitter maintains 16-bit performance
• Output rise/fall times less than 1.5ns
• On-chip loop filter components
• 3.0-5.5V supply range
• 8-pin, 150-mil SOIC package
Pin Configuration
8 Pin SOIC
Block Diagram
ICS reserves the right to make changes in the device data identified in this
publication without further notice. ICS advises its customers to obtain the latest
version of all device data to verify that any information being relied upon by the
customer is current and accurate.
2
ICS9120-45
Pin Descriptions
Note: The 10.00 MHz crystal that is connected to pin 1 and 8 is a parallel resonant component
that is designed to operate into a 8pF capacitive load. This device is a 5V power supply device.
PIN
NUMBER
PIN NAME TYPE DESCRIPTION
1 X1 Input 10.00 MHz input from crystal.
2 VDD Power +Power supply input.
3 40.00 MHz Output 40 MHz clock output.
4 50.00 MHz Output 50 MHz clock output.
5 48.00 MHz Output 48 MHz clock output.
6 GND Power Ground return for Pin 2.
7 32.00 MHz Output 32 MHz clock output.
8 X2 Output 10.00 MHz output.
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