ics9120-08 Integrated Device Technology, ics9120-08 Datasheet
ics9120-08
Manufacturer Part Number
ics9120-08
Description
Frequency Generator For Multimedia Audio Synthesis
Manufacturer
Integrated Device Technology
Datasheet
1.ICS9120-08.pdf
(7 pages)
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Frequency Generator for Multimedia Audio Synthesis
General Description
The ICS9120-08 and ICS 9120-09 are high performance
frequency generators designed to support stereo audio
codec systems. It offers both clock frequencies required
by stereo codecs such as the CS4231 and the AD1848
plus the clock needed for the OPL4 FM synthesizer. These
frequencies can be synthesized from the existing 14.318
MHz system clock or from the on-chip oscillator using a
14.318 MHz crystal (-08 only).
High accuracy, low jitter PLLs meet the 0.125% frequency
tolerance and -96dB signal-to-noise ratios required by 16
bit audio systems. Fast output clock edge rates minimize
board induced jitter.
Unlike competitive devices, the ICS9120-08 and
ICS9120-09 operate over the entire 3.0-5.5V range, with
the -09 providing power-down to minimize energy
consumption.
0065D—11/18/02
Block Diagram
14.318
Load Caps
MHz
External
Crystal
Integrated
Circuit
Systems, Inc.
X1
X2(-08)
PD(-09)
CLOCK
XTAL
OSC
GEN
PLL
•
•
•
•
•
•
•
•
•
Applications
•
Features
Generates 16.934 MHz and 24.576 MHz stereo
codec clocks plus the 33.868 MHz OPL4 clock
Single 14.318MHz crystal or system clock
reference
Buffered REFCLK output
0.125% frequency accuracy meets OPL4
specifications
100 ps one sigma jitter maintains 16 bit
performance
Output rise/fall times less than 2.0 nS
On chip loop filter components
3.3V - 5 V supply range
8 pin, 150mil SOIC package
Specifically designed to support the high
performance requirements of multimedia audio
systems.
÷2
REF (14.3MHz)
CLK1 (24.6MHz)
CLK2 (33.9MHz)
CLK3 (16.9MHz)
ICS9120-08
ICS9120-09
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ics9120-08 Summary of contents
Page 1
... Circuit Systems, Inc. Frequency Generator for Multimedia Audio Synthesis General Description The ICS9120-08 and ICS 9120-09 are high performance frequency generators designed to support stereo audio codec systems. It offers both clock frequencies required by stereo codecs such as the CS4231 and the AD1848 plus the clock needed for the OPL4 FM synthesizer. These frequencies can be synthesized from the existing 14 ...
Page 2
... Note: (Pin 8) is internally pulled- left disconnected or driven by open collector logic. Pin Descriptions for ICS9120- ...
Page 3
... ICS9120-08 ICS9120- ...
Page 4
... ICS9120-08 ICS9120-09 Electrical Characteristics at 3 +3 0-70 C unless otherwise stated ...
Page 5
... ICS9120-08 ICS9120- ...
Page 6
... ICS9120-08 ICS9120-09 Electrical Characteristics at 5 4 unless otherwise stated ...
Page 7
... N INDEX INDEX AREA AREA Ordering Information ICS9120-08CS08 Note: When ordering the -08, use ICS9120-08CS08. The example shown below for theICS9120M-09 does not apply to the -08 part. ICS9120M-09 Example: ICS XXXX M - PPP 0065D—11/18/02 C SYMBOL 45° ...