ics9120-52 ETC-unknow, ics9120-52 Datasheet

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ics9120-52

Manufacturer Part Number
ics9120-52
Description
Frequency Generator Cd-rom Systems
Manufacturer
ETC-unknow
Datasheet
Frequency Generator for CD-ROM Systems
Block Diagram
Functionality
General Description
The ICS9120-52 is a high performance frequency generator
designed to support digital compact disk drive systems. It
offers all clock frequencies required for the servo and
decoder sections of these devices. These frequencies are
synthesized from a single 16.9344 MHz on-chip oscillator.
High accuracy, low jitter PLLs meet the 150 ppm frequency
tolerance required by these systems. Fast output clock
edge rates minimize board induced jitter.
Unlike competitive devices, the ICS9120-52 operates over
the entire 3.0-5.5V range.
86.4672
X 1, X 2
(M Hz)
8.4672
9120-52 Rev B 052497P
C lock
20M
40M
X 1, X 2
(M Hz)
8.4672
8.4672
Integrated
Circuit
Systems, Inc.
FS
0
1
X52÷11÷2
X52÷11
D ivisor
D ivisor
X12÷3
X61÷6
20.0134
40.0268
33.8688
O utput
(M Hz)
C LK 1
42.83
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.
Applications
Features
Generates 33.8688 MHz or 42.83 MHz decode clocks
plus the 20 and 40 MHz fixed clocks
Single 8.4672 MHz crystal or system clock reference
200ps one sigma jitter maintains 16-bit performance
Output rise/fall times less than 2.0ns
On-chip loop filter components
3.3V-5V supply range
8-pin, 150-mil SOIC
Specifically designed to support the high performance
requirements of CD-ROM drive systems
Pin Configuration
8-Pin SOIC
ICS9120-52

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ics9120-52 Summary of contents

Page 1

... Circuit Systems, Inc. Frequency Generator for CD-ROM Systems General Description The ICS9120- high performance frequency generator designed to support digital compact disk drive systems. It offers all clock frequencies required for the servo and decoder sections of these devices. These frequencies are synthesized from a single 16.9344 MHz on-chip oscillator. ...

Page 2

... ICS9120-52 Pin Descriptions PIN PIN TYPE NUMBER NAME 1 X1 Input 2 VDD Power 3 GND Power 4 20M Output 5 CLK1 Output 6 40M Output 7 FS Input 8 X2 Output DESCRIPTION Crystal or external clock source. Has feedback bias for crystal. +Power supply input. Ground return for Pin 2. ...

Page 3

... For all frequencies j1s * For all frequencies jab With 8.4672 M Hz input 33 (Pin 1), X2 (Pin 8) inx 3 ICS9120- TYP 0.8 2 -18.0 -8 5.0 - 0.15 0.4 2.4 3.7 - 25.0 45 -53.0 -35 ...

Page 4

... ICS9120-52 Electrical Characteristics at 3 +3 PARAMETER SYMBOL Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage V Output High Voltage V Output Low Current I Output High Current I Supply Current Pull-up Resistor Value R Rise Time ...

Page 5

... ICS reserves the right to make changes in the device data identified in this publication 5 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. ICS9120-52 0.015 0.025 ...

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