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| Integrated Circuit Systems, Inc. ICS9120-53 Frequency Generator for CD-ROM Systems General Description The ICS9120-53 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 ICS9120-53 operates over the entire 3.0-5.5V range. Features * * * * * * * Generates 33.8688 MHz or 42.83 MHz decode clocks plus the 12 and 24 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 Applications * Specifically designed to support the high performance requirements of CD-ROM drive systems Functionality X 1, X 2 (M Hz) FS D ivisor C LK 1 8.4672 86.4672 C lock 0 1 X 1, X 2 (M Hz) X12/3 X61/6 D ivisor 33.8688 42.83 O utput (M Hz) Pin Configuration 12M 24M 8.4672 8.4672 X52/11/2 X52/11 20.0134 40.0268 Block Diagram 8-Pin SOIC 9120-53 Rev B 052497P 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. ICS9120-53 Pin Descriptions PIN NUMBER 1 2 3 4 5 6 7 8 PIN NAME X1 VDD GND 20M CLK1 40M FS X2 TYPE Input Power Power Output Output Output Input Output DESCRIPTION Crystal or external clock source. Has feedback bias for crystal. +Power supply input. Ground return for Pin 2. 12 MHz fixed output clock. 33.8/42.83 MHz selectable clock output. 24 MHz fixedoutput clock. Input selector for CLK1. Crystal output drive. 2 ICS9120-53 Absolute Maximum Ratings AVDD, VDD referenced to GND .......................................................................... 7V Operating temperature under bias .................................................... 0 oC to +70oC Storage temperature ..................................................................... -65oC to +150 oC Voltage on I/O pins referenced to GND ...................... GND -0.5V to VDD +0.5V Power dissipation ...................................................................................... 0.5 Watts Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. Electrical Characteristics at 5 V VDD = +4.5 to +5.5 V, TA = 0 to 70oC unless otherwise stated DC Characteristics PARAM ETER Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage Output High Voltage Output Low Current Output High Current Supply Current Pull-up Resistor Value SYM BOL VIL VIH IIL IIH VOL* VOH* I OL* I OH* IDD RPU* AC Characteristics Rise Time Fall Time Rise Time Fall Time Duty Cycle Jitter, One Sigma Jitter, Absolute Jitter, One Sigma Jitter, Absolute Input Frequency Range Output Frequency Range Output M ean Frequency Accuracy vs. Target Power-up Time Crystal Input Capacitance Tr* Tf* Tr* Tf* Dt* Tjis* Tjab* Tjis* Tjab* Fi* Fo* Foa* Tpu* Cinx* With 8.4672 M Hz input 0 to 33.8 M Hz X1 (Pin 1), X2 (Pin 8) 15pF load, 0.8 to 2.0V 15pF load, 2.0 to 0.8V 15pF load, 20% to 80% 15pF load, 80% to 20% 15pF load @ 50% of VDD For all frequencies For all frequencies REFCLK only REFCLK only 45.0 -500.0 -1200 8.0 11.0 -0.125 -5 0.9 0.7 1.8 1.4 50.0 100.0 300.0 266.0 750.0 8.4 5.5 5 2.0 1.5 3.25 2.5 55.0 200.0 500.0 450.0 1200 10.0 42.0 -0.04 12.0 ns ns ns ns % ps ps ps ps M Hz M Hz % ms pF VIN=0V VIN=VDD IOL=+10mA IOH=-30mA V OL=0.8V VOH=2.4V Unloaded TEST CONDITIONS M IN 2.0 -18.0 2.4 25.0 TYP -8.3 0.15 3.7 45.0 -53.0 24.0 400.0 M AX 0.8 5.0 0.4 -35.0 50.0 800.0 UNITS V V A A V V mA mA mA k ohm *Parameter is guaranteed by design and characterization. Not 100% tested in production. 3 ICS9120-53 Electrical Characteristics at 3.3 V VDD = +3.0 to +3.7 V, TA = 0OC-70oC unless otherwise stated DC Characteristics PARAMETER Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage Output High Voltage Output Low Current Output High Current Supply Current Pull-up Resistor Value Rise Time Fall Time Rise Time Fall Time Duty Cycle Jitter, One Sigma Jitter Absolute Input Frequency Range Output Frequency Range Output Mean Frequency Accuracy vs. Target Power-up Time Crystal Input Capacitance SYMBOL VIL VIH IIL IIH VOL* VOH* IOL* IOH* IDD RPU* Tr* Tf* Tr* Tf* Dt* Tjis* Tjab* Fi* Fo* Foa* Tpu* Cinx* TEST CONDITIONS VIN=0V VIN=VDD IOL=6.0mA IOH=4.0mA VOL=0.2VDD VOH=0.7VDD Unloaded AC Characteristics MIN 0.7VDD -8.0 0.85VDD 15.0 45.0 -550.0 8.0 11.0 -0.125 - TYP -3.6 0.05VDD 0.94VDD 24.0 -13.0 16.0 620.0 1.5 1.0 2.2 1.5 50.0 150.0 330.0 8.4 5.5 5 MAX 0.2VDD 5.0 0.1 -8.0 40.0 900.0 4.0 3.0 4.0 3.0 55.0 200 550.0 10.0 38.0 -0.04 12.0 - UNITS V V A A V V mA mA mA k ohm ns ns ns ns % ps ps MHz MHz % ms pF 15pF 15pF 15pF 15pF load load load load 0.8 to 2.0V 2.0 to 0.8V 20% to 80% 80% to 20% 15pF load @ 50% ofVDD For all frequencies For all frequencies With 8.4672 MHz input 0 to 33.8 MHz X1 (Pin 1), X2 (Pin 8) *Parameter is guaranteed by design and characterization. Not 100% tested in production. 4 ICS9120-53 0.154 0.031 0.024 0.008 0.194 0.063 0.015 0.016 0.050 0.006 0.004 0.238 0.025 8-Pin SOIC Package Ordering Information ICS9120M-53 Example: ICS XXXX M-PPP Pattern Number (2 or 3-digit number for parts with ROM code pattern) Package Type M =SOIC Device Type (consists of 3 or 4-digit numbers) Prefix ICS, AV=Standard Device 5 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. |
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