Integrated Circuit Systems, Inc. ICS9120-52 Frequency Generator for CD-ROM Systems General Description Features 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. • • • • • • • Applications • Functionality X 1, X 2 (M Hz) FS D ivisor C LK 1 8.4672 0 X12÷3 33.8688 86.4672 1 X61÷6 42.83 C lock X 1, X 2 (M Hz) D ivisor O utput (M Hz) 20M 8.4672 X52÷11÷2 20.0134 40M 8.4672 X52÷11 40.0268 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 Block Diagram 9120-52 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. ICS9120-52 Pin Descriptions PIN NUMBER 1 2 3 PIN NAME X1 VDD GND 4 5 6 7 8 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. 20 MHz fixed output clock. 33.8/42.83 MHz selectable clock output. 40 MHz fixedoutput clock. Input selector for CLK1. Crystal output drive. 2 ICS9120-52 Absolute Maximum Ratings AVDD, VDD referenced to GND ...........................................................................7V Operating temperature under bias ...................................................... 0oC to +70oC Storage temperature ....................................................................... -65oC to +150oC 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, T A = 0 to 70oC unless otherwise stated DC Characteristics PARAM ETER SYM BOL Input Low Voltage V IL Input High Voltage V IH Input Low Current I IL TEST CONDITIONS M IN TYP M AX UNITS - - 0.8 V 2.0 - - V V IN=0V -18.0 -8.3 - µA µA Input High Current I IH V IN =V DD - - 5.0 Output Low Voltage V OL * I OL =+10mA - 0.15 0.4 V Output High Voltage V OH * I OH =-30mA 2.4 3.7 - V Output Low Current I OL * V OL =0.8V 25.0 45.0 - mA Output High Current I OH* V OH=2.4V - -53.0 -35.0 mA Supply Current I DD Unloaded - 26.0 50.0 mA - 400.0 800.0 k ohm Pull-up Resistor Value R PU* AC Characteristics Rise Time T r* 15pF load, 0.8 to 2.0V - 0.9 2.0 ns Fall Time T f* 15pF load, 2.0 to 0.8V - 0.7 1.5 ns Rise Time T r* 15pF load, 20% to 80% - 1.8 3.25 ns Fall Time T f* 15pF load, 80% to 20% - 1.4 2.5 ns Duty Cycle D t* 15pF load @ 50% of V DD 45.0 50.0 55.0 % Jitter, One Sigma T j1s* For all frequencies - 100.0 200.0 ps Jitter, Absolute T jab* For all frequencies -500.0 300.0 500.0 ps Input Frequency Range F i* 8.0 8.4 100.0 M Hz Output Frequency Range F o* 11.0 - 42.0 M Hz Output M ean Frequency Accuracy vs. Target F oa * With 8.4672 M Hz input -0.125 - -0.04 % Power-up Time T pu * 0 to 33.8 M Hz - 5.5 12.0 ms Crystal Input Capacitance C inx* X1 (Pin 1), X2 (Pin 8) -5 - - *Parameter is guaranteed by design and characterization. Not 100% tested in production. 3 pF ICS9120-52 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 SYMBOL V IL V IH IIL TEST CONDITIONS V IN=0V MIN 0.7V DD -8.0 TYP -3.6 MAX 0.2V DD - UNITS V V µA Input High Current Output Low Voltage Output High Voltage Output Low Current IIH V OL * V OH * IOL * V IN=V DD IOL =6.0mA IOH=4.0mA V OL =0.2V DD 0.85V DD 15.0 0.05V DD 0.94V DD 24.0 5.0 0.1 - µA V V mA Output High Current Supply Current Pull-up Resistor Value IOH* IDD R PU* V OH=0.7V DD Unloaded - -13.0 17.0 620.0 -8.0 40.0 900.0 mA mA k ohm AC Characteristics Rise Time T r* 15pF load 0.8 to 2.0V - 1.5 4.0 ns Fall Time Rise Time Fall Time T f* T r* T f* - 1.0 2.2 1.5 3.0 4.0 3.0 ns ns ns Duty Cycle D t* 45.0 50.0 55.0 % Jitter, One Sigma T j1s* - 150.0 200 ps Jitter Absolute T jab* 15pF load 2.0 to 0.8V 15pF load 20% to 80% 15pF load 80% to 20% 15pF load @ 50% of V DD; Except REFCLK For all frequencies except REFCLK For all frequencies except REFCLK -550.0 330.0 550.0 ps Input Frequency Range Output Frequency Range Output Mean Frequency Accuracy vs. Target Power-up Time Fi* F o* 8.0 11.0 8.4 - 10.0 38.0 MHz MHz -0.125 - -0.04 % - 5.5 12.0 ms - 5 - pF Crystal Input Capacitance F oa * With 8.4672 MHz input T pu * 0 to 33.8 M Hz X1 (Pin 1), X2 (Pin 8) C inx* *Parameter is guaranteed by design and characterization. Not 100% tested in production. 4 ICS9120-52 0.154 0.031 0.194 0.063 0.015 0.024 0.008 0.025 0.016 0.238 0.050 0.006 ± 0.004 8-Pin SOIC Package Ordering Information ICS9120M-52 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.