ICS9120-56 Integrated Circuit Systems, Inc. Frequency Timing Generator for EtherNet & Hard Drives General Description The ICS9120-56 is a high performance frequency generator designed to support hard disk drive and EtherNet systems. It offers all clock frequencies required for the servo and decoder sections of these devices. These frequencies are synthesized from a single 25.00 MHz on-chip oscillator. Features • • • • • • Single 25.00 MHz crystal or system clock reference 100ps 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 High accuracy, low jitter PLLs meet the 100 ppm frequency tolerance required by these systems. Fast output clock edge rates minimize board induced jitter. Applications • Specifically designed to support the high performance requirements of high speed EtherNet systems using 10Base-T/100Base-TX Integrataed PHYceiver. • Designed to support the requirements for high performance hard drives. Pin Configuration 8-Pin SOIC Block Diagram 9120-56 Rev A 040697P ICS9120-56 Pin Descriptions for ICS9120-56 PIN NUMBER PIN NAME 1 X1 2 3 4 5 6 7 8 VDD GND CLK1 CLK2 CLK3 REF X2 TYPE Input Power Power Output Output Output Output Output DESCRIPTION Crystal or external clock source. Has feedback bias for crystal, and internal crystal load capacitors to GND. +Power supply input. Ground return for Pin 2. 40.00 M Hz clock output. 22.5 MHz output clock. 20.00 M Hz output clock. Reference clock Crystal output drive, includes internal crystal load capacitor to GND. 2 ICS9120-56 Absolute Maximum Ratings Supply Voltage .......................................................................................................... 7.0 V Logic Inputs ....................................................................... GND –0.5 V to VDD +0.5 V Ambient Operating Temperature ............................................................. 0°C to +70°C Storage Temperature ........................................................................... –65°C to +150°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only and functional operation of the device at these or any other conditions above those listed 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 3.3 V VDD = +3.0 to +3.7 V, TA = 0OC-70 oC unless otherwise stated DC Characteristics PARAMETER SYMBOL Input Low Voltage1, X12 Input High Voltage1, X12 Output Low Voltage Output High Voltage VIL VIH VOL VOH Output Low Current Output High Current IOL IOH Supply Current IDD Rise Time1 Fall Time1 Tr Tf Duty Cycle1 Dt Duty Cycle1 Dt Jitter, One Sigma1 Tjis Jitter Absolute1 Tjab TEST CONDITIONS MIN TYP MAX UNITS 0.8 -8.0 30.0 V V V V mA mA mA 0.8 2.3 1.5 ns ns 45 50 55 % 55 6 65 % 120 200 ps 310 500 ps 0.9 3 % 1.9 4 30 48 % MHz MHz 0 100 ppm 7 10 ms 2.0 IOL=6.0mA IOH=4.0mA VOL=0.2VDD VOH=0.7VDD Unloaded VDD 5.5V 0.85VDD 15.0 0.05VDD 0.94VDD 24 -13 16 0.1VDD AC Characteristics Jitter, One Sigma 1 Tjis 1 Jitter Absolute Input Frequency1 Output Frequency Range1 Output Mean Frequency1 Accuracy vs. Target Power-up Time1,3 Crystal Input Capacitance 1 15pF load 0.8 to 2.0V 15pF load 2.0 to 0.8V 15pF load @ 1.5V V DD Except REFCLK 15pF load @ 1.5V V DD Except REFCLK For all frequencies except REFCLK For all frequencies except REFCLK REFCLK only Tjab FI Fo REFCLK only Foa With 25.00MHz input Tpu 0 to 40.0 MHz/1ms Ramp. X1 (Pin 1), X2 (Pin 8) Cinx -500 1 1.6 -100 16 1: Parameter is guaranteed by design and characterization. Not 100% tested in production. 2: For direct drive of X1 input. 3. 1ms Ramp @ 1.4V to 1 st crossing. 3 pF ICS9120-56 Electrical Characteristics at 5.0 V VDD = +4.5 to 5.5 V, TA = 0OC-70oC unless otherwise stated DC Characteristics PARAMETER 1 SYMBOL 2 Input Low Voltage , X1 Input High Voltage1, X12 Output Low Voltage Output High Voltage Output Low Current Output High Current Supply Current VIL VIH VOL VOH IOL IOH IDD TEST CONDITIONS MIN TYP MAX UNITS 0.8 V V V V mA mA mA 2.0 IOL=10mA IOH=-30mA VOL=0.8 VOH=2.4 Unloaded VDD 5.5V 0.15 3.7 45 -53 25 -35 50 0.7 0.5 2.0 1.4 1.5 1.5 4.0 4.0 ns ns 45 51 55 % 55 62 65 % 50 100 ps 200 400 ps 1.2 2.2 4 5 50 80 % % MHz MHz 0 100 ppm 6 10 ms 2.4 25 0.4 AC Characteristics Rise Time1 Fall Time1 Rise Time1 Fall Time1 Tr Tf Tr Tf Duty Cycle1 Dt Duty Cycle1 Dt Jitter, One Sigma1 Tjis Jitter Absolute1 Tjab Jitter, One Sigma 1 1 Jitter Absolute Input Frequency1 Output Frequency Range1 Output Mean Frequency1 Accuracy vs. Target Tjis Tjab FI Fo Foa Power-up Time1,3 Tpu Crystal Input Capacitance1 Cinx 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 @ 1.4V REFCLK 15pF load @ 1.4V REFCLK For all frequencies except REFCLK For all frequencies except REFCLK REFCLK only REFCLK only -400 1 1.6 With 25.00MHz input 0 to 40.0 MHz; 1ms Ramp. X1 (Pin 1), X2 (Pin 8) -100 16 1: Parameter is guaranteed by design and characterization. Not 100% tested in production. 2: For direct drive of X1 input. 3. 1ms Ramp @ 1.4V to 1st crossing. 4 pF ICS9120-56 0.154 0.031 0.194 0.063 0.015 0.024 0.008 0.025 0.016 0.050 0.006 ± 0.004 0.238 8-Pin SOIC Package Ordering Information ICS9120M-56 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