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| Integrated Circuit Systems, Inc. ICS9120-08 ICS9120-09 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. 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 Applications * Specifically designed to support the high performance requirements of multimedia audio systems. Block Diagram X1 14.318 MHz X2(-08) External Crystal Load Caps XTAL OSC REF (14.3MHz) PD(-09) CLK1 (24.6MHz) PLL CLOCK GEN /2 CLK2 (33.9MHz) CLK3 (16.9MHz) 9120-08 9120-09 Rev C 052297P 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. ICS9120-08 ICS9120-09 Pin Configuration 8-Pin SOIC Functionality X1, X2 (MHz) 14.318 (-09 only) PD# 0 1 33.9 (MHz) Low 33.868 16.9 (MHz) Low 16.934 24.6 (MHz) Low 24.576 14.3 (MHz) Low 14.318 8-Pin SOIC Note: (Pin 8) is internally pulled-up to VDD and, therefore, may be left disconnected or driven by open collector logic. Pin Descriptions for ICS9120-08 PIN NUMBER 1 2 3 4 5 6 7 8 PIN NAME X1 VDD GND CLK3 CLK1 CLK2 REF X2 TYPE Input Power Power Output Output Output Output Output DESCRIPTION Crystal or external clock source. Has feedback bias for crystal. Power supply input. Ground return for Pin 2. 16.934 MHz target output clock for stereo codec. 24.576 MHz target output clock for stereo codec. 33.868 MHz target output clock for OPL4. 14.318 MHz reference clock buffered output. Crystal output drive. Pin Descriptions for ICS9120-09 PIN NUMBER 1 2 3 4 5 6 7 8 PIN NAME X1 VDD GND CLK3 CLK1 CLK2 REF PD# TYPE Input Power Power Output Output Output Output Input DESCRIPTION External clock source. Power supply input. Ground return for Pin 2. 16.934 MHz target output clock for stereo codec. 24.576 MHz target output clock for stereo codec. 33.868 MHz target output clock for OPL4. 14.318 MHz reference clock buffered output. Power-down input powers down entire device when low; has pull-up. 2 ICS9120-08 ICS9120-09 Absolute Maximum Ratings AVDD, VDD referenced to GND ...................................................................... 7V Operating temperature under bias ................................................... 0C to +70C Storage temperature ........................................................................ -65C to +150 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 3.3 V VDD = +3.0 to +3.7 V, TA = 0 to 70 oC 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 Supply Current Pull-up Resistor Value SYMBOL VIL VIH IIL IIH VOL* VOH* IOL* IOH* ICC ICC(PD) Rpu* TEST CONDITIONS MIN 0.7VDD -8.0 0.85VDD 15.0 - TYP -3.6 0.05VDD 0.94VDD 24.0 -13.0 13.0 50.0 620.0 MAX 0.2VDD 5.0 0.1 -8.0 32.0 110.0 900.0 UNITS V V A A V V mA mA mA A k ohm VIN = 0 V (For -09 only) VIN (For -09 only) IOL = 6 mA IOH = -4.0 mA VOL = 0.2VDD VOH = 0.7VDD Unloaded Unloaded (For -09 only) (For -09 only) Note 1: Parameter is guaranteed by design and characterization. Not 100% tested in production. 3 ICS9120-08 ICS9120-09 Electrical Characteristics at 3.3 V VDD = +3.0 to +3.7 V, TA = 0-70oC unless otherwise stated AC Characteristics PARAMETER Rise Time Fall Time Rise Time Fall Time Duty Cycle Duty Cycle Jitter, One Sigma Jitter, Absolute Jitter, One Sigma Jitter, Absolute Input Frequency Output Frequency Output Mean Frequency Accuracy vs. Target Power-up Time Crystal Input Capacitance SYMBOL Tr* Tf* Tr* Tf* Dt* Dt* Tjis* Tjab Tjis* Tjab Fi* Fo* Foa* Tpu* Cinx* TEST CONDITIONS 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; Except REFCLK 15pF load @ 50% of VDD; REFCLK only For all frequencies except REFCLK For all frequencies except REFCLK REFCLK only REFCLK only MIN 45.0 40.0 -650.0 -1000 11.0 11.0 -0.125 - TYP 1.5 1.0 2.2 1.5 50.0 45.0 150.0 380.0 266.0 750.0 14.3 5.5 5 MAX 4.0 3.0 4.0 3.0 55.0 60.0 200 650.0 400.0 1000 15.0 38.0 -0.04 12.0 - UNITS ns ns ns ns % % ps ps ps ps MHz MHz % ms pF With 14.318 MHz input 0 to 33.8 MHz X1 (Pin 1), X2 (Pin 8; -08 only) Note 1: Parameter is guaranteed by design and characterization. Not 100% tested in production. 4 ICS9120-08 ICS9120-09 Electrical Characteristics at 5.0 V VDD = +4.5 to +5.5 V, TA = 0-70 oC 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 Supply Current, Powerdown Pull-up Resistor Value SYMBOL VIL VIH IIL IIH VOL* VOH* IOL* IOH* ICC ICC(PD) Rpu* TEST CONDITIONS MIN 2.0 TYP -8.3 0.15 3.7 45.0 -53.0 22.0 180.0 400.0 MAX 0.8 5.0 0.4 -35.0 50.0 500.0 800.0 UNITS V V A A V V mA mA mA A k ohm VIN = 0V (For -09 only) VIN = VDD (For -09 only) IOL = 10 mA IOH = -30 mA VOL =0.8V VOH = 2.4V Unloaded Unloaded (For -09 only) (For -09 only) -18.0 2.4 25.0 - Note 1: Parameter is guaranteed by design and characterization. Not 100% tested in production. 5 ICS9120-08 ICS9120-09 Electrical Characteristics at 5.0 V VDD = 4.5 - 5.5 V, T A = 0 - 70oC unless otherwise stated AC Characteristics PARAMETER SYMBOL Tr* Tf* Tr* Tf* Dt* Dt* Tj1s* Tjab Tj1s* Tjab Fi* Fo* Foa* Tpu* Cinx* TEST CONDITIONS 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; Except REFCLK 15pF load @ 50% of VDD; REFCLK only For all frequencies except REFCLK For all frequencies except REFCLK REFCLK only REFCLK only MIN 45.0 40.0 -600.0 -1200 11.0 11.0 TYP 0.9 0.7 1.8 1.4 50.0 50.0 100.0 380.0 266.0 750.0 14.0 5.5 5 MAX 2.0 1.5 3.25 2.5 55.0 60.0 150.0 600.0 450.0 1200 17.0 42.0 -0.04 12.0 - UNITS ns ns ns ns % % ps ps ps ps MHz MHz % ms pF Rise Time Fall Time Rise Time Fall Time Duty Cycle Duty Cycle Jitter, One Sigma Jitter, Absolute Jitter, One Sigma Jitter, Absolute Input Frequency Range Output Frequency Range Output Mean Frequency Accuracy vs. Target Power-up Time Crystal Input Capacitance With 14.318 MHz input 0 to 33.8 MHz X1 (Pin 1), X2 (Pin 8; -08 only) -0.125 - Note 1: Parameter is guaranteed by design and characterization. Not 100% tested in production. 6 ICS9120-08 ICS9120-09 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-08, ICS9120M-09 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 7 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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