Integrated Circuit Systems, Inc. ICS9117-01 Frequency Generator for Modem Systems General Description Features The ICS9117-01 is a low-cost, high-performance frequency generator designed to support fax/data modem systems. Datapump and UART clocks are synthesized from a microcontroller crystal using high-accuracy, low-jitter PLLs, meeting the frequency tolerance and -96dB signal-to-noise ratios required by 16-bit DSP modem systems. Fast output clock edge rates minimize board induced jitter. • Exact frequency multiplying ratios ensure better than ±80 ppm frequency accuracy using a standard AT crystal with external load capacitors (typically 33pF ±5% for an 18pF series load crystal). Achieving ±80ppm over four years requires the crystal to have 20 ppm initial accuracy, ±20 ppm temperature and ±5 ppm/year aging coefficients. • • • • • • • Generates the 14.7456 MHz microcontroller, 40.320 MHz datadump and 1.84320 UART clocks Less than ±80 ppm frequency variation including temperature, voltage, load and aging tolerances Single crystal reference minimizes crystal reliability and inventory issues 80 ps one sigma jitter maintains 16-bit performance Output rise/fall times less than 1.5 ns On-chip loop filter components 3.0 V - 5.5 V supply range 8-pin, 150-mil SOIC package Applications • Specifically designed to support the high performance of fax/data modems Block Diagram X2 14.7456 MHz X1 XTAL OSC PCLK ÷8 PD PLL CLOCK GEN UCLK MCLK Pentium is a trademark of Intel Corporation PowerPC is a trademark of Motorola Corporation 9117-01 RevA 052297P PRODUCT PREVIEW documents contain information on products in the formative or design phase development. Charactersitic data and other specifications are design goals. ICS reserves the right to change or discontinue these procucts without notice. ICS9117-01 Pin Configuration Functionality X1, X2 (MHz) 14.7456 14.7456 PD 0 1 PCLK (MHz) 14.7456 Low MCLK (MHz) 40.320 Low UCLK (MHz) 1.8432 Low 8-PIN SOIC Pin Descriptions PIN NUMBER PIN NAME TYPE 1 X2 OUT 2 X1 IN 3 4 5 6 7 8 GND PD MCLK VDD UCLK PCLK PWR IN OUT PWR OUT OUT DESCRIPTION Drive to crystal. Crystal or clock input. Power supply ground. Power-down signal. Power-down all loops and oscillators. Datapump 40.32 MHz clock output. +5V powersupply UART 1.84 MHz data clock output. Microcontroller 14.7 MHz clock output. 2 ICS9117-01 Absolute Maximum Ratings AVDD, VDD referenced to GND ----------------------------------------- 7V Operating temperature under bias ------------------------------------- 0 ºC to +70 ºC Storage temperature ------------------------------------------------------ -65 ºC to +150 ºC Voltage on I/O pins referenced to GND ------------------------------ GND - 0.5 V to VDD + 0.5 V 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 3.3V Operating VDD = +3.0 V to +3.7V; TA = 0 ºC to 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 SYMBOL VIL VIH IIL IIH VOL* VOH* IOL* IOH* ICC Rpu* TEST CONDITIONS VIN=0V VIN=VDD IOL=+10mA IOH=-10mA V=0.8V V=2.4V Unloaded MIN 2.0 2.4 20.0 - TYP -10.0 0.15 3.7 35.0 -20.0 16.0 400.0 MAX 0.8 -25.0 5.0 0.4 -10.0 30.0 800.0 UNITS V V µA µA V V mA mA mA k ohm - 0.9 1.2 1.5 3.0 10.0 ns ns ms 45.0 50.0 55.0 % 45.0 50.0 55.0 % 70.0 100.0 ps +300.0 ps -500.0 4.0 11.7 300.0 +500.0 28.0 74.0 ps ps MHz MHz -80.0 +80.0 ppm 4.5 ms AC Characteristics Rise Time Fall Time Lock Time Tr* Tf* TL* Duty Cycle Dt* Duty Cycle Dt* Jitter, One Sigmea Tj1s* Jitter, Absolute Tjab* Jitter, One Sigma Jitter, Absolute Input FrequencyRange Output Frequency Range OutputMean Frequency Accuracy vs.Target Power-up Time Tj1s* Tjab* Fi* Fo* Crystal Input Capacitance Cinx* 15o/f kiadm 0.8 to 2.0V 15pF load, 2.0 to 0.8V 15pFload, 20%to 80% 15pFload @50% of VDD; ExceptREFCLK 15pF load@50% of VDD; Except REFCLK only For all frequencies except REFCLK Forall frequencies except REFCLK REFCLK only REFCLK only Foa* With 14.318 MHzinput Tpu* 0 to 33.8 MHz X1 (Pin 1) X2 (Pin 8) -300.0 250.0 2.5 18.0 * Parameter is guaranteed by design and characterization. Not 100% tested in production. 3 pF ICS9117-01 Absolute Maximum Ratings AVDD, VDD referenced to GND ----------------------------------------- 7V Operating temperature under bias ------------------------------------- 0 ºC to +70 ºC Storage temperature ------------------------------------------------------ -65 ºC to +150 ºC Voltage on I/O pins referenced to GND ------------------------------ GND - 0.5 V to VDD + 0.5 V 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 5.0V Operating VDD = +4.5 V to +5.5V; TA = 0 ºC to 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 SYMBOL VIL VIH IIL IIH VOL* VOH* IOL* IOH* ICC Rpu* TEST CONDITIONS VIN=0V VIN=VDD IOL=+10mA IOH=-10mA V=0.8V V=2.4V Unloaded MIN 2.0 4.0 20.0 - TYP -7.0 0.15 4.2 40.0 -85.0 22.0 400.0 MAX 0.8 -25.0 5.0 0.4 -65.0 -35.0 800.0 UNITS V V µA µA V V mA mA mA k ohm - 0/8 1.2 1.5 3.0 10.0 ns ns ms 45.0 50.0 55.0 % 45.0 50.0 55.0 % 80.0 120.0 ps +300.0 ps -500.0 5.0 14.0 250.0 +500.0 43.0 114.0 ps ps MHz MHz -80.0 +80.0 ppm 4.5 ms AC Characteristics Rise Time Fall Time Lock Time Tr* Tf* TL* Duty Cycle Dt* Duty Cycle Dt* Jitter, One Sigmea Tj1s* Jitter, Absolute Tjab* Jitter, One Sigma Jitter, Absolute Input FrequencyRange Output Frequency Range OutputMean Frequency Accuracy vs.Target Power-up Time Tj1s* Tjab* Fi* Fo* Crystal Input Capacitance Cinx* 15o/f kiadm 0.8 to 2.0V 15pF load, 2.0 to 0.8V 15pFload, 20%to 80% 15pFload @50% of VDD; Except REFCLK 15pF load@50% of VDD; REFCLK only For all frequencies except REFCLK Forall frequencies except REFCLK REFCLK only REFCLK only Foa* With 14.318 MHzinput Tpu* 0 to 33.8 MHz X1 (Pin 1), X2 (Pin 8) -310.0 200.0 2.5 18.0 * Parameter is guaranteed by design and characterization. Not 100% tested in production. 4 pF ICS9117-01 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 Ordering Information ICS9117M-01 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 PRODUCT PREVIEW documents contain information on products in the formative or design phase development. Charactersitic data and other specifications are design goals. ICS reserves the right to change or discontinue these procucts without notice.