integrated circuit systems, inc. general description features xtal
osc pclk uclk mclk pll
clock
gen 8 x2 14.7456
mhz x1 pd ? 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 9117-01 reva 052297p pentium is a trademark of intel corporation powerpc is a trademark of motorola corporation frequency generator for modem systems ics9117-01 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 ca pacitors (typically 33pf 5% for an 18pf series load cr ystal). achie ving 80ppm over four years requires the crystal to have 20 ppm initial accuracy, 20 ppm temperature and 5 ppm/year aging coefficients. block diagram 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.
2 ics9117-01 pin configuration pin descriptions functionality x1, x2 (mhz) pd pclk (mhz) mclk (mhz) uclk (mhz) 14.7456 0 14.7456 40.320 1.8432 14.7456 1 low low low pin number pin name type description 1 x2 out drive to crystal. 2 x1 in crystal or clock input. 3 gnd pwr power supply ground. 4 pd in power-down signal. power-down all loops and oscillators. 5 mclk out datapump 40.32 mhz clock output. 6 vdd pwr +5v powersupply 7 uclk out uart 1.84 mhz data clock output. 8 pclk out microcontroller 14.7 mhz clock output. 8-pin soic
3 ics9117-01 absolute maximum ratings electrical characteristics at 3.3v 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. av dd , v dd 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 v dd + 0.5 v power dissipation --------------------------------------------------------- 0.5 watts opera ting v dd = +3.0 v to +3.7v; t a = 0 oc to 70 o c unless otherwise stated * parameter is guaranteed by design and characterization. not 100% tested in production. dc characteristics parameter symbol test conditions min typ max units input low voltage v il --0.8v input high voltage v ih 2.0 - - v input low current i il v in =0v - -10.0 -25.0 m a input high current i ih v in =v dd - - 5.0 m a output low voltage v ol *i ol =+10ma - 0.15 0.4 v output high voltage v oh *i oh =-10ma 2.4 3.7 - v output low current i ol * v=0.8v 20.0 35.0 - ma output high current i oh * v=2.4v - -20.0 -10.0 ma supply current i cc unloaded - 16.0 30.0 ma pull-up resistor value r pu * - 400.0 800.0 k ohm ac characteristics rise time t r * 15o/f kiadm 0.8 to 2.0v - 0.9 1.5 ns fall time t f * 15pf load, 2.0 to 0.8v - 1.2 3.0 ns lock time t l * 15pfload, 20%to 80% 10.0 ms duty cycle d t * 15pfload @50% of vdd; exceptrefclk 45.0 50.0 55.0 % duty cycle d t * 15pf load@50% of vdd; except refclk only 45.0 50.0 55.0 % jitter, one sigmea t j1s * for all frequencies except refclk 70.0 100.0 ps jitter, absolute t jab * forall frequencies except refclk -300.0 +300.0 ps jitter, one sigma t j1s * refclk only 250.0 300.0 ps jitter, absolute t jab * refclk only -500.0 +500.0 ps input frequencyrange f i * 4.0 28.0 mhz output frequency range f o * 11.7 74.0 mhz outputmean frequency accuracy vs.target f oa * with 14.318 mhzinput -80.0 +80.0 ppm power-up time t pu * 0 to 33.8 mhz 2.5 4.5 ms crystal input capacitance c inx * x1 (pin 1) x2 (pin 8) 18.0 pf
4 ics9117-01 absolute maximum ratings electrical characteristics at 5.0v 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. opera ting v dd = +4.5 v to +5.5v; t a = 0 oc to 70 o c unless otherwise stated av dd , v dd 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 v dd + 0.5 v power dissipation --------------------------------------------------------- 0.5 watts dc characteristics parameter symbol test conditions min typ max units input low voltage v il --0.8v input high voltage v ih 2.0 - - v input low current i il v in =0v - -7.0 -25.0 m a input high current i ih v in =v dd - - 5.0 m a output low voltage v ol *i ol =+10ma - 0.15 0.4 v output high voltage v oh *i oh =-10ma 4.0 4.2 - v output low current i ol * v=0.8v 20.0 40.0 - ma output high current i oh * v=2.4v - -85.0 -65.0 ma supply current i cc unloaded - 22.0 -35.0 ma pull-up resistor value r pu * - 400.0 800.0 k ohm ac characteristics rise time t r * 15o/f kiadm 0.8 to 2.0v - 0/8 1.5 ns fall time t f * 15pf load, 2.0 to 0.8v - 1.2 3.0 ns lock time t l * 15pfload, 20%to 80% 10.0 ms duty cycle d t * 15pfload @50% of vdd; except refclk 45.0 50.0 55.0 % duty cycle d t * 15pf load@50% of vdd; refclk only 45.0 50.0 55.0 % jitter, one sigmea t j1s * for all frequencies except refclk 80.0 120.0 ps jitter, absolute t jab * forall frequencies except refclk -310.0 +300.0 ps jitter, one sigma t j1s * refclk only 200.0 250.0 ps jitter, absolute t jab * refclk only -500.0 +500.0 ps input frequencyrange f i * 5.0 43.0 mhz output frequency range f o * 14.0 114.0 mhz outputmean frequency accuracy vs.target f oa * with 14.318 mhzinput -80.0 +80.0 ppm power-up time t pu * 0 to 33.8 mhz 2.5 4.5 ms crystal input capacitance c inx * x1 (pin 1), x2 (pin 8) 18.0 pf * parameter is guaranteed by design and characterization. not 100% tested in production.
5 ics9117-01 ordering information ics9117m-01 0.194 0.031 0.024 0.016 0.050 0.006
0.004 0.238 0.154 0.015 0.063 0.025 0.008 8-pin soic example:
ics xxxx m-ppp package type
m =soic device type (consists of 3 or 4-digit numbers) prefix
ics, av=standard device pattern number (2 or 3-digit number for parts with rom code pattern) 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.
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