integrated circuit systems, inc. general description features ics9120-11 the ics9120-11 is a high performance frequency generator. the ics9120-11 provides high accuracy; low jitter plls meet the 0.20% frequency tolerance and -96db signal-to- noise ratios. fast output clock edge rates minimize board induced jitter. the ics9120-11 operates over the entire 3.0 - 5.5v range and provides power-down to minimize energy consumption. ? generates 46.6 mhz and 33.868 mhz clocks ? buffered refclk output ? 0.20% frequency accuracy ? 100ps one sigma jitter maintains 16-bit performance ? output rise/fall times less than 2.5ns ? on-chip loop filter components ? 3.0v - 5.5v supply range ? 8-pin, 150-mil soic package advance information 9120-1 1 rev b 012197 block diagram frequency generator for multimedia audio synthesis x1 (mhz) pd# 33.9 (mhz) 46.6 (mhz) 14.3 (mhz) - 0 low low low 14.318 1 33.868 46.6 14.318 functionality note: pd# (pin 8) and oe (pin 4) are internally pulled-up to vdd and therefore may be left disconnected or driven by open collector logic. pin configuration 8-pin soic
2 ics9120-11 pin descriptions for ics9120-11 * pin 1 contains no loading capacitor. pin number pin name type description 1 x1 input external clock source.* 2 vdd power +power supply input. 3 gnd power ground return for pin 2. 4 oe input output enable (tristates all outputs when at logic low level); has pull-up. 5 clk1 input 46.6 mhz clock output. 6 clk2 output 33.9 mhz clock output. 7 ref output 14.318 mhz reference clock output. 8 pd# input power-down input (powers-down entire device when low); has pull-up.
3 ics9120-11 absolute maximum ratings avdd, vdd referenced to gnd ......................................................................................................................................... 7v operating temperature under bias ....................................................................................................................... 0c to +70c storage temperature ......................................................................................................................................... -65c to +150c 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 de vice. 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 5v opera ting v dd = +4.5v to +5.5v; t a =0c to 70c 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 -18.0-8.3-a input high current i ih v in =v dd - - 5.0 a 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 - 23.0 50.0 ma supply current, power-down i dd (pd) unloaded - 250.0 500.0 a pull-up resistor valve r pu * - 400.0 800.0 k ohm ac characteristics rise time 0.8 to 2.0v t r * 15pf load - 0.9 2.0 ns fall time 2.0 to 0.8v t f * 15pf load - 0.7 1.5 ns rise time 20% to 80% t r * 15pf load - 1.8 3.25 ns fall time 80% to 20% t f * 15pf load - 1.4 2.5 ns duty cycle d t * 15pf load @ 50% of vdd; except refclk 45.0 50.0 55.0 % duty cycle d t * 15pf load @ 50% of vdd; refclk only 40.0 53.0 60.0 % jitter, one sigma t jis * for all frequencies except refclk - 100.0 150.0 ps jitter, absolute t jab * for all frequencies except refclk -550.0 330.0 550.0 ps jitter, one sigma t jis * refclk only - 350.0 500.0 ps jitter, absolute t jab * refclk only -1200 750.0 1200 ps input frequency f i * 11.0 14.0 17.0 mhz output frequency f o * 11.0 - 42.0 mhz power-up time t pu * 0 to 33.8 mhz - 5.5 12.0 ms crystal input capacitance c inx * x1 (pin 1) - 5 - pf
4 ics9120-11 electrical characteristics at 3.3v opera ting v dd = +3.0v to +3.7v; t a =0c to 70c 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 - - 0.2v dd v input high voltage v ih 0.7v dd --v input low current i il v in =0v -8.0 -3.6 - a input high current i ih v in =v dd - - 5.0 a output low voltage v ol *i ol =6ma - 0.05v dd 0.1 v output high voltage v oh *i oh =-4.0ma 0.85v dd 0.94v dd -v output low current i ol *v ol =0.2v dd 15.0 24.0 - ma output high current i oh *v oh =0.7v dd - -13.0 -8.0 ma supply current i dd unloaded - 14.0 32.0 ma supply current, power-down i dd (pd) unloaded - 60.0 110.0 a pull-up resistor valve r pu * - 620.0 900.0 k ohm ac characteristics rise time 0.8 to 2.0v t r * 15pf load - 1.5 4.0 ns fall time 2.0 to 0.8v t f * 15pf load - 1.0 3.0 ns rise time 20% to 80% t r * 15pf load - 2.2 4.0 ns fall time 80% to 20% t f * 15pf load - 1.5 3.0 ns duty cycle d t * 15pf load @ 50% of vdd; refclk only 45.0 50.0 55.0 % duty cycle d t * 15pf load @ 50% of vdd; except refclk 40.0 45.0 60.0 % jitter, one sigma t jis * for all frequencies except refclk - 140.0 200.0 ps jitter, absolute t jab * for all frequencies except refclk -600.0 420.0 600.0 ps jitter, one sigma t jis * refclk only - 230.0 400.0 ps jitter, absolute t jab * refclk only -1000 600 1000 ps input frequency f i * 11.0 14.3 15.0 mhz output frequency f o * 11.0 - 38.0 mhz power-up time t pu * 0 to 33.8 mhz - 5.5 12.0 ms crystal input capacitance c inx * x1 (pin 1) - 5 - pf
5 ics9120-11 8-pin soic package 0.194 0.063 0.031 0.238 0.154 0.025 0.015 0.008 0.024 0.016 0.050 0.006 0.004 ordering information ics9120m-11 example: xxx xxxx m-ppp package type n=dip (plastic) 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 patterns)
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