integrated circuit systems, inc. general description features ics9120-08 ics9120-09 xtal
osc x1 14.318
mhz x2(-08) pd(-09) ref (14.3mhz) clk3 (16.9mhz) clk2 (33.9mhz) clk1 (24.6mhz) pll
clock
gen external
crystal
load caps
2 frequency generator for multimedia audio synthesis 9120-08 9 12 0 - 09 rev c 052297p block diagram 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. ? 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. 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.
2 ics9120-08 ics9120-09 pin configuration pin descriptions for ics9120-08 functionality pin number pin name type description 1 x1 input crystal or external clock source. has feedback bias for crystal. 2v dd power power supply input. 3 gnd power ground return for pin 2. 4 clk3 output 16.934 mhz target output clock for stereo codec. 5 clk1 output 24.576 mhz target output clock for stereo codec. 6 clk2 output 33.868 mhz target output clock for opl4. 7 ref output 14.318 mhz reference clock buffered output. 8 x2 output crystal output drive. pin descriptions for ics9120-09 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 clk3 output 16.934 mhz target output clock for stereo codec. 5 clk1 output 24.576 mhz target output clock for stereo codec. 6 clk2 output 33.868 mhz target output clock for opl4. 7 ref output 14.318 mhz reference clock buffered output. 8 pd# input power-down input powers down entire device when low; has pull-up. note: (pin 8) is internally pulled-up to v dd and, therefore, may be left disconnected or driven by open collector logic. 8-pin soic 8-pin soic x1, x2 (mhz) (-09 only) pd# 33.9 (mhz) 16.9 (mhz) 24.6 (mhz) 14.3 (mhz) - 0 low low low low 14.318 1 33.868 16.934 24.576 14.318 -
3 ics9120-08 ics9120-09 absolute maximum ratings electrical characteristics at 3.3 v v dd = +3.0 to +3.7 v, t a = 0 to 70 o c unless otherwise stated note 1: parameter is guaranteed by design and characterization. not 100% tested in production. 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. 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 = 0 v ( for -09 only) -8.0 -3.6 - a input high current i ih v in ( for -09 only) --5.0a output low voltage v ol *i ol = 6 ma - 0.05v dd 0.1 v output high voltage v oh *i oh = -4.0 ma 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 --13.0-8.0ma supply current i cc unloaded - 13.0 32.0 ma supply current i cc(pd) unloaded ( for -09 only) - 50.0 110.0 a pull-up resistor value r pu *( for -09 only) - 620.0 900.0 k ohm
4 ics9120-08 ics9120-09 electrical characteristics at 3.3 v v dd = +3.0 to +3.7 v, t a = 0-70 o c unless otherwise stated note 1: parameter is guaranteed by design and characterization. not 100% tested in production. ac characteristics parameter symbol test conditions min typ max units rise time tr* 15pf load, 0.8 to 2.0v - 1.5 4.0 ns fall time t f * 15pf load, 2.0 to 0.8v - 1.0 3.0 ns rise time t r * 15pf load, 20% to 80% - 2.2 4.0 ns fall time t f * 15pf load, 80% to 20% - 1.5 3.0 ns duty cycle d t * 15pf load @ 50% of v dd ; except refclk 45.0 50.0 55.0 % duty cycle d t * 15pf load @ 50% of v dd ; refclk only 40.0 45.0 60.0 % jitter, one sigma t jis * for all frequencies except refclk - 150.0 200 ps jitter, absolute t jab for all frequencies except refclk -650.0 380.0 650.0 ps jitter, one sigma t jis * refclk only - 266.0 400.0 ps jitter, absolute t jab refclk only -1000 750.0 1000 ps input frequency f i * 11.0 14.3 15.0 mhz output frequency f o * 11.0 - 38.0 mhz output mean frequency accuracy vs. target f oa* with 14.318 mhz input -0.125 - -0.04 % power-up time t pu * 0 to 33.8 mhz - 5.5 12.0 ms crystal input capacitance c inx * x1 (pin 1), x2 (pin 8; -08 only ) -5-pf
5 ics9120-08 ics9120-09 electrical characteristics at 5.0 v note 1: parameter is guaranteed by design and characterization. not 100% tested in production. v dd = +4.5 to +5.5 v, t a = 0-70 o c unless otherwise stated 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 ( for -09 only ) -18.0 -8.3 - a input high current i ih v in = v dd ( for -09 only )- -5.0a output low voltage v ol *i ol = 10 ma - 0.15 0.4 v output high voltage v oh *i oh = -30 ma 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 cc unloaded - 22.0 50.0 ma supply current, power- down i cc(pd) unloaded ( for -09 only ) - 180.0 500.0 a pull-up resistor value r pu *( for -09 only ) - 400.0 800.0 k ohm
6 ics9120-08 ics9120-09 electrical characteristics at 5.0 v v dd = 4.5 - 5.5 v, t a = 0 - 70 o c unless otherwise stated note 1: parameter is guaranteed by design and characterization. not 100% tested in production. ac characteristics parameter symbol test conditions min typ max units rise time t r * 15pf load, 0.8 to 2.0v - 0.9 2.0 ns fall time t f * 15pf load, 2.0 to 0.8v - 0.7 1.5 ns rise time t r * 15pf load, 20% to 80% - 1.8 3.25 ns fall time t f * 15pf load, 80% to 20% - 1.4 2.5 ns duty cycle d t * 15pf load @ 50% of v dd ; except refclk 45.0 50.0 55.0 % duty cycle d t * 15pf load @ 50% of v dd ; refclk only 40.0 50.0 60.0 % jitter, one sigma t j1s * for all frequencies except refclk - 100.0 150.0 ps jitter, absolute t jab for all frequencies except refclk -600.0 380.0 600.0 ps jitter, one sigma t j1s * refclk only - 266.0 450.0 ps jitter, absolute t jab refclk only -1200 750.0 1200 ps input frequency range f i * 11.0 14.0 17.0 mhz output frequency range f o * 11.0 - 42.0 mhz output mean frequency accuracy vs. target foa* with 14.318 mhz input -0.125 - -0.04 % power-up time t pu * 0 to 33.8 mhz - 5.5 12.0 ms crystal input capacitance c inx * x1 (pin 1), x2 (pin 8; -08 only) - 5 - pf
7 ics9120-08 ics9120-09 ordering information ics9120m-08, ics9120m-09 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 package 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) 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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