datasheet ntsc/pal audio clock confidential ics662-02 idt? / ics? ntsc/pal audio clock 1 ics662-02 rev a 100803 description the ics662-02 is a low cost, low jitter, high performance pll clock synthesizer designed to replace oscillators and pll circuits in set-top box and multimedia systems. using ics? patented analog phase locked loop (pll) techniques, the device uses a ntsc/pal reference clock input to produce a selectable audio clock. ics manufactures the largest variety of set-top box and multimedia clock synthesizers for all applications. consult ics to eliminate vcxos, crystal s and oscillators from your board. features ? packaged in 8 pin soic ? locks to ntsc and pal colorburst frequencies (4x) ? audio sampling rate outputs ? low synthesis error in all clocks ? all frequencies are frequency locked ? advanced, low power, sub-micron cmos process ? operating voltage of 3.3 v block diagram audio clock pll clock synthesis and control circuitry vdd s2:0 gnd 3 ref clk oe/pd
ics662-02 ntsc/pal audio clock clock synthesizer idt? / ics? ntsc/pal audio clock 2 ics662-02 rev a 100803 pin assignment 8 pin (150 mil) soic c lock o utput s elect t able * -0.16 ppm compared to pal specification pin descriptions ref vdd gnd oe/pd s2 s1 clk s0 1 2 3 4 8 7 6 5 s2 s1 s0 input frequency output frequency video std. 0 0 0 14.31818 8.192 ntsc 0 0 1 14.31818 11.2896 ntsc 0 1 0 14.31818 12.288 ntsc 0 1 1 14.31818 24.576 ntsc 1 0 0 17.73447205* 8.192 pal 1 0 1 17.73447205* 11.2896 pal 1 1 0 17.73447205* 12.288 pal 1 1 1 17.73447205* 24.576 pal pin number pin name pin type pin description 1 ref input reference clock input. 2 vdd power connect to +3.3 v. 3 gnd power connect to ground. 4 s2 input output frequency selection pin 2. determines output frequency as per table above. 5 clk output clock output per table above. 6 s1 input output frequency selection pin 1. determines output frequency as per table above. 7 oe/pd input output enable. powers down pll and tri-states output with weak pull-down when low. 8 s0 input output frequency selection pin 0. determines output frequency as per table above.
ics662-02 ntsc/pal audio clock clock synthesizer idt? / ics? ntsc/pal audio clock 3 ics662-02 rev a 100803 external components decoupling capacitor as with any high performance mixed-signal ic, the ics662-02 must be isolated from system power supply noise to perform optimally. a decoupling capacitor of 0.01f must be connected between vdd and gnd on pins 2 and 3. it must be connected close to the ics662-02 to minimize lead inductance. no external power supply filtering is required for the ics662-02. series termination resistor a 33 ? terminating resistor can be used next to the clock outputs for trace lengths over one inch. absolute maximum ratings stresses above the ratings listed below can cause permanent damage to the ics662-02. these ratings, which are standard values for ics commercially rated parts, are stress ratings only. 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 exte nded periods can affect product reliability. electrical parameters are guaranteed only over the recommended operating temperature range. recommended operation conditions item rating supply voltage, vdd -0.5 v to 4 v all inputs and outputs -0.5 v to vdd+0.5 v ambient operating temperature 0 to +70 c storage temperature -65 to +150 c soldering temperature 260 c parameter min. typ. max. units ambient operating temperature 0 +70 c power supply voltage (measured in respect to gnd) +3.0 +3.6 v
ics662-02 ntsc/pal audio clock clock synthesizer idt? / ics? ntsc/pal audio clock 4 ics662-02 rev a 100803 dc electrical characteristics vdd=3.3 v 10% , ambient temperature 0 to +70 c, unless stated otherwise parameter symbol conditions min. typ. max. units operating voltage vdd 3.0 3.6 v supply current idd no load, oe/pd =1, first 4 modes 20 ma no load, oe/pd =1, last 4 modes 25 ma iddpd no load, oe/pdts =0 125 a input high voltage v ih oe/pd pin only vdd - 0.5 v input low voltage v il oe/pd pin only 0.5 v input high voltage v ih s2:s0, ref pins 2.0 v input low voltage v il s2:s0, ref pins 0.8 v output high voltage v oh i oh = -12 ma 2.4 v output low voltage v ol i ol = 12 ma 0.4 v output high voltage, cmos level v oh i oh = -4 ma vdd-0.4 v short circuit current i os clk outputs + 50 ma input capacitance c in 5pf nominal output impedance z out 20 ? internal pull-up resistor r pu s2 pin 510 k ? s1, s0 oe/pd 120 k ? internal pull-down resistor r pd clk pin 240 k ?
ics662-02 ntsc/pal audio clock clock synthesizer idt? / ics? ntsc/pal audio clock 5 ics662-02 rev a 100803 ac electrical characteristics vdd = 3.3 v 10% , ambient temperature 0 to +70 c, unless stated otherwise note 1: measured with 15 pf load. thermal characteristics parameter symbol conditions min. typ. max. units input crystal or clock frequency f in 10 20 mhz frequency synthesis error ntsc clocks 0 ppm pal clocks -0.16 ppm output clock rise time t or 20% to 80%, note 1 1.5 ns output clock fall time t of 80% to 20%, note 1 1.5 ns output clock duty cycle at vdd/2, note 1 45 55 % maximum absolute jitter, short term deviation from mean, note 1 100 ps maximum absolute jitter, long term deviation from mean, note 1, 10 s delay 400 ps parameter symbol conditions min. typ. max. units thermal resistance junction to ambient ja still air 150 c/w ja 1 m/s air flow 140 c/w ja 3 m/s air flow 120 c/w thermal resistance junction to case jc 40 c/w
ics662-02 ntsc/pal audio clock clock synthesizer idt? / ics? ntsc/pal audio clock 6 ics662-02 rev a 100803 package outline and package dimensions (8 pin soic, 150 mil. narrow body) package dimensions are kept current with jedec publication no. 95 ordering information while the information presented herein has been checked for both a ccuracy and reliability, integrat ed circuit systems (ics) ass umes no responsibility for either its use or for the infringement of an y patents or other rights of third parties, which would result f rom its use. no other circuits, patents, or licenses are im plied. this product is intended for use in normal commercial applications. any other applications such as those requiring extended temperature range, high reliab ility, or other extraordinary environmental requirements are not recommended without additional processing by ics. ics reserves th e right to change any circuitr y or specifications without noti ce. ics does not authorize or warrant any ics product for use in life support devices or critical medical instruments. part / order number (note 1) marking shipping packaging package temperature ics662m-02 662m-02 tubes 8 pin soic 0 to +70 c ICS662M-02TR 662m-02 tape and reel 8 pin soic 0 to +70 c index area 1 2 8 d e seating plane a1 a e - c - b .10 (.004) c c l h h x 45 millimeters inches symbol min max min max a 1.35 1.75 .0532 .0688 a1 0.10 0.25 .0040 .0098 b 0.330.51.013.020 c 0.19 0.25 .0075 .0098 d 4.80 5.00 .1890 .1968 e 3.80 4.00 .1497 .1574 e 1.27 basic 0.050 basic h 5.80 6.20 .2284 .2440 h 0.250.50.010.020 l 0.401.27.016.050 0 8 0 8
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