mk0220 video cd clock source mds0220d 1 revision 10055 printed 11/4/97 microclock incorporated?171 north fourth st.?an jose?a?5112?408)295-9800tel?408)295-9818fax preliminary information preliminary information ?packaged in 16 pin narrow (150 mil) soic ?fully compatible with c-cube cl480 ?supports crystal semiconductor? cs4333 ?supports timing for bt851 ntsc/pal encoder ?cd clock input eliminates crystals and oscillators ?all clocks are frequency-locked to the cd clock ?2.7v to 5.5v operation ?zero ppm error 16.9344, 13.5, 27.0 mhz clocks ?power down mode reduces idd to 10? (typ) the mk0220 provides clocks for video cd systems. it is designed to work specifically with the c-cube cl480, and supports audio dac? like the crystal cs4333, and ntsc/pal encoders such as brooktree? bt851. the chip uses microclock? proprietary analog phase-locked loop technology, and locks to the cd output reference clock of 2.1168 mhz to produce four output clocks. microclock can customize this device for any different frequencies for a small nre. block diagram description features clock buffer/ crystal oscillator vdd gnd clock synthesis and control circuitry 40 mhz (gck) output buffer 2.1168 mhz clock output buffer output buffer 13.5 mhz output buffer 16.9344 mhz (da-xck) x1 x2 27 mhz (vck) 3 5 pd signal names in parentheses under the outputs indicate the corresponding input pins of the cl480 needing this clock.
mk0220 video cd clock source mds0220d 2 revision 10055 printed 11/4/97 microclock incorporated?171 north fourth st.?an jose?a?5112?408)295-9800tel?408)295-9818fax preliminary information preliminary information number name type description 1 gnd p connect to ground. 2 x2 o crystal connection. leave unconnected for clock input, or connect to 2.1168 mhz crystal. 3 x1/iclk i crystal connection. connect to 2.1168 mhz input clock from cd (or crystal). see note above. 4 vdd p connect to +3.3v. 5 gnd p connect to ground. 6 vdd p connect to +3.3v. 7 40m o 40 mhz clock output. use for gck on cl480. 8 gnd p connect to ground. 9 16.9m o 16.9344 mhz clock output. use for da-xck on cl480, mclk on cs4333. 10 27m o 27.00 mhz clock output. leads 13.5m by 5ns. use for vck on cl480, ntsc/pal encoder. 11 gnd p connect to ground. 12 gnd p connect to ground. 13 vdd p connect to +3.3v. 14 13.5m o 13.5 mhz clock output. lags 27m by 5ns. 15 nc - no connect. 16 pd i power down. stops all clocks low when this pin is taken low. pin descriptions type: i = input, o = output, p = power supply connection pin assignment 1 8 9 16 2 3 4 5 6 7 10 11 12 13 14 15 gnd 13.5m nc pd gnd gnd x2 40m vdd vdd gnd x1/iclk gnd 16.93m vdd 27m 16 pin narrow soic
mk0220 video cd clock source mds0220d 3 revision 10055 printed 11/4/97 microclock incorporated?171 north fourth st.?an jose?a?5112?408)295-9800tel?408)295-9818fax preliminary information preliminary information parameter conditions minimum typical maximum units absolute maximum ratings (note 1) absolute maximum ratings (note 1) supply voltage, vdd referenced to gnd 7 v inputs and clock outputs -0.5 vdd+0.5 v ambient operating temperature 0 70 ? soldering temperature max of 20 seconds 260 ? storage temperature -65 150 ? dc characteristics operating voltage, vdd 2.7 5.5 v input high voltage, vih 2 v input low voltage, vil 0.8 v output high voltage ioh=-4ma vdd-0.4 v output high voltage ioh=-25ma 2.4 v output low voltage iol=25ma 0.4 v operating supply current, idd no load, vdd=3.6v 16 20 ma operating supply current, idd no load, vdd=3.0v 12 16 ma standby supply current, idd, at 3.6v no load, pd=0v 10 ? short circuit current each output ?00 ma input capacitance, x1 and x2 pins 15 pf input capacitance 7 pf actual mean frequency error versus target 40.0mhz output only ?00 ppm actual mean frequency error versus target note 2 0 ppm ac characteristics input frequency 2.1168 mhz output clock rise time 0.8 to 2.0v 1.5 ns output clock fall time 2.0 to 0.8v 1.5 ns output clock duty cycle, high time at vdd/2 45 49 to 51 55 % power down time, pd taken low to clocks off 1 ? power up time, pd taken high to clocks stable 2.5 5 ms note: 1. stresses beyond those listed under absolute maximum ratings could cause permanent damage to the device. prolonged exposure to levels above the operating limits but below the absolute maximums may affect device reliability. 2. for the 13.5mhz, 16.9mhz, and 27mhz outputs external components the mk0220 requires a minimum number of external components for proper operation. decoupling capacitors of 0.1? should be connected between vdd and gnd on pins 4/5 and pins 13/12, as close to the mk0220 as possible. a series termination resistor of 33 w may be used for each clock output. the device does not require (nor do we recommend) capacitors connected to the crystal pins. if a 2.1168 mhz crystal is used, it must be connected as close to the chip as possible. recommended load capacitance for the crystal is 12pf. electrical specifications
mk0220 video cd clock source mds0220d 4 revision 10055 printed 11/4/97 microclock incorporated?171 north fourth st.?an jose?a?5112?408)295-9800tel?408)295-9818fax preliminary information preliminary information b d e h e q c a h x 45 package outline and package dimensions ordering information 16 pin soic narrow inches inches millimeters millimeters symbol min max min max a 0.055 0.070 1.397 1.778 b 0.013 0.019 0.330 0.483 c 0.007 0.010 0.190 0.254 d 0.385 0.400 9.779 10.160 e 0.150 0.160 3.810 4.064 h 0.225 0.245 5.715 6.223 e .050 bsc .050 bsc 1.27 bsc 1.27 bsc h 0.016 0.406 q 0.004 0.01 0.102 0.254 while the information presented herein has been checked for both accuracy and reliability, microclock incorporated assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. no other circuits, patents, or licenses are implied. this product is intended for use in normal commercial applications. any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by microclock. microclock reserves the right to change any circuitry or specifications without notice. microclock does not authorize or warrant any microclock product for use in life support devices or critical medical instruments. part/order number marking package temperature mk0220-01s mk0220-01s 16 pin narrow soic 0-70? MK0220-01STR mk0220-01s add tape & reel 0-70? change history version date first published comments a 6/1/95 original b 6/22./95 changed operating voltage from 3.0-4.0v to 2.7v-3.6v. corrected pin 14. added 40mhz accuracy. c 9/18/95 changed operating volyage to 2.7v-5.5v. added specific pins for decoupling caps.
|
