utc TA7343AP linear integrated circuit utc unisonic technologies co., ltd. 1 qw-r110-004,a fm stereo multiplex decorder description the utc TA7343AP is a monolithic integrated circuit consisting of a phase locked loop fm stereo demodulator. it is designed for car stereo, cassette recorder and other equipment. features *wide operating supply voltage : vcc=3v ~ 12v *high pilot lamp on sensitivity (vl(on)=9mv) *built-in indicator lamp drive circuit. *high distortion thd=0.08% at vi+200mv sip-9 block diagram phase dector 3 5 6 7 9 8 2 4 1 af dc vcc 76khz 1/2 1/2 1/2 fm switch stereo decorder lamp trigger voltage regulator buffer fc 19khz<90 o 19khz<0 o 38khz l-ch outputr-ch output l.p.f-2 sw2 sw1 led gnd l.p.f-1 vcc input sw1 vcc sw2 38khz vcc 38khz check
utc TA7343AP linear integrated circuit utc unisonic technologies co., ltd. 2 qw-r110-004,a absolute maximun rating (ta=25 c) parameter symbol rating unit supply voltage vcc 12 v lamp voltage vlamp 16 v lamp current (continuous) ilamp 20 ma power dissipation pd 500 mw operating temperature range topr -20 - +70 c storage temperature range tstg -40 - +125 c electrical characteristics (ta=25 c,vcc=8v,f=1khz, unless otherwise specified) parameter symbol test conditions min typ max unit quiescent circuit current i ccq vi=0 11 18 ma maximum input voltage vi(max) l+r=90%,p=10%, thd=1% 550 mv channel separation cs l+r=180mv, p=20mv 36 45 db total harmonic distortion (mono) thd1 vi=200mv 0.08 0.3 % total harmonic distortion (stereo) thd2 l+r=1800mv, p=20mv 0.08 % voltage gain gv vi=200mv -2.0 0 +2.0 db channel balance cb vi=200mv 0 1.5 db lamp on level v l(on) pilot only 9 15 mv lamp off level v l(off) pilot only 2 6 mv lamp hysteresis hy 3 mv carrier leakage vleak 19khz, l+r=180mv 34 db 38khz, p=20mv 42 db
utc TA7343AP linear integrated circuit utc unisonic technologies co., ltd. 3 qw-r110-004,a test circuit application information (refer to test circuits) external components 1.) input coupling capacitor(c1) the recommended value is 10 f. if smaller vlaues than 10 ? f are used, low frequency separation will worsens, and is larger values are used, pop noise occurs strongly. 2.) low pass filter (c2,c1,r1) this is the low pass filter fr the pll, which is determined the capture range and thd at low frequency. 3.) vco network (c4,r2,r7) the vco free running frequency is adjusted by connecting a frequency counter to monitor the 38khz output of pin6. 4.) decoder output (pin8,9) these components provide right and left channel output l oad circuits. the recommended circuits as follows:
utc TA7343AP linear integrated circuit utc unisonic technologies co., ltd. 4 qw-r110-004,a typical performance characteristics
utc TA7343AP linear integrated circuit utc unisonic technologies co., ltd. 5 qw-r110-004,a utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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