unisonic technologies co., ltd ULA1235 preliminary linear integrated circuit www.unisonic.com.tw 1 of 5 copyright ? 2015 unisonic technologies co., ltd qw-r106-007.a fm if system applications ? description the utc ULA1235 is a high integrated ic developed for use in high s/n(s/n =88db), low dist ortion (distortion factor=0.015%) fm if system applications. and th is ic has almost all functions required for fm tuner if stage. ? features * if amplifier, limiter. * tuning meter null circuit. functions * af preamplifier. * signal intensity muting drive output. * quadrature detection * detuning muting drive output. * af signal muting circuit. * if amplifier stop circuit. * afc, tuning meter drive output. * signal meter drive output. ? ordering information ordering number lead free halogen free package packing ULA1235l-d16-t ULA1235g-d16-t dip-16 tube ? marking
ULA1235 preliminary linear integrated circuit unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r106-007.a ? pin configuration ? pin description pin no. pin name description 1 v1 if input 2 v2 if input 3 v3 if input 4 v4 gnd 5 v5 mute attenuation control 6 v6 af output 7 v7 afc output 8 v8 if output 9 v9 quadrature detection input 10 v10 voltage regulator output 11 v11 power supply 12 v12 muting driving output 13 v13 signal meter driving output 14 v14 gnd 15 v15 muting sensitivity control 16 v16 muting hysteresis width control ? block diagram
ULA1235 preliminary linear integrated circuit unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r106-007.a ? absolute maximum rating (t a =25c, unless otherwise specified) parameter symbol ratings unit supply voltage (pin 11) v cc 16 v input voltage (pin 1 to 2) v in 1 v supply current (pin 11) i cc 40 ma flow-in current (pin 5) i 5 3 ma pin 10 i 10 2 ma flow-out current i 13 2 ma allowable power dissipation p d 650 mw operating temperature t opr -20~+70 c storage temperature t stg -40~+125 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? recommended operating conditions (t a =25c, unless otherwise specified) parameter symbol ratings unit recommended supply voltage v cc 10~14 v ? electrical characteristics (t a =25c, v cc =12v, f=10.7mhz) parameter symbol test conditions min typ max unit quiescent current i cco quiescent 21 30 ma current drain i cc v in =100db 22 31 ma detection output v o v in =100db, 400hz, 100% mod. 310 430 590 mvrms s/n v in =100db, 400hz, 100% mod. 82 88 db -3db limiting sensitivity v in(lim) v o : -3db, 400hz, 100% mod. 25 31 db muting sensitivity v in(mute) v 12 =5.6v, r 16 =56k ? , r 15 =50k ? 40 50 db muting attenuation mute(att) v in =100db, 400hz, 100% mod. v 5 =3.5v 80 100 db muting bandwidth bw(mute) v in =100db, v 12 =3v 120 200 330 khz v 12(1) quiescent 5.6 6.2 6.8 v muting driving output v 12(2) v in =100db 0 0.3 v total harmonic distortion thd v in =100db, 400hz, 100% mod. 0.015 0.05 % am supperssion ratio amr v in =80db, fm=400hz, 100% mod, am=1khz, 30% mod. 45 60 db v 13(1) quiescent 0 0.1 v v 13(2) v in =35db 0.1 0.5 v v 13(3) v in =70db 1.3 2.0 2.9 v signal meter driving output v 13(4) v in =100db 2.2 3.5 5.0 v v 6-10 quiescent, pin 6 to 10 -0.8 0 +0.8 v offset voltage v 7-10 quiescent, pin 7 to 10 -0.4 0 +0.4 v tuning meter null voltage v 7-10(null) v 5 =7.5v, pin 7 to 10 -50 +5 +50 mv if-off voltage i 15(if off) v 2-3 =1v 5.6 7.5 v
ULA1235 preliminary linear integrated circuit unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r106-007.a ? test circuit 0.047 0.047 235 s01 (sumida) ? typical application circuit 13 15 16 12 14 10 9 8 11 utc ULA1235 3.3k 5 p.e 10.7 mx (murata) -40~45db to voltage drive type smeter -4db front end gain distribution 0.047 330 0.047 0.047 30k 0.022 50k 56k + 1 0.047 68k 1 + muting sw 10k + 2.2 3.3k ds442 to am tuner rf v cc 33p (to mpx ic) af output 2.2 + 5.1k (equivalent to lb1450) to voltage drive type tuning meter 0.047 + 220 4.7k 0.047 2.2h v cc 235s01 (sumida) unit (resistance: , capacit ance: f) 6 7 2 1 3 4
ULA1235 preliminary linear integrated circuit unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r106-007.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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