unisonic technologies co., ltd ka22241 linear integrated circuit www.unisonic.com.tw 1 of 6 copyright ? 2008 unisonic technologies co., ltd qw-r110-001,c dual equalizer amplifier with alc ? description the utc ka22241 is a monolithic integrated circuit, consisting of dual equalizer amplifier with alc, and it is suitable for stereo radio cassette tape recorders. ? features * dual equalizer amplifier with built-in alc circuit * low noise v ni =1.0 v(typical) * high open loop voltage gain: gv=80db(typical) * good alc response balance between channels * not necessary the input coupling capacitor * not necessary the diode or transistor for alc * built in power supply muting circuit * minimum number of external parts required lead-free: ka22241l halogen-free: ka22241g ? ordering information ordering number normal lead free halogen free package packing KA22241-S14-T ka22241l-s14-t ka22241g-s14-t sop-14 tube ka22241-s14-r ka22241l-s14-r ka22241g-s14-r sop-14 tape reel ka22241-g09-t ka22241l-g09-t ka22241g-g09-t sip-9 tube ka22241l-s14-t (1)packing type (2)package type (3)lead plating (1) r: tape reel, t: tube (2) s14: sop-14, g09: sip-9 (3) g: halogen free, l: lead free, blank: pb/sn
ka22241 linear integrated circuit unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r110-001,c ? block diagram 1 2 3 4 5 6 7 8 9 alc channel 1 channel 2 nf1 in1 out1 gnd alc mute vcc in2 nf2 out2 sip-9 sop-14
ka22241 linear integrated circuit unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r110-001,c ? absolute maximum rating (ta=25 ) parameter symbol ratings unit supply voltage v cc 16 v sip-9 550 power dissipation sop-14 p d 450 mw operating temperature t opr -20 ~ 75 c storage temperature t stg -20 ~ 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. ? electrical characteristics (ta=25 c, v cc =7v, f=1khz, unless otherwise specified) parameter symbol test conditions min typ max unit input noise voltage v in r g =2.2k bw(-3db)=20hz~20khz 1.0 2.0 v output voltage v out thd=1% 0.6 1.2 v quiescent circuit current i ccq v in =0 1.5 3.5 4.5 ma open loop voltage gain g vo v out =0.3v 70 80 db closed loop voltage game g vc v out =0.3v 45 48 50 db alc range v alc r o =3.9k , thd=10% 40 45 db alc balance cb alc v in =1mv 0 2.5 db total harmonic distortion thd v out =0.3v 0.1 0.3 % input resistance r in 15 25 45 k
ka22241 linear integrated circuit unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r110-001,c ? test circuit sw 4 sw 6 sw 7 2.2k 1m 2.2f 220 330f 3.9k 2.2k test method symbol sw1 sw2 sw3 sw4 sw5 sw6 sw7 sw8 sw9 sw10 sw11 i ccq on off 1 on 3 on on 3 1 off on g vo on off 1 on 1 on on 3 1 off on g vc off on 1 on 1 on on 3 1 off on thd off on 1 on 1 on on 3 1 off on v out off on 1 on 1 on on 3 1 off on v ni-1 off on 1 on 2 on on 3 1 off on v ni-2 on off 1 on 3 on on 2 1 on off v alc off off 2 off 1 off on 3 1 off on cb alc off off 2 off 1 off off 1 2 off off
ka22241 linear integrated circuit unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r110-001,c ? typical application circuit 1 2 3 4 5 6 7 8 9 alc channel 1 channel 2 mute r1 15k 39 3.9k 100 f 10f 10f 22f 1m 330 f 10f 10f 3.9k 100f 220 r1 15k 39 vcc=7v note: on playback, connect the time constant circuit as follo ws below, instead of r1 of pi ns 1, 3, 7, 9, which are used in the nab.
ka22241 linear integrated circuit unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r110-001,c ? typical characteristics operating current vs. temperature ambient temperature, ta ( ) maximum output voltage vs. temperature ambient temperature, ta ( ) 25 75 2.90 -25 50 2.65 0 2.80 2.75 2.70 2.85 v cc = 7v 25 75 6.4 -25 50 0 0 6.0 5.8 5.7 6.2 v oh 5.9 6.1 6.3 ~ ~ 10 0 0.2 v ol v cc =7v, r l =10k 100 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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