unisonic technologies co., ltd USA575 preliminary linear integrated circuit www.unisonic.com.tw 1 of 7 copyright ? 2015 unisonic technologies co., ltd qw-r106-008.a low voltage compandor ? description the utc USA575 is a precision dual gain control circuit designed for low voltage applications. the utc USA575?s channel 1 is an expandor, while channel 2 can be configured either for expandor, compressor, or automatic level controller (alc) application. ? features * operating voltage range from 3v to 7v * reference voltage of 100mv rms =0db * 600 ? drive capability * one dedicated summing op amp per channel and two extra uncommitted op amps * single or split supply operation * wide input/output swing capability ? ordering information ordering number package packing USA575g-r20-r ssop-20 tape reel ? marking
USA575 preliminary linear integrated circuit unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r106-008.a ? pin configuration 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 +v in1 -v in1 v out rect. in1 c rect1 sum out 1 comp. in1 v ref gain cell in1 gnd v cc +v in2 -v in2 v out2 rect.in2 c rect2 sum out2 comp.in2 sum node 2 gain cell in2 ? pin description pin no. pin name description 1 +v in1 non-inverted input 1 2 -v in1 inverted input 1 3 v out output 4 rect. in1 rectifier 1 input 5 c rect1 external capacitor pinout for rectifier 1 6 sum out1 summation output 1 7 comp. in1 compensator pin 8 v ref v oltage reference 9 gain cell in1 v ariable gain cell input 1 10 gnd ground 11 gain cell in2 v ariable gain cell input 2 12 sum node 2 summation node 2 13 comp. in2 compensator pin 14 sum out2 summation output 2 15 c rect2 external capacitor pinout for rectifier 2 16 rect. in2 rectifier 2 input 17 v out2 output 2 18 -v in2 inverted input 2 19 +v in2 non-inverted input 2 20 v cc positive power supply
USA575 preliminary linear integrated circuit unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r106-008.a ? block diagram
USA575 preliminary linear integrated circuit unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r106-008.a ? absolute maximum rating parameter symbol ratings unit single supply voltage v cc -0.3 ~ 8 v voltage applied to any other pin v in -0.3 ~ (v cc +0.3) v operating ambient te mperature range t a -40 ~ +85 c storage temperature range t stg -65 ~ +150 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. ? thermal data parameter symbol ratings unit junction to ambient ja 117 c/w ? electrical characteristics (typical values are at t a =25c. minimum and maximum values are fo r the full operating te mperature range: -40~+85c, except ssop package is tested at +25c only. v cc =5v, unless otherwise stated. both channels are tested in the expandor mode) parameter symbol test conditions min typ max unit for compandor, includi ng summing amplifier supply voltage (note 1) v cc 3 5 7 v supply current i cc no signal 3 4.2 5.5 ma reference voltage (note 2) v ref v cc =5v 2.4 2.5 2.6 v summing amp output load r l 10 k ? total harmonic distortion thd 1k hz,0db bw=3.5khz 0.12 1.5 % output voltage noise e no bw=20khz,r s =0 ? 6 30 v unity gain level 0db 1khz -1.5 1.5 db output voltage offset v os no signal -150 150 mv output dc shift no signal to 0db -100 100 mv gain cell input=0db, 1khz rectifier input=6db, 1khz -1.0 1.0 db tracking error relative to 0db gain cell input=0db, 1khz rectifier input=-30db, 1khz -1.0 1.0 db crosstalk 1khz, 0db, c ref =220f -80 -65 db for operational amplifier output swing v o r l =10k ? v cc -0.4 v cc v output load r l 1khz 600 ? input common-mode range cmr 0 v cc v common-mode rejection ratio cmrr 60 80 db input bias current i b v in =0.5v~4.5v -1 1 a input offset voltage v os 3 mv open-loop gain a vol r l =10k ? 80 db slew rate sr unity gain 1 v/s bandwidth gbw unity gain 3 mhz input voltage noise e ni bw=20khz 2.5 v power supply rejection ratio psrr 1khz, 250mv 60 db notes: 1. operation down to v cc =2v is possible, but performance is reduced. 2. reference voltage, v ref , is typically at 1/2v cc .
USA575 preliminary linear integrated circuit unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r106-008.a ? typical application circuit ? g 10k 3.8k 15 2.2f 16 11 14 12 10k 13 8 10f comp in v ref 30k 1f 30k 10f comp out 4.7f figure 2. typical compressor configuration
USA575 preliminary linear integrated circuit unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r106-008.a ? typical application circuit + - 3.8k op amp 10k v ref 10k g g 10k 10k 3.8k op amp + - v cc gnd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 30k r6 30k r7 c7 1f 10f c8 comp/ alc out 2.2f c9 4.7f c13 c11 j2 r10 r11 c10 s1 alc comp 10f c12 comp/ alc in r12 10k 47f c14 0.1f c15 v ref v cc -5v 10f c3 j1 c2 r2 r1 c1 exp out 2.2f c4 c5 10f c6 10f exp in v ref utc USA575
USA575 preliminary linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r106-008.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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