unisonic technologies co., ltd um2752 preliminary linear integrated circuit www.unisonic.com.tw 1 of 5 copyright ? 2012 unisonic technologies co., ltd qw-r109-030. a 2 input/1 output stereo audio selector ? description the utc um2752 is a stereo audio selector with 2 inputs and 1 output. based upon the inner op-amp switch technology, the utc um2752 features higher channel separation, lower output noise and lower distortion than the common multiplexers or analogue switches. the utc um2752 can be applied to many kinds of audio devices, such as car stereo, tv, mini music center and so on. ? features * dual channel for stereo use * 4.7~10v operating voltage * 2 input /1 output audio selectors * bipolar technology * low output noise: -114dbv typ. * low distortion: 0.0009% typ. ? ordering information ordering number package packing lead free halogen free um2752l-p14-r um2752g- p14-r tssop-14 tape reel um2752l-p14-t um2752g- p14-t tssop-14 tube note: xx: output voltage, refer to marki ng information.
um2752 preliminary linear integrated circuit unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r109-030. a ? pin configuration 1 14 outb outa 13 12 11 10 9 8 2 3 4 5 6 7 in1a v+ in2a cnt1 n.c n.c in1b gnd in2b v ref n.c n.c ? pin description pin no. pin name description 1 outa ach output 2 in1a ach input 1 3 v+ supply voltage 4 in2a ach input 2 5 cnt1 select control 1 6~9 n.c no connection 10 v ref reference voltage 11 in2b bch input 2 12 gnd ground 13 in1b bch input 1 14 outb bch output
um2752 preliminary linear integrated circuit unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r109-030. a ? block diagram
um2752 preliminary linear integrated circuit unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r109-030. a ? absolute maximum rating (t a =25c, unless otherwise specified) parameter symbol ratings unit supply voltage v+ 12 v power dissipation p d 450 (note 2) mw 570 (note 3) operating temperature t opr -40~+85 c storage temperature t str -40~+150 c notes: 1. 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. 2. eia/jedec standard test board (76. 2x114.3x1.6mm, 2layer, fr-4) mounting 3. eia/jedec standard test board (76. 2x114.3x1.6mm, 4layer, fr-4) mounting ? electrical characteristics (t a =25c, v + =9v, unless otherwise specified) parameter symbol test conditions min typ max unit operating voltage v + 4.7 9.0 10.0 v supply current i cc no signal 10 15 ma reference voltage v ref 4.5 v voltage gain g v v in =1vrms, f=1khz -1 0 1 db total harmonic distortion thd+n v in =1vrms, f=1khz 0.0009 0.03 % output noise voltage v no a-weighted -114 -100 dbv 2 10 v rms maximum output voltage v om f=1khz, thd=1% 6 8 dbv 2.0 2.5 v rms cross talk ct v in =1vrms, f=1khz, a-weighted 70 100 db channel separation cs v in =1vrms, f=1khz, a-weighted 80 110 db switch-on voltage level v ch 2.4 v switch-off voltage level v cl 0.5 v input impedance r in 100 k ? output impedance r out 45 ? ? switch control logic cnt1 input selector ach/bch l in1 h in2
um2752 preliminary linear integrated circuit unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r109-030. a ? typical application circuit 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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