princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw electronic volume controller ic pt2255a pt2255a v 1.0 page 1 written april 1999 pt2255a is an electronic volume controller ic utilizing cmos technology specially designed for use on audio equipment. it has two (2) built-in channels making it ideally suitable for mono and stereo sound applications. pt2255a provides a wide frequency response range and a very low harmonic distortion to mention a few; thereby guaranteeing a highly effective and reliable performance. ! cmos technology ! low power consumption ! high operating voltage range : vcc = 4 ~ 12 v (backup voltage is up to 4 v) ! 0db to -34db attenuation controlled by 1db/step ! 2 channels in each chip ! capable to control attenuation by a built-in oscillator and up/down pin ! single power supply or dual power supplies of (+) and (-) can be used ! wide frequency response range ! very low harmonic distortion ! available in 16 pins, dip or so package ! audio equipment volume control
princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw electronic volume controller ic pt2255a pt2255a v 1.0 page 2 written april 1999 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 vss l-out1 l-in1 a-gnd l-in2 l-out2 in h dco vcc r-out1 r-in1 a-gnd r-in2 r-out2 u/d osc pt 2255a pt2255a - x package: d: dip package (may be omitted) sn : so package (150 mil) part number ptc prefix valid part number package pt2255a 16 pins, dip pt2255a-sn 16 pins, so (150 mil)
princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw electronic volume controller ic pt2255a pt2255a v 1.0 page 3 written april 1999
princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw electronic volume controller ic pt2255a pt2255a v 1.0 page 4 written april 1999
princeton technology corp . tel: 886-2-29162151 fax: 886-2-29174598 url: http://www.princeton.com.tw electronic volume controller ic pt2255a pt2255a v 1.0 page 5 written april 1999
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