tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2305 v1.0 - 1 - september, 2004 2.5w 2 class ab audio power amplifier pt2305 description the pt2305 is an audio power amplifier utilizing cmos technology specially designed for audio purpose. it can deliver 2.5w 2 power output to the 4 ? load. the power consumption is very low in stand-by. total harmonic distortion is lower than 0. 03%. the output structure is btl (bridge-tied load) mode for driving speaker load mode. built-in over-tem perature protection, package size is not occupies pcb space. it is suitable for small or portable products. features ? cmos technology ? operating voltage: 2.7v ~ 6v ? output power 2.5w 2 (4 ? /10%thd) ? built-in 31 steps volume controller ? suppress the pop and click noise when mode changed ? extreme low current consumpt ion in shutdown mode (icc<0.7a) ? built-in over temperature protection applications ? lcd monitor or tv ? portable audio ? multimedia speakers ? other audio applications
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2305 v1.0 - 2 - september, 2004 2.5w 2 class ab audio power amplifier pt2305 pin configuration 1 2 3 4 5 6 7 8 13 14 15 16 20 19 18 17 gnd +out 2 gnd +out 1 vdd vdd -out 1 bypass -out 2 gnd shutdown vin 2 mute gnd gnd vo 2 11 12 vo 1 vin 1 9 10 vdd dc_vol pt2305
tel: 886-2-66296288 fax: 886-2-29174598 url: http://www.princeton.com.tw pt2305 v1.0 - 3 - september, 2004 2.5w 2 class ab audio power amplifier pt2305 application circuit order information valid part number package top code pt2305 20 pins, tssop, 173mil pt2305 pt2305-s 20 pins, sop, 300mil pt2305-s PT2305-D 20 pins, dip, 300mil PT2305-D pt2305 (l) 20 pins, tssop, 173mil pt2305 pt2305-s (l) 20 pins, sop, 300mil pt2305-s PT2305-D (l) 20 pins, dip, 300mil PT2305-D notes: 1. (l) = lead free 2. the lead free mark is put in front of the date code.
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