tel:886-2-66296288 fax:886-2-29174598 url:http://www.princeton.com.tw PT2332 pre1.0 - 1 - september, 2006 2.2w2 class-d audio power amplifier preliminary PT2332 description the PT2332 is a class-d power amplifier desi gned for audio equipments, maximum output power can reach up to 2.2w x 2 (vdd = 5v, rl = 4 ? , thd = 10%). the PT2332 composed of exclusively designed class-d circuitry (patented) by ptc, along with the most advanced semi-conductor technology. when compared to the traditional cl ass-ab amplifiers, the PT2332?s has a much higher efficiency (> 80%), low heat dissipation, and pr oduces superior audio quality. PT2332?s external circuitry is simple and easily accessible, and consis ts of flawless self-protection capabilities. the chip?s packaging is small, thus it occupies an insignificant amount of space on the circuit board; therefore, making it the predominant choi ce when it comes to audio amplifiers. features ? cmos technology ? stereo differential analogue input ? maximum output power 2.2w(4 ? ) 2 @ thd=10% ? output low-pass lc filter is not necessary ? preset 2 voltage gain selection (20db and 26db) ? contains shutdown function ? pop noise free in shutdown changed and power on/off period ? built-in short circuit protection ? built-in overheat protection ? low harmonic distortion (0.1%), superior sound quality ? high efficiency (8 ? load > 85%), low heat dissipation ? sop-16 pins and ssop-16 pins, miniature packages applications ? portable media player ? portable dvd player ? lcd monitor ? small multimedia speakers ? hand-free phone ? laptop ? other audio applications
tel:886-2-66296288 fax:886-2-29174598 url:http://www.princeton.com.tw PT2332 pre1.0 - 2 - september, 2006 2.2w2 class-d audio power amplifier preliminary PT2332 pin configuration 16 1 inrn inrp vcc gain /sd gnd inln inlp outlp outln gndl gndr vddl vddr outrp outrn 2 3 4 5 6 7 89 10 11 12 13 14 15 pin description pin i/o symbol function pin i/o symbol function 1 i inrp right channel input (+) 9 o outlp left channel output (+) 2 i inrn right channel input (-) 10 power gndl ground (left channel) 3 power vcc power input 11 power vddl left channel power input 4 i gain gain setting 12 o outln left channel output (-) 5 i /sd shutdown 13 o outrn right channel output (-) 6 power gnd ground 14 power vddr right channel power input 7 i inln left channel input (-) 15 power gndr ground (right channel) 8 i inlp left channel input (+) 16 o outrp right channel output (+)
tel:886-2-66296288 fax:886-2-29174598 url:http://www.princeton.com.tw PT2332 pre1.0 - 3 - september, 2006 2.2w2 class-d audio power amplifier preliminary PT2332 appication circuit diagram (1) direct driving load inrp 1 inrn 2 vcc 3 gain 4 /sd 5 gnd 6 inln 7 inlp 8 outlp 9 gndl 10 vddl 11 outln 12 outrn 13 vddr 14 gndr 15 outrp 16 ic1 PT2332 p1 ainr p2 ainl p3 outrp p4 outrn p5 outln p6 outlp c2 0.22uf c3 0.22uf c4 0.22uf c5 0.22uf c6 1uf c7 1uf c8 0.1uf c9 10uf vcc /sd gain (the system must have well radiation shielded in direct driving load) (2) operation using output filter c10 0.33uf c11 0.33uf c12 0.33uf c13 0.33uf inrp 1 inrn 2 vcc 3 gain 4 /sd 5 gnd 6 inln 7 inlp 8 outlp 9 gndl 10 vddl 11 outln 12 outrn 13 vddr 14 gndr 15 outrp 16 ic1 PT2332 p1 ainr p2 ainl p3 outrp p4 outrn p5 outln p6 outlp c2 0.22uf c3 0.22uf c4 0.22uf c5 0.22uf c6 1uf c7 1uf c8 0.1uf c9 10uf vcc /sd gain l1 22uh l2 22uh l3 22uh l4 22uh
tel:886-2-66296288 fax:886-2-29174598 url:http://www.princeton.com.tw PT2332 pre1.0 - 4 - september, 2006 2.2w2 class-d audio power amplifier preliminary PT2332 (3) operation with ferrite bead at the output c10 1nf c11 1nf c12 1nf c13 1nf inrp 1 inrn 2 vcc 3 gain 4 /sd 5 gnd 6 inln 7 inlp 8 outlp 9 gndl 10 vddl 11 outln 12 outrn 13 vddr 14 gndr 15 outrp 16 ic1 PT2332 p1 ainr p2 ainl p3 outrp p4 outrn p5 outln p6 outlp c2 0.22uf c3 0.22uf c4 0.22uf c5 0.22uf c6 1uf c7 1uf c8 0.1uf c9 10uf vcc /sd gain l1 fb l2 fb l3 fb l4 fb ferrite bead specification: z=80 ? @100mhz
tel:886-2-66296288 fax:886-2-29174598 url:http://www.princeton.com.tw PT2332 pre1.0 - 5 - september, 2006 2.2w2 class-d audio power amplifier preliminary PT2332 order information valid part number package type top code PT2332-s 16 pins, sop, 150mil PT2332-s PT2332-x 16 pins, ssop, 150mil PT2332-x
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