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PT2347 Datasheet(PDF) 1 Page - Princeton Technology Corp |
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PT2347 Datasheet(HTML) 1 Page - Princeton Technology Corp |
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1 / 3 page  Preliminary PT2347 Stereo Audio Processor Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan DESCRIPTION The PT2347 is an audio processor designed for versatile application, it adopts all of functions from successful predecessor- the PT2313L, and it includes 3 stereo input selector with adjustable gain, master volume control with low frequency loudness compensation, individual output attenuator and tone control. In car audio applications, maximum power output of the audio set is measurement on saturated condition, it may not achieve the goal if power amplifier does not have enough gain, therefore, the PT2347 provides extra +10dB voltage gain in final output stage, it is easy to drive the power amplifier into saturated power and eliminates external gain OPAMP. APPLICATIONS • Car audio • Home audio system • Powered speaker system FEATURES • Controlled by I²C interface • Direct replace the PT2313L with +10dB output gain • 3 stereo inputs with gain selection, range from 0dB to +11.25dB in 3.75dB/step • Master volume from 0dB to -78.75dB in 1.25dB/step • Speaker attenuator for balance and fader, range from 0dB to -38.75dB in 1.25dB/step • Each output can be muted individually. • Low frequency loudness compensation • Bass and Treble control, range from -14dB to +14dB in 2dB/step • Wide operation range (VDD = 4V to 10V) • Low harmonic distortion Low noise BLOCK DIAGRAM LOUT LIN1 LIN2 LIN3 REF LOUDNESS LIN LOUD_L REF BOUT_L BIN_L TREB_L TREBLE BASS LFOUT LROUT REF REF REF REF LOUDNESS REF TREBLE BASS RROUT RFOUT TREB_R BOUT_R LOUD_R RIN RIN3 RIN2 RIN1 ROUT REF VDD REF AGND REF SCL SDA DGND I2C DECODER BIAS BIN_R Speaker Attenuator With Mute Master Volume Loud SW +10dB GAIN +10dB GAIN Input SW and GAIN Input SW and GAIN |
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