PT7313E

PT7313E Stereo Audio Processor for Car Audio DESCRIPTION The PT7313E is an audio processor designed for versatile application, including 3 stereo input selectors with adjustable gain, master volume control with low frequency loudness compensation, individual output attenuator and tone control. It is a good solution for the car audio signal processing. Due to the high reliability requirement from the car audio business, the PT7313E improves both audio performance and input surge current capability that make PT7313E the best solution for the cost-effective car audio systems. FEATURES 3 stereo inputs with gain selection, range from 0dB to +11.25dB in 3.75dB/step Master volume from 0 dB to -78.75dB in 1.25dB/step Speaker attenuator for balance and fader, range from 0dB to -38.75dB in 1.25dB/step Each channel 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) APPLICATIONS Car Audio Home Audio System Powered Speaker System APPLICATION CIRCUIT PT2313E 22uF 1 REF SCL 28 SDA 27 DGND 26 LFOUT 25 RFOUT 24 LROUT 23 RROUT 22 BOUT_R 21 BIN_R 20 BOUT_L 19 BIN_L 18 LOUT 17 LIN 16 LIN1 15 100n 100n 100n 100n 2.2uF 5.6K 10uF 10uF 10uF 10uF Front Right Front Left PT7313E MCU VDD 2 VDD 3 AGND 4 2.7n 2.7n 5 6 7 TREB_L TREB_R RIN ROUT Input Surge P rotection L A UDIO 3 R L A UDIO 2 R L A UDIO 1 R 2.2K 2.2K 2.2K 2.2K 2.2K 2.2K 2.2uF 2.2uF 8 LOUD_R ...