PT2315E Stereo Audio Processor for Home TV Audio DESCRIPTION FEATURES The PT2315E is an audio processor designed for versatile application, includes master volume control with low frequency loudness compensation, speaker output attenuator and tone control. It is a good solution for the home audio signal processing. • Master volume from 0 dB to -78.75dB in 1.25dB/step • Speaker attenuator for balance, 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) • Low harmonic distortion, low noise • Improved and replace PT2315 and PT2315A Due to the high reliability requirement from the audio business, the PT2315E improves both audio performances and input surge current capability, these causes the PT2315E is the best solution for the cost-effective audio systems. APPLICATIONS • • • Flat Panel TV Home Audio System Powered Speaker System BLOCK DIAGRAM Speaker Attenuator With Mute OUT_R OUT_L REF TREB_L BIN_L REF TREBLE TREBLE Master Volume BASS BOUT_L BASS REF LOUD_L VDD LOUDNESS Loud SW REF INT Ref BIN_R BOUT_R REF LOUDNESS LIN TREB_R LOUD_R RIN SCL REF BIAS I2C DECODER SDA DGND AGND Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT2315E APPLICATION CIRCUIT PT2315E VDD 22uF 1 REF SCL 20 2 VDD SDA 19 3 AGND 2.7n 2.7n Input Surge Protection L AUDIO 1 V1.1 R 2.2K 2.2K 2.2uF 2.2uF 100n 100n MCU DGND 18 4 TREB_L OUT_L 17 5 TREB_R OUT_R 16 6 RIN BOUT_R 15 7 LOUD_R BIN_R 14 8 NC BOUT_L 13 9 LOUD_L BIN_L 12 10 NC LIN 11 2 Left 10uF 10uF Right 100n 100n 100n 5.6K Power Amplifier 5.6K 100n March 2010 PT2315E ORDER INFORMATION Valid Part Number PT2315E-S Package Type 20 Pins, SOP, 300mil Top Code PT2315E PIN CONFIGURATION REF 1 20 SCL VDD 2 19 SDA AGND 3 18 DGND TREB_L 4 17 OUT_L TREB_R 5 PT2315E RIN 6 15 BOUT_R LOUD_R 7 NC 14 BIN_R 8 13 BOUT_L LOUD_L 9 12 BIN_L NC 10 V1.1 16 OUT_R 11 LIN 3 March 2010 PT2315E PIN DESCRIPTION Pin Name I/O REF - Analog reference voltage (1/2VDD) 1 VDD - Supply input voltage 2 AGND - Analog ground 3 TREB_L I Left channel input for treble controller 4 TREB_R I Right channel input for treble controller 5 RIN I Right channel volume controller input 6 LOUD_R I Right channel loudness input 7 No connect 8 Left channel loudness input 9 No connect 10 NC LOUD_L I NC V1.1 Description Pin No. LIN I Left channel volume controller input 11 BIN_L I Left channel input for bass controller 12 BOUT_L O Left channel output for bass controller 13 BIN_R I Right channel input for bass controller 14 BOUT_R O Right channel output for bass controller 15 OUT_R O Right rear speaker output 16 OUT_L O Left rear speaker output 17 DGND - Digital ground 18 2 SDA I I C data input 19 SCL I I2C clock input 20 4 March 2010 PT2315E IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw V1.1 5 March 2010