PT2033 2.1 Channel Audio Processor with Subwoofer Out DESCRIPTION FEATURES The PT2033 is an audio processor designed for versatile application, it includes 3 stereo input selector with internal gain, master volume control with low frequency loudness compensation, individual channel output volume adjust and tone control. • • • • • If a system wants subwoofer signal output, traditional solution needs a lot of discrete components and OPAMP to consist of low pass filter; in the PT2033, just needs 2 capacitors only. The PT2033 combine the low pass filter inside the audio processor and user may determine low pass corner frequency by the capacitance. Broader supply range emphasis support to every application. • • • • • • • APPLICATIONS • • • • CMOS technology Controlled by I²C interface 3 Stereo Inputs with gain selection. Input gain range, from 0dB to +11.25dB, 3.75dB per step 2 channels master volume: from 0 dB to -78.75dB, 1.25dB per step Built In channel mixer and lowpass filter for subwoofer output Subwoofer output volume : from 0dB to -37.5dB, 1.25dB per step Tone control (Bass and Treble): from -14dB to +14dB, 2dB per step Wide operation range(VDD from 4V to 10V) Low harmonic distortion (0.002%, Vo=200mVrms) Low noise and DC offset 32-pin SOP package TV Mini compo Multimedia speaker Audio docking system INL3 INL2 INL1 LOUDNESS BASS LOUT TREL BASSL2 BASSL1 LOUDL VOLL IGOL BLOCK DIAGRAM TREBLE REF L Volume REF C2 C1N REF C1P Lin Gain SIN BIAS SOUT VDD L Att. REF REF I2C AGND SWOUT REF DGND SDA R Volume REF Sub Vol 2nd order LPF BASSR2 BASS BASSR1 LOUDR VOLR LOUDNESS TREBLE ROUT REF INR1 INR2 INR3 IGOR REF R Att. Rin Gain TRER SCL REF Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT2033 APPLICATION CIRCUIT STANDARD APPLICATION CIRCUIT VDD 1 REF VDD 32 10uF 2 INL1 INR1 31 1uF IN2 3 INL2 INR2 30 1uF IN3 1uF 2.2uF 1uF 4 INL3 INR3 29 5 IGOL IGOR 28 6 VOLL VOLR 27 7 LOUDL LOUDR 26 8 BASSL1 BASSR1 25 9 BASSL2 BASSR2 24 10uF IN1 1uF IN2 1uF IN3 1uF 2.2uF RIGHT CHANNEL LEFT CHANN EL IN1 1uF 100nF 5.6K 100nF 47K 4.7uF 2.2uF 5.6K 100nF 10 TREL TRER 23 11 LOUT ROUT 22 8200p LOUT 100nF 47K 8200pF ROUT 4.7uF SWOUT 21 12 SOUT C2 C2 20 13 SIN 14 AGND C1N 19 SCL 15 SCL C1P 18 SDA 16 SDA DGND 17 SWOUT 4.7uF 47K 33nF C1 68nF LPF Fc=150Hz CHANNEL SPEAKER SYSTEM (WIRING SIMPLIFIED) +5V 1 REF VDD 32 1 IN3P OUT3P 24 2 IN3N VDD3 23 0.22uF 2 INL1 INR1 31 3 INL2 INR2 30 3 NC GND3 22 4 INL3 INR3 29 4 NC OUT3N 21 5 IGOL IGOR 28 5 IN2N OUT2N 20 6 IN2P GND2 19 7 MCLR VDD2 18 0.22uF L SPEAKER 0.22uF 6 VOLL VOLR 27 7 LOUDL LOUDR 26 8 BASSL1 BASSR1 25 9 BASSL2 BASSR2 24 10 TREL TRER 23 11 LOUT ROUT 22 12 SOUT SWOUT 21 0.22uF 0.22uF 8 VDD OUT2P 17 9 GND OUT1P 16 10 SD VDD1 15 11 IN1P GND1 14 12 IN1N OUT1N 13 R SPEAKER SW SPEAKER 0.22uF 13 SIN C2 20 14 AGND C1N 19 15 SCL C1P 18 16 SDA DGND 17 PT2002 PT2033 V1.4 2 September 2010 PT2033 ORDER INFORMATION Valid Part Number PT2033-S Package Type 32 Pins, SOP, 300mil Top Code PT2033-S PIN CONFIGURATION V1.4 3 September 2010 PT2033 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 V1.4 15 September 2010