PT2033 2.1 Channel Audio Processor with Subwoofer Out DESCRIPTION FEATURES The PT2033 is an audio processor designed for versatile application, it adopt good quality from it’s successful predecessor PT2313L family and includes all functions of the PT2313L family such like 3 group input selector with internal gain, master volume control with low frequency loudness compensation, individual channel output volume adjust and tone control. • • • • If audio system designer wants to put an additional subwoofer into the design for more realistic and powerful deep bass, in traditional solution it needs to put a lot of external components and discrete OPAMP to consist a low pass filter for subwoofer driving signal; in the PT2033, just put 2 capacitor on board and finish. The PT2033 combine the low pass filter inside the audio processor and user may determine low pass corner frequency by the external capacitance. Broader supply range emphasis support to every application. • • • • • • • • 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 stereo to mono 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 DIP/SOP package APPLICATIONS • • • • TV Mini compo Multimedia speaker Audio docking system BLOCK DIAGRAM IGOL VOLL BASSL1 BASSL2 TREL SOUT OUTLF OUTLR CIP SIN SWOUT CIN Speaker INL1 Mute INL2 In-Gain INL3 Speaker Bass Input Select Treble Mute Volume L VDD - 50K SUBWOOFER 40K - Speaker + REF Rch_REF + Lch_REF + Logic - + 25K 25K + 50K - INL4 - GND + Rch_REF - Volume R 40K 20K Mute Speaker INR1 Bass INR2 In-Gain INR3 INR4 Treble Mute Speaker Input Select Mute IGOR VOLR BASSR2 BASSR1 TRER OUTRF OUTRR C2 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 10uF 1uF IN2 1uF IN3 1uF 2.2uF 1uF 100nF 5.6K 100nF 8200p LOUT 4.7uF 47K 2.2uF VDD 32 2 INL1 INR1 31 INR2 30 3 INL2 4 INL3 INR3 29 5 IGOL IGOR 28 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 10uF IN1 1uF IN2 1uF IN3 1uF 2.2uF RIGHT CHANNEL LEFT CHANNEL IN1 1 REF 1uF 100nF 5.6K 100nF 47K 8200pF C2 14 AGND C1N 19 SDA 15 SCL C1P 18 SCL 16 SDA DGND 17 SWOUT 4.7uF C2 20 13 SIN ROUT 4.7uF 47K 33nF C1 68nF LPF Fc=150Hz 2.1 CHANNEL SPEAKER SYSTEM (WIRING SIMPLIFIED) +5V 1 REF VDD 32 1 IN3P OUT3P 24 0.22uF 2 INL1 INR1 31 2 IN3N VDD3 23 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 0.22uF 7 LOUDL LOUDR 26 8 BASSL1 BASSR1 25 8 VDD OUT2P 17 9 BASSL2 BASSR2 24 9 GND OUT1P 16 10 TREL 10 SD TRER 23 11 LOUT ROUT 22 12 SOUT SWOUT 21 0.22uF R SPEAKER VDD1 15 11 IN1P GND1 14 12 IN1N OUT1N 13 SW SPEAKER 0.22uF 13 SIN C2 20 14 AGND PT2002 C1N 19 15 SCL C1P 18 16 SDA DGND 17 PT2033 V1.1 2 August, 2009 PT2033 ORDER INFORMATION Valid Part Number PT2033-S Package Type 32 Pins, SOP, 300mil Top Code PT2033-S PIN CONFIGURATION V1.1 3 August, 2009 PT2033 PIN DESCRIPTION Pin Name REF INL1 INL2 INL3 IGOL VOLL LOUDL BASSL1 BASSL2 TREL LOUT SOUT SIN AGND SCL SDA DGND C1P C1N C2 SWOUT OUTR TRER BASSR2 BASSR1 LOUDR VOLR IGOR INR3 INR2 INR1 VDD V1.1 I/O I I I O I I I O I O O I I I I I I I O O I O I I I O I I I - Description Analog reference voltage (1/2 VDD) Left channel input 1 Left channel input 2 Left channel input 3 Left channel buffer output Left channel volume controller input Capacitor node for left channel loudness Capacitor node 1st for left channel bass filter Capacitor node 2nd for left channel bass filter Capacitor node for left channel treble filter Left channel output L+R mixer (mono) output Low pass filter input Analog ground I²C clock input I²C data input Digital ground, connect with AGND in shortest route. Node P for low pass filter ext cap Node N for low pass filter ext cap 2nd node for low pass filter ext cap Subwoofer output Right channel output Capacitor node for right channel treble filter Capacitor node 2nd for right channel bass filter Capacitor node 1st for right channel bass filter Capacitor node for right channel loudness Right channel volume controller input Right channel buffer output Right channel input 3 Right channel input 2 Right channel input 1 Power supply 4 Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 August, 2009 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 V1.1 5 August, 2009