PT2033 PTC | Alldatasheet

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Technical content

2.1 Channel Audio Processor with

Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan

DESCRIPTION

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.

APPLICATIONS

  • TV
  • Mini compo
  • Multimedia speaker
  • Audio docking system

FEATURES

  • 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 BLOCK DIAGRAM SIN Mute Speaker VDD Input Select Mute Speaker Mute Speaker SUBWOOFER INR1 INR2 INL3 In-Gain Rch_REF Volume L IGOL Mute Speaker SOUT BASSR1 Logic 20K IGOR VOLL Mute Speaker 40K TRER GND INL2 OUTLR INR3 Lch_REF Volume R OUTRR Input Select OUTLF 25K25K Bass INR4 CIP 40K Treble BASSL2 Bass INL1 50K SWOUT Rch_REF INL4 Treble TREL REF VOLR BASSR2 CIN In-Gain 50K OUTRF BASSL1

V1.1 2 August, 2009 APPLICATION CIRCUIT STANDARD APPLICATION CIRCUIT 321 16 17 REF INL1 INL2 INL3 IGOL VOLL LOUDL BASSL1 BASSL2 TREL LOUT SOUT SIN AGND SCL SDA DGND C1N C1P SWOUT ROUT TRER BASSR2 BASSR1 LOUDR VOLR IGOR VDD INR1 INR2 INR3 1uF 1uF 1uF 2.2uF 1uF 100nF 100nF 5.6K 10uF 8200p 4.7uF47K 2.2uF SDA SCL SWOUT LOUT ROUT IN1 IN2 IN3 68nF 33nF 4.7uF 4.7uF 8200pF 100nF 100nF 5.6K 47K 47K 1uF 2.2uF 1uF 1uF 1uF 10uF VDD IN1 IN2 IN3 RIGHT CHANNEL LEFT CHANNEL LPF Fc=150Hz

2.1 CHANNEL SPEAKER SYSTEM (WIRING SIMPLIFIED)

0.22uF 0.22uF 0.22uF 0.22uF 0.22uF 0.22uF PT2033 PT2002 L SPEAKER R SPEAKER SW SPEAKER +5V

V1.1 3 August, 2009 ORDER INFORMATION Valid Part Number Package Type Top Code PT2033-S 32 Pins, SOP, 300mil PT2033-S PIN CONFIGURATION

V1.1 4 August, 2009 PIN DESCRIPTION Pin Name I/O Description Pin No. REF - Analog reference voltage (1/2 VDD) 1 INL1 I Left channel input 1 2 INL2 I Left channel input 2 3 INL3 I Left channel input 3 4 IGOL O Left channel buffer output 5 VOLL I Left channel volume controller input 6 LOUDL I Capacitor node for left channel loudness 7 BASSL1 I Capacitor node 1 st for left channel bass filter 8 BASSL2 O Capacitor node 2 nd for left channel bass filter 9 TREL I Capacitor node for left channel treble filter 10 LOUT O Left channel output 11 SOUT O L+R mixer (mono) output 12 SIN I Low pass filter input 13 AGND I Analog ground 14 SCL I I²C clock input 15 SDA I I²C data input 16 DGND - Digital ground, connect with AGND in shortest route. 17 C1P I Node P for low pass filter ext cap 18 C1N I Node N for low pass filter ext cap 19 C2 I 2 nd node for low pass filter ext cap 20 SWOUT O Subwoofer output 21 OUTR O Right channel output 22 TRER I Capacitor node for right channel treble filter 23 BASSR2 O Capacitor node 2 nd for right channel bass filter 24 BASSR1 I Capacitor node 1 st for right channel bass filter 25 LOUDR I Capacitor node for right channel loudness 26 VOLR I Right channel volume controller input 27 IGOR O Right channel buffer output 28 INR3 I Right channel input 3 29 INR2 I Right channel input 2 30 INR1 I Right channel input 1 31 VDD - Power supply 32

V1.1 5 August, 2009 IMPORTANT NOTICE Princeton Technology Corporation (PTC ) reserves the right to make co rrections, 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