FEATURES DESCRIPTION APPLICATIONS BLOCK DIAGRAM. PT W Stereo Integrated Audio Amplifier

Transcription

1 0W Stereo Integrated Audio Amplifier DESCRIPTION The PT830 is an integrated audio amplifier design for the compact audio system; the maximum output power is up to 0W x. Utilizing PTC exclusive, patented Class-D modulation circuit, compare with traditional Class-AB amplifier, the PT830 have a lot of benefit for high efficiency, low heat dissipation and very low harmonic distortion. Thanks for highly integrated design, consist a complete audio amplifier system is easy and only needs few external components, no more complex PCB wiring and saving the PCB sizes. APPLICATIONS LCD TV Docking Speaker System Other audio applications FEATURES 0W/8Ω (THD=0%) output power 4 stereo sources input Volume, bass and treble control Audio line out for second power amplifier Built-in 5V regulator Improved RF interference immunity 4 power amplifier voltage gain selectable External mute output Low harmonic distortion (0.05%), superior sound quality IC bus controls Over current and temperature protection Low EMI emission 48 Pins, E-LQFP ( thermal pad included) package BLOCK DIAGRAM LB LB LT LOUT INLP INLN INL INL IN INPUT SEL VOLUME BASS TREBLE L-CH Amplifier 5V Reg Managment UV/OV/OC Thermal Protection IC DE-POP INR INR IN VOLUME BASS TREBLE R-CH Amplifier INPUT SEL RB RB RT ROUT Tel: Fax: F, 33-, Baociao Rd., Sindian Dist.,New Taipei City 345, Taiwan

2 V.0 July 03 APPLICATION CIRCUIT C C C9 C0 C3 C4 C5 C6 L L R R C 80p C7 C8 R 8.K C 80p C9 C0 R 8.K C4.uF C3 C3 F L L R R C30 0. C9 0. C6 0uF C7 0uF C5 0uF C8 0. C8 C7 C6 C5 L5 uh uh uh L uh U4 R-SPK U5 L-SPK U3 C3 470uF VDD 3L G R UA 6L 4G 5R UB 9L 7G 8R UC 3L G R UA OUTR+ OUTR- OUTL- OUTL+ +V GND ROUT 0 RB RB RT 3 INR 4 INR 5 6 IN IN 0 INL INL LT 3 LB 4 LB 5 LOUT 6 INLP 7 INLN 8 DGND IC PT830 IN IN IN3 IN4 C C C4 C3 MUTE OUT C33 C34

3 ORDER INFORMATION Valid Part Number Package Type Top Code PT830-LQ 48 Pins, E-LQFP, 7 X 7 mm PT830-LQ PIN CONFIGURATION ROUT RB RB LB LT INL INL IN IN INR INR RT DGND INLN INLP LOUT LB V.0 3 July 03

4 PIN DESCRIPTION Pin Name I/O Description Pin No. O Right channel output (+) O Right channel output (+) supply of control circuit 3 Ground of control circuit 4 Ground of analog circuit 5 O Regulator bypass 6 I Internal voltage reference bypassing 7 I amp right channel input (-) 8 I amp right channel input (+) 9 ROUT O Right channel line out 0 RB I Capacitor for right channel bass controller RB I Capacitor for right channel bass controller RT I Capacitor for right channel treble controller 3 INR I Input of right channel 4 INR I Input of right channel 5 I Input 3 of right channel 6 IN I Input 4 of right channel 7 I/O Output Enable, with internal high resistance pull-up, usually 8 connects a cap to ground for turn-on delay. I Input 4 of left channel 9 IN I Input 3 of left channel 0 INL I Input of left channel INL I Input of left channel LT I Capacitor for left channel treble controller 3 LB I Capacitor for left channel bass controller 4 LB I Capacitor for left channel bass controller 5 LOUT O Left channel line out 6 INLP I amp left channel input (+) 7 INLN I amp left channel input (-) 8 DGND Digital GND for IC Ack. 9 I/O I C bus data Input 30 I I C bus clock Input 3 Ground of analog circuit 3 O External mute output 33 I Shutdown. Sets to low level will turn off whole chip and pull up to 34 High level for normal operation. O Left channel output (+) 35 O Left channel output (+) 36 Left channel power supply input 37 Left channel power ground 38 Left channel power ground 39 Left channel power supply input 40 O Left channel output (-) 4 O Left channel output (-) 4 O Right channel output (-) 43 O Right channel output (-) 44 Right channel power supply input 45 Right channel power ground 46 Right channel power ground 47 Right channel power supply input 48 V.0 4 July 03

5 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. F, 33-, Baociao Road, Sindian, Taipei 345, Taiwan Tel: Fax: V.0 July 03