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| Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Satellite + Subwoofer 3-Speaker System Electronics Crossover IC PT2353 DESCRIPTION PT2353 is a 3-speaker system electronic crossover IC utilizing CMOS Technology specially designed for the new generation of audio equipments. 3-channel electronic volume control, 2-channel 2nd order high pass filter, 2nd order low pass filter and one mono subwoofer audio output are incorporated into a single high performance chips. PT2353 combines the electronic volume controller and crossover circuitry without MCU handling. Pin assignments and application circuit are optimized for easy PCB layout and cost saving advantages. FEATURES * * * * * * * * CMOS Technology Low Power Consumption 2 Built-in Individual Volume Control: 0 dB to -60dB 2-Channel 2nd Order High Pass Filter + 1 Mixed Mono Subwoofer Low Pass Filter Cross-Over Frequency adjustable by external passive components Control Interface of Volume Control: UP/DOWN Key (MCU is not necessary) Built-in 3D Effect and Loudness Function Supply Voltage: 5V to 9V APPLICATION * Audio Equipments PT2353 v1.1 -1- November, 2003 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Satellite + Subwoofer 3-Speaker System Electronics Crossover IC PT2353 BLOCK DIAGRAM LIN Main Volume REF HPF 3D Effect Circuit HPF LOUT ROUT RIN Main Volume REF VDD REF VSS REF + + + LPF Subwoofer Volume + REF SOUT Control Unit 3D MUP SUP SDW 3D PK PO PT2353 v1.1 -2- November, 2003 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Satellite + Subwoofer 3-Speaker System Electronics Crossover IC PT2353 PIN CONFIGURATION 3D_LED VDD ROUT RIN RT CR1 CR2 CR3 C2 REF C1N C1P SOUT PO PT2353 PT2353 v1.1 -3- November, 2003 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Satellite + Subwoofer 3-Speaker System Electronics Crossover IC PT2353 APPLICATION CIRCUIT VDD 9V 3D LED 3D VDD 9V 1 L OUT 100K 10uF VDD 9V 10uF L IN 100K /3D VSS LOUT LIN LT CL1 CL2 3D_LED VDD ROUT RIN RT CR1 CR2 28 100uF 2 3 4 5 8n2 2K2 220 C REF C 27 26 10uF 100K R OUT 25 24 2K2 8n2 VDD 9V ** 1K ** BAV99 u33 ** 1K 10uF R IN 100K 6 7 8 23 220 u33 REF C ** BAV99 22 21 20 19 18 17 16 15 C CL3 PT2353 CR3 /SUP /SDW /MUP /MDW OSC /PK C2 REF C1N C1P SOUT PO /SUP 9 10 11 12 13 14 /SDW REF 100uF C2 /MUP /MDW C1 33K 10uF S OUT 100K 2u2 Power Key * Notes: 1. Please refer to the PT2353 Crossover Frequency Response Curve for the values of C, C1, and C2. 2. Please refer to Power Control (PO) Section of this document. 3. ** For input port high voltage pulse protection. PT2353 v1.1 -4- November, 2003 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Satellite + Subwoofer 3-Speaker System Electronics Crossover IC PT2353 ORDER INFORMATION Valid Part Number PT2353 PT2353-S Package Type 28 Pins, DIP Package (600 mil) 28 Pins, SO Package (300 mil) PT2353 v1.1 -5- November, 2003 |
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