Tel : 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 6-Channel Audio Processor IC PT2322 DESCRIPTION PT2322 is a 6-Channel Audio Processor IC utilizing CMOS Technology specially designed for audio applications. 6-channel individual input, 6-channel master volume control, 6-channel individual volume trim control, 3-band tone control (treble, middle, and bass), mute function, 3D effect function, tone defeat function are all built into a single chip having the highest performance and reliability with the least components. Furthermore, the pin assignments and application circuit are optimized for easy PCB Layout and cost saving benefits. Housed in 28 pins, DIP or SO Package, PT2322 is the ultimate answer to your every audio system needs. FEATURES • • • • • • • • • • • • • • • Very Low Power Consumption (DC=9V) I2 C Bus Control 6-Channel Individual Input 6-Channel Master Volume Control: 0 to -79 dB (1 dB/step) 6-Channel Individual Output TRIM Volume Control: 0 to -15 dB (1dB/step) 3-Band Tone Control (Treble, Middle, Bass): + 14dB , 2dB/step Mute Function 3D Effect Function Tone Defeat Function Low Noise High Channel Separation Low Harmonic Distortion Least External Components Easy to Use Available in 28-pin, DIP or SO Package APPLICATIONS • • • • • Audio/Video System Multi-Media Speakers TV System PC Audio AC3 Amplifier System PT2322 v1.0 Page 1 November 2002 PT2322 v1.0 Page 2 2 5 8 RJ1074 SURROUNDR 7 U1C SURROUNDL 9 SUBWOOFER 4 U1B CENTER 6 FRONTR 1 U1A FRONTL 3 R6 10uF 100K R5 10uF 100K C6 R4 10uF 100K C5 R3 10uF 100K C4 R2 10uF 100K C3 R1 10uF 100K C2 C1 10uF Cref 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R16 6.2K 28 27 26 25 24 23 22 21 20 19 18 17 16 15 R15 6.2K 10uF R12 100K 10uF R11 100K C12 10uF R10 100K C11 10uF R9 100K C10 10uF R8 100K C9 10uF R7 100K C8 C7 DGND I2CCLOCK I2C DATA 8 7 9 5 4 6 2 1 3 U2C U2B U2A TO MICROCONTROLLER SURROUNDR SURROUNDL SUBWOOFER CENTER FRONTR FRONTL 6-Channel Audio Processor IC R13 3.3K C13 C15 C16 C19 C20 2200p0.01u 0.01u 0.1u 0.1u RCMID2 RCBAS1_FR RCMID1 RCBAS2_FR CTRE_FR GND IN_FR SDA IN_SR SCL IN_SUB OUT_FR VREF OUT_SR GND OUT_SUB IN_CT VCC IN_SL OUT_CT IN_FL OUT_SL CTRE_FL OUT_FL RCMID1_FL RCBAS2_FL RCMID2_FL RCBAS1_FL IC1 PT2322 C14 C17 C18 C21 C22 2200p0.01u 0.01u 0.1u 0.1u R14 3.3K C23 22uF VCC Tel : 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2322 APPLICATION CIRCUIT November 2002 Tel : 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 6-Channel Audio Processor IC PT2322 ORDER INFORMATION PT2322 v1.0 O rder Part Number Package Type Top Code PT2322 28 Pins, DIP Package (600 mil) PT2322 PT2322-S 28 Pins, SO Package (330 mil) PT2322-S Page 3 November 2002