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Datasheet File OCR Text: |
HS9812R-PPM PPM MULTIPLEX RECEIVER/DECODER GENERAL DESCRIPTION The hs9812 is a CMOS integrated circuit used for the (pulse-position-modulation) PPM stereo demodulator. It is designed for use in 2~3v infrared cordless headphones systems. FEATURE: Low voltage and low power consumption. Low power dissipation (Idd=1mA(max.)at ta=25 Wide operating voltage range (Vdd=2 ~ 5v) Free adjustment for PPM detector. No RF coils and detects coil. PACKAGE OUTLINES .) 13.96 13.98 NOTES 7.6 7.4 10.6 10.2 1. Controlling dimensions are in mm. 2. Signets ordering code for a product Packaged in a plastic small outline (so) packaged is the suffix D after the product number . 1.27 14.6 14.8 0.75 0.52 X45O X45O 8O 0O 0.2 0.5 2.65 2.35 0.32 0.23 0.3min HS9812 : 24-lead DIL ; plastic (with internal heat spreader) (SOT146EE7) . HS9812S:24-lead mini-pack ; plastic (SOP24 ; SOT163A) . HS9812 Block Diagram 23 22 INSW-1 4CH DET 21 INTEGRATED CIRCUIT 20 19 18 17 16 15 14 DET-1 1 AMP 1 PA2 SYNC DET-2 2 AMP PA1 11 2 3 4 5 6 7 8 9 10 13 Pin Description NO 1 2 3 4 5 6 7 8 9 10 11 12 NAME NBYP MUTE1 SYNC MODE DET DEOUT OP+IN OP-IN OUT 1 VDD2 IR IN GND DESCRIPTION NOISE BYPASS MUTE LEVEL CONTROL SYNC RESISTOR ADJ MODE CONTROL DET(1) RESISTOR DET1 OUTPUT OP AMP INPUT(+) OP AMP INPUT(-) AMP OUTPUT(1) AC BYPASS VDD(2) IR SIGNAL IN POWER GROUND NO 13 14 15 16 17 18 19 20 21 22 23 24 NAME AGC2 CAP I CAP O AGC1 OUT2 OP-IN DEOUT DET MUTE2 INSW ILC VDD DESCRIPTION AGC AC BYPASS INPUT PIN IR AMP OUTPUT PIN IR AMP AGC LOW PASS FILTER AMP OUTPUT(2) OP AMP INPUT(-) DET OUTPUT(2) DET RESISTOR(2) MUTE OUTPUT SELECT CHANNEL LEVEL CONTROL POWER SUPPLY Application Circuit VR1 VR10K C14 C15 472 1u SPK2 64 SW3 BAND C18 102 R5 8K2 C13 47u C16 472 R8 SW1 PWR 1K R7 82K C17 1u R6 220K C12 104 C11 56P C10 104 BT1 2V-3V U1 R2 120K R3 220K HS9812R-PPM IR1 IRR C5 472 C6 472 R1 20K C4 102 VR1 VR10K R4 8K2 C7 1u C8 47u C9 47u SPK1 64 C1 47u C2 56P C3 1u SW2 MODE Title Size A Date: Document Number Rev 1 1 of 1 HS9812R-PPM DESIGN: Sheet Tuesday, March 07, 2000 COSMOSIC SEMICONDUCTOR CO. TEL:(02)8211-1396 FAX:(02)8211-1360 |
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