HS9812R-PPM ETC1 | Alldatasheet

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Technical content

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 1. Controlling dimensions are in mm. 2. Signets ordering code for a product Packaged in a plastic small outline 7.6 10.6 (so) packaged is the suffix D after the 7.4 10.2 product number . 1.27 14.6 0.75 X45O 14.8 0.52 X45O 2.35 0.23 HS9812 : 24-lead DIL ; plastic (with internal heat spreader) (SOT146EE7) . HS9812S:24-lead mini-pack ; plastic (SOP24 ; SOT163A) .

23 22 21 20 19 18 17 16 15 14 INSW-1 4CH DET-1 AMP DET PA1 11 PA2 SYNC DET-2 AMP 2 3 4 5 6 7 8 9 10 13 Pin Description NO NAME DESCRIPTION NO NAME DESCRIPTION

1 NBYP NOISE BYPASS 13 AGC2 AGC AC BYPASS

2 MUTE1 MUTE LEVEL CONTROL 14 CAP I INPUT PIN IR AMP

3 SYNC SYNC RESISTOR ADJ 15 CAP O OUTPUT PIN IR AMP

4 MODE MODE CONTROL 16 AGC1 AGC LOW PASS FILTER

5 DET DET(1) RESISTOR 17 OUT2 AMP OUTPUT(2)

6 DEOUT DET1 OUTPUT 18 OP-IN OP AMP INPUT(-)

7 OP+IN OP AMP INPUT(+) 19 DEOUT DET OUTPUT(2)

8 OP-IN OP AMP INPUT(-) 20 DET DET RESISTOR(2)

9 OUT 1 AMP OUTPUT(1) 21 MUTE2 MUTE OUTPUT

10 VDD2 AC BYPASS VDD(2) 22 INSW SELECT CHANNEL

11 IR IN IR SIGNAL IN 23 ILC LEVEL CONTROL

12 GND POWER GROUND 24 VDD POWER SUPPLY

A 1 1Tuesday, March 07, 2000 Title Size Document Number Rev Date: Sheet of 56P IR1 IRR C18 102 Application Circuit SW1 PWR SPK1 BT1 2V-3V R8 1K C15 472 C13 47u 82K 102 R6220K C11 56P C12 104 VR1 VR10K R2120K C16 472 R3220K SW3 BAND SW2 MODE 8K2 47u U1 HS9812R-PPM 472 SPK2 20K DESIGN: 472 C17 C14 COSMOSIC SEMICONDUCTOR CO. TEL:(02)8211-1396 FAX:(02)8211-1360