GL3276 データシートの表示（PDF） - Hynix Semiconductor

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GL3276

infrared remote control system receiving preamplifiers.

Hynix Semiconductor 

GL3276A

GL3276A

Description

The GL3276A is a bipolar analog ICs specifically

developed for use in infrared remote control system

receiving preamplifiers. Capable of accepting a

photodiode directly, these ICs house a high gain

initial amplifier, a limiter, a band-pass filter, a

detection circuit and a waveform shaping circuit

assembled on a single chip.

Features

• Less changes of malfunction associated with

a high-frequency lighting fluorscent lamp

internal trap circuit.

• The central frequency can be varied with an

external resistance:

fo=30 to 80KHz

fo rimming reduce central frequency variance.

• Few external parts.

Internal pull-up resistance and power filter

resistance.

Lower-capacitance external capacitor

• Open collector output

Open collector output with a pull-up resistance.

Block Diagram

Pin configuration

(SOP)

VCC1

Out

VCC2

fo

1

8

2

7

GL3276A

3

6

4

5

IN+

IN-

CD

GND

4

f0

3 VCC2

RS

1 VCC1

IN+

20

ABLC

Initial

Stage

amplifier

IN-

7

R1

C1

Limiter

BPF

+

TRAP

Detector

GND

5

CD

20

C2

RL

OUT

2

OUTPUT

1

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