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

Pin Description

NO. SYMBOL

1

VCC1

3

VCC2

5

GND

Power input

Power output

Ground

8

IN +

Input

7

IN -

Initial amplifier

Gain setup

BPF

4

fo

frequency

setup

6

CD

Detection

capacitor

2

OUT

Output

PIN FUNCTION

• Apply a voltage of 5V ¡ ¾10 % to pin 1.

As the power is output to pin 3 through the internal

power filter resistance, connect an electrolytic

capacitor to pin 3.

• With an internal impedance of 110 K§ Ù(typ.) pin 8

can accept a PIN photodiode directly. An automatic

bias level control (ABLC) circuit prevents the input

from being saturated by external light,

assuring bias level stability for the input pin.

• Initial amplifier differential inverted output. Its gain

can be set up with an external impedance.

• The central frequency of the band-pass filter can be

varied with an external resistance. A built-in trap

circuit prevents malfunctions associated with a high-

frequency lighting fluorescent lamp.

• Pin to which a detection capacitor is connected.

• Open collector output with pull-up resistance.

Its capability to drive a CMOS or TTL makes for easy

connection with a receiving microcomputer.

The GL3276A has an active low output.

Sample Application Circuits

8 Pin Plastic

SOP

Photo diode

C1 1500pF 0.01µF

R1 0 to 1k

8

7

IN + IN -

6

5

CD

GND

GL3276A

VCC1

OUT

VCC2

f0

1

2

3

4

Power

supply

Output

130 k§ Ù(R2)

47 µF

3

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