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.
Pin configuration
(SOP)
•
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.
Features
V
CC1
Out
V
CC2
fo
1
2
GL3276A
3
4
8
7
6
5
IN+
IN-
C
D
GND
Block Diagram
4
3
f
0
V
CC2
R
S
1
V
CC1
20
BPF
Initial
Stage
amplifier
Limiter
+
TRAP
Waveform
shaper
IN+
Detector
R
L
OUT
2
OUTPUT
ABLC
IN-
7
GND
5
C
D
20
R
1
C
1
C
2
1