GL3276A Datasheet, PDF (1/4 Pages) Hynix Semiconductor – Less changes of malfunction associated with a high-frequency lighting fluorscent lamp internal trap circuit.

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
R_S
1 _VCC1
IN+
20
ABLC
Initial
Stage
amplifier
IN-
7
R₁
C₁
Limiter
BPF
+
TRAP
Detector
GND
5
C_D
20
C₂
R_L
OUT
2
OUTPUT
1