GL3276
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
VCC1 Out VCC2 fo
1 2 GL3276A 3 4
8 7 6 5
IN+ INCD GND
Block Diagram
4 3 f0
VCC2 RS
VCC1
BPF Initial Stage amplifier Limiter + TRAP
Waveform shaper
IN+
Detector
RL...
