Control System. DF0038B Datasheet
IR Preamplifier for
Remote Control System
DF0038B IR Preamplifier for Remote Control System
The DF0038B is a high performance infrared remote control preamplifier. Especially, it
has excellent interference suppression capability. The infrared pulses arriving at the
photodiode are treated by the trans-impedance amplifier and amplified by the auto-gain
control amplifier, limiter amplifier, and band-pass filter. The following evaluation circuits,
including the comparator, integrator, and schmitt-trigger, demodulate the transmitted
digital signal. Reduction of sensitivity due to external interference is achieved by the
short-time boost and long-time control circuits, which prevent interference voltages from
affecting the output.
Only Two External Components Required Other than the Photodiode.
Easy to Integrate into Module due to Small Chip Size.
Minimized Chances of Malfunction Due to Ambient Light.
Low Power Consumption.
Center Frequency of Band Pass Filter Adjustable by an External Resistor.
IR Remote Control Receivers for Consumer Electronic Products, such as TVs, VCRs,
VCD/DVD Players, Audio Devices, Air Conditioners, Electric Fans...etc.
PIN 1: GND
PIN 2: Vs
PIN 3: OUT
Power supply pin.
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