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DF0038B

Tide
Part Number DF0038B
Manufacturer Tide
Description IR Preamplifier for Remote Control System
Published Dec 10, 2005
Detailed Description Product Specification DF0038B IR Preamplifier for Remote Control System w w w .d e e h s a t a . u t4 m o c No:...
Datasheet PDF File DF0038B PDF File

DF0038B
DF0038B

Overview
Product Specification DF0038B IR Preamplifier for Remote Control System w w w .
d e e h s a t a .
u t4 m o c No: TDSPEC2006E Date: 2002.
10.
www.
DataSheet4U.
com Tide Microelectronics DF0038B IR Preamplifier for Remote Control System GENERAL DESCRIPTION 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.
FEATURES 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.
Microcomputer Compatible.
APPLICATIONS IR Remote Control Receivers for Consumer Electronic Products, such as TVs, VCRs, VCD/DVD Players, Audio Devices, Air Conditioners, Electric Fans.
.
.
etc.
PIN CONFIGURATONS PIN DESCRIPTIONS PIN 1: GND PIN 2: Vs PIN 3: OUT Ground.
Power supply pin.
Output pin.
2 of 2 Tide Microelectronics DF0038B IR Preamplifier for Remote Control System BLOCK DIAGRAM BLOCK DESCRIPTION AUTOMATIC BIAS LEVEL CONTROL An ABLC (Automatic Bias Level Control) circuit is built into the input section to prevent the input level from being saturated by the external disturbing lights, such that this circuit is actuated by a strong external disturbing light to fix the bias level of the input terminal.
TRANS-IMPEDANCE AMPLIFIER (T.
I.
A.
) The Trans-impedance amplifier is an inverted amp...


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