U2538B
| Model | U2538B |
| Description | IR RECEIVER FOR DATA COMMUNICATION |
| PDF file | Total 9 pages (File size: 170K) |
| Chip Manufacturer | ATMEL |
Features
•
•
•
•
Few External Components
Low Power Consumption
Microcomputer Compatible
Insensitive to Ambient Light and Other Continuous Interferences
Applications
•
Keyless Entry Systems
•
Remote Control
•
Wireless Data Transfer up to 4 kbit/s
Description
The IC U2538B is a complete IR receiver for data communication. The useful input
signals are separated by a special input circuit and amplified by a gain-controlled
amplifier. The bandpass filter suppresses the off-band signals. The signal detector,
consisting of a demodulator, an integrator and a Schmitt trigger, forms the input signal
to an output pulse that can be interfaced to a microcomputer. The AGC and the ATC
circuit control the receiver's sensitivity, making it insensitive to ambient light sources.
Figure 1.
Block Diagram with Typical Circuit
V
S
IR Receiver for
Data
Communication
U2538B
U2538B
Input
Amplifier
and filter
Detector
mC
AGC/ATC
Modulated IR signal
carrier frequency 20 to 60 kHz
minimum 6 pulses/burst
Rev. 4717A–IRRC–05/03
1
Related PDFs
| Model | Description | Manufacturer | Operation |
|---|---|---|---|
 U2538B-MFP
|
IR RECEIVER FOR DATA COMMUNICATION | ATMEL | Preview |
|
U2538B-MFPG3
|
IR RECEIVER FOR DATA COMMUNICATION | ATMEL | Preview |
