參數(shù)資料
型號(hào): U2535B
英文描述: Preamplifier for IR Remote Control
中文描述: 前置放大器的紅外遙控器
文件頁數(shù): 1/6頁
文件大?。?/td> 71K
代理商: U2535B
U2535B
Rev. A2, 15-Oct-98
1 (6)
Preamplifier for IR Remote Control
Description
The IC U2535B is a complete IR receiver for data com-
munication. The PIN photodiode converts the transmitted
IR telegram into electronic input signals. This is sepa-
rated by a special input circuit. The characteristics (filter,
gain) of the following amplifier are determined by exter-
nal components. The signal detector, consisting of a
comparator, an integrator and a Schmitt trigger, forms the
input signal to an output pulse that can be interfaced to a
microcomputer.
Features
Low current requirement (typical 260 A/ 12 V)
Carrier frequencies 20 to 100 kHz
Supply voltages:
5 or 7 to 16 V with internal stabilization
Filter characteristics and gain are specified by few
external components
Demodulator with Schmitt trigger
Open collector output
Applications
Keyless entry
Remote control
Wireless data transfer
Ordering Information
Extended Type Number
U2535B-FP
Block Diagram
95 9958
Package
SO8
Remarks
Integrator
+V
CC
R
1
1
2
A0
3
C3
A1
C
1
C
2
R
2
C
3
5
7
4
V
S
1 k
10 F
V
S1
10 F
+V
O
SW
6
GND
8
IN
+
+
+
Supply voltage
for PIN diode
Figure 1. Block diagram
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