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參數資料
| 型號： | LM1872N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | Radio Control Receiver/Decoder |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP18 |
| 封裝： | PLASTIC, DIP-18 |
| 文件頁數： | 1/19頁 |
| 文件大小： | 371K |
| 代理商： | LM1872N |
TL/H/7912
L
February 1989
LM1872 Radio Control Receiver/Decoder
General Description
The LM1872 is a complete RF receiver/decoder for radio
control applications. The device is well suited for use at ei-
ther 27 MHz, 49 MHz or 72 MHz in controlling various toys
or hobby craft such as cars, boats, tanks, trucks, robots,
planes, and trains. The crystal controlled superhet design
offers both good sensitivity and selectivity. When operated
in conjunction with the companion transmitter, LM1871, it
provides four independent information channels. Two of
these channels are analog pulse width modulated (PWM)
types, while the other two are simple ON/OFF digital chan-
nels with 100 mA drive capability. Either channel type can
be converted to the other form through simple external cir-
cuitry such that up to 4 analog or up to 4 digital channels
could be created. Few external parts are required to com-
plement the self-contained device which includes local os-
cillator, mixer, IF detector, AGC, sync output drivers, and all
decoder logic on-chip.
Features
Y
Four independent information channels; two analog and
two digital
Y
Completely self-contained
Y
Minimum of external parts
Y
Operation from 50 kHz to 72 MHz
Y
Highly selective and sensitive superhet design
Y
Operates from four 1.5V cells
Y
Excellent supply noise rejection
Y
100 mA digital output drivers
Y
Crystal controlled
Y
Interfaces directly with standard hobby servos
Applications
Y
Toys and hobby craft
Y
Energy saving, remotely switched lighting systems
Y
Burgler alarms
Y
Industrial and consumer remote data links
Y
IR data links
Y
Remote slide projector control
Circuit Block and Connection Diagram
Dual-In-Line Package
TL/H/7912–1
Bottom View
Order Number LM1872N
See NS Package Number N18A
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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