U4311B-MFL Datasheet

IC型號(hào)：
U4311B-MFL
PDF描述：
Consumer IC
文件大小：
98.97KB
PDF頁數(shù)：
15頁
芯片廠家：
ETC

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U4311B

Low-Current Superhet Remote Control Receiver

Description

The U4311B is a monolithic integrated circuit in bipolar

technology for low-current UHF remote control super-

heterodyne receivers in amplitude- or frequency-

modulated mode. Typical applications are keyless car

lock-, alarm- or tele-control remote indication systems.

Especially for automotive applications, it supports a

superhet design with about 1 mA total current

consumption as required by the car manufacturers.

Features

Usable for amplitude- and frequency-modulated

transmission systems

Extremely low quiescent current (approximately

1 mA in standby mode due to wake-up concept)

Wide power supply voltage range 3 to 13 V

Sensitive IF amplifier for 10.7-MHz operating

frequency

Logarithmic AM demodulator

FM demodulator

Monoflop exit to wake up a microcontroller

High-performance operational amplifier to realize a

data recovering filter

Non-inverting clamping comparator with amplitude-

depending hysteresis for data regeneration

Block Diagram

Wake-up out

Ref

= 2.4V 13

Bandgap

Internal

Ref

= 2.4 V

Monoflop

Level

Wake up

Non 鈥?invert.

clamping

comparator

Data out

10.7 MHz

amplifier

Quadrature

detector

Operational

amplifier

鈥?/div>

log AM out

10.7 MHz

Figure 1. Block diagram

FM out

Data

filter

95 9968

Ordering Information

Extended Type Number

U4311B-M

U4311B-MFL

Package

DIP16

SO16L

Remarks

Rev. A3, 28-Sep-00

1 (15)

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