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 telecontrol 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 the stand-by 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