U4311B-FS Datasheet PDF - ATMEL

●Description

●The U4311B-FS 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 output 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