U4311B-MFSG3 Datasheet

Low-Current Superhet Remote Control Receiver


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.

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



Manufacturer information

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