Description
The U4313B 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 less than 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
Inverting clamping comparator with amplitude depending hysteresis for data regeneration