NE612

The NE612 is an integrated circuit for processing of signals, such as in the transmission of radio signals. It consists of an oscillator and a mixer.^[1]

Block diagram

It can handle signal frequencies of up to 500 MHz and local oscillator frequencies of up to 200 MHz.

The mixer is a “Gilbert cell” multiplier configuration which provides both a gain of 14 dB and a noise figure of 5 dB at 45 MHz.^[1]

The IC belongs to a family of the following ICs: NE602, SA602, NE612 and SA612. It is widely used in amateur radio applications,^[2] e.g. in the commercial Elecraft products, and others.