NJM2035 - High Quality Stereo Encoder / Multiplexer IC
NJM2035 IC allows any MONO FM transmitter to transmit a crystal clear STEREO signal. This is the simplest and the most popular stereo encoder that you can build, yet one that provides high quality stereo sound transmission and excellent channel separation.
Voltage Supply: 1.2 - 3.6V
Power Consumption: < 3mA