FX118 Description
The FX118 is a low-power, full-duplex frequency inverter available to provide voice privacy for cordless telephone systems by mixing the ining audio with an internally produced carrier frequency (3.3kHz). This chip contains two pletely separate audio channels (C1 and C2) each prising a “ponentadjustable” input amplifier, a 10th-order lowpass filter, a balanced modulator and a 14th-order bandpass filter output. The...