The CMX7158 from CML Microcircuits is a low-power, full-duplex, inverter voice scrambler chip. This type of encryption is suitable for many personal, enterprise, and commercial applications to block eavesdropping from fellow users or RF scanners.
With a flexible analog interface that allows CMX7158 to be plugged into existing speech paths, the device is suitable for use in new designs, integrated into existing designs, or as a stand-alone attachment. Full duplex operation makes it suitable for wired audio systems as well as mobile and handheld cellular, Bluetooth, PMR or LMR radio systems.
The CMX7158 features programmable inverter frequency division points and has fully independent transmit and receive voice channels, each with digital gain control. Three modes of operation allow gibberish or clear speech transmission with higher bandwidth bypass modes are also supported.
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