Audio Band Scrambler

The FX128 MX128 is a full-duplex frequency inversion scrambler designed to provide secure conversations. The Rx and Tx Audio paths consist of the following: 1. A switched-capacitor balanced Modulator with high baseband and Carrier rejection. 2. A 3.3 kHz inversion Carrier (injection tone). 3. A 3100 Hz lowpass Filter 4. Input op-amps with externally adjustable gain. The FX128 MX128 uses mixed signal CMOS switched-capacitor Filter technology and operates from a single supply in the range of 3.0 to 5.5 volts. The inversion carrier's frequency and Filter switching Clock are generated on-chip using an external 10.24 MHz or 3.58/3.6864 MHz crystal or Clock input (selectable). This device is available in the following package styles: 16-pin SOIC,TSSOP and PDIP. By Consumer Microcircuits Limited
MX128 's PackagesMX128 's pdf datasheet

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MX128 Application circuits
MX128 circuits
This is one application circuit of MX128,If you need more circuits,please download MX128's pdf datasheet.

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