FX128
FX128 is Audio Band Scrambler manufactured by CML.
Features
- Full-Duplex Audio Processing
- On-Chip Filters
- Carrier Rejection >55d B
- Uses IF (10.24 MHz) Clock
- Excellent Audio Quality
- Low Power Operation (3.0V)
- Battery Powered Portability
Applications
- Cordless Telephones
- Wireless PBX
- Two-Way Radio
- Leisure Radio
(FRS, GMRS, MURS, PMR446)
1.1 Brief Description
The FX/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 k Hz inversion carrier (injection tone). 3. A 3100 Hz lowpass filter. 4. Input op-amps with externally adjustable gain. The FX/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...
