CML Micro CMX469A FFSK Modems
CML Micro CMX469A FFSK Modems are CMOS LSI circuits that operate as full-duplex 1200, 2400, or 4800 baud FFSK (Fast Frequency Shift Keying) modems. A standard Xtal oscillator is employed with two clock frequencies (1.008MHz or 4.032MHz) to provide baud rate, transmit frequencies, and Rx and Tx synchronization. The CMX469A modems include circuitry for Carrier Detect and Rx Clock recovery, available as output pins. Rx, Tx, and Carrier Detect paths contain a bandpass filter to ensure optimum signal conditions.
CMX469A devices demonstrate a high sensitivity and good bit-error-rate under adverse signal conditions. This low-power device requires few external components and is available in small outline plastic SOIC and TSSOP packages.
Features
- 1200/2400/4800 baud selectable data rates
- Full duplex FFSK
- Rx and Tx bandpass filters
- 2.7V to 5.5V power supply
- Clock recovery and carrier detect facilities
- 1.008MHz or 4.032MHz pin selectable Xtal/clock inputs
- Simple control as no µP is required
- SOIC-20 or TSSOP-24 package options
- -40°C to +85°C operating temperature range
Applications
- Data-over-radio
- PMR and cellular radio signaling
- Automatic vehicle location (differential GPS) links
- Portable data terminals
- Personal/cordless telephone
- Industrial control signaling
Block Diagram
Publié le: 2019-11-19
| Mis à jour le: 2023-08-02