描述 Description

General Description
Carrier-current systems use the power mains to transfer in formation between remote locations. This bipolar carrier current chip performs as a power line interface for half-duplex (bi-directional) communication of serial bit streams of virtually any coding. In transmission, a sinusoidal carrier is FSK modulated and impressed on most any power line via a rugged on-chip driver. In reception, a PLL-based demodulator and impulse noise filter combine to give maximum range. A complete system may consist of the LM1893, a COPSTM controller, and discrete components.

特性 Features

Noise resistant FSK modulation
User-selected impulse noise filtering
Up to 4.8 kBaud data transmission rate
Strings of 0’s or 1’s in data allowed
Sinusoidal line drive for low RFI
Output power easily boosted 10-fold
50 to 300 kHz carrier frequency choice
TTL and MOS compatible digital levels
Regulated voltage to power logic
Drives all conventional power linesApplications
Energy management systems
Home convenience control
nter-office communication
Appliance control
Fire alarm systems
Security systems
Telemetry
Computer terminal interface