What is LM1893?
This is LM1893/LM2893 Carrier-Current Transceiver. |
[PDF] Complete Technical Details can be found in the
LM1893 datasheet
provided at this page.Summary in PDF FileLM1893 LM2893 Carrier Current Transceiver April 1995 LM1893 LM2893 Carrier Current Transceiver General Description Carrier current systems use the power mains to transfer information between remote locations This bipolar carriercurrent 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 Y Y Y Y Y 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 lines Applications Y Y Y Features Y Y Y Y Y Y Y Y Y Y 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 Energy management systems Home convenience control Inter office communication Appliance control Fire alarm systems Security systems Telemetry Computer terminal interface Typical A |
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[ Detailed Data ] |
Manufacturers : National Semiconductor  |
NATIONAL LM1893 TRANSCEIVER LM1893/LM2893 Carrier-Current Transceiver |
Datasheet LM1893 PDF DownLoad ( NATIONAL ) |