LA8518NM - Signal Processor
Ordering number: EN5421 Monolithic Linear IC LA8518NM Signal Processor for Cordless Telephone Base Sets Functions Speech network block c 2-wire/4-wire conversion c Line driver c Transmitting amplifier c Receiving amplifier (with ATT) c Power supply switching circuit c Impedance matching c DTMF interface c Key tone interface c BN circuit network switching circuit (BN = Balancing Network) Signal processor block c Record preamplifier (with ALC) c Record amplifier c Power amplifier (VCC = 5 V, RL
LA8518NM Features
* c Because it is possible to switch the Balancing Network between two systems, one for the near end and one for the far end, in accordance with the line current, this IC provides excellent sidetone characteristics over a wide range of line currents. c Receiver amplifier supports ceramic receivers and
