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February 25, 1997updated 05 Sep 2016 12:14pm


By CBR Staff Writer

National Semiconductor Corp claims to be first to market with a single chip radio receiver-transmitter for the European Digital Enhanced Cordless Telecommunications standard – the cordless phone standard that can also be used in enhanced Telepoint applications. Called the LMX3161, it is offered with the LMX2119 power amplifier and specialized SC14401 base-band processor for use in band-sets, or a specialized base-band processor with embedded echo cancellation for base-station implementations, to provide a complete Digital Enhanced Cordless Telecommunications implementation. The company reckons that integration of a phase-locked loop with the rest of the radio is a particular achievement. Fabricated in a BiCMOS process, the LMX3161 integrates all transmit and receive functions and contains a 1.1GHz phase-locked loop; a 2.0GHz frequency doubler; a low noise amplifier; a high frequency buffer; a 2.0GHz low noise mixer; an intermediate frequency amplifier; a high gain limiting amplifier; a frequency discriminator; a received signal strength indicator; and an analog DC compensation loop. The LMX3161 and LMX2119 can be used in residential cordless telephony, wireless PABX, wireless local area network, radio local loop, and public access systems. The LMX3161VBH will be available for general sampling next quarter, with full production quantities planned for the third quarter at $5.80 for 100,000-up; the LMX2119M power amplifier is sampling already at $2.75 in 100,000-up quantities.

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