LMX2411 Datasheet | National Semiconductor

Description The LMX2411 is a monolithic integrated baseband processor suitable for use in Digital European Cordless Telemunications (DECT) systems as well as other mobile telephony and wireless munications applications It is fabricated using National’s ABi C IV Bi CMOS process (f T e 15 GHz) The LMX2411 contains both transmit and receive functions The transmitter utilizes a low power high speed digital-toanalog converter (DAC) and a mask programmable Read Only Memory (ROM) to generate a Gaussian filter pulse shape The receiver includes a high speed low power voltage parator for making hard decisions on ining data and a CMOS switch coupled with a sample and hold circuit for DC pensation Supply voltage can range from 2 85V to 3 6V The LMX2411 features very low current consumption of 2 5 m A transmit and 5 m A receive (steady state) It also has separate power down pins for transmit and receive functions to further reduce power consumption The LMX2411 can be used with the LMX2216B LNA Mixer the LMX2240 IF Receiver and the LMX2320 Phase-Locked Loop to form a plete RF front end solution These chips form the major blocks of an RF front end solution for DECT The LMX2411 is available in a 16-pin JEDEC surface mount plastic package Features High speed voltage parator (40 ns settling time) Generates Gaussian filtered modulating signal for a direct VCO modulator Bit rates to 1 152 Mb s (DECT) Supports 10 368 13 824 and 18 432 MHz system clocks through pin selection On-chip DC pensation circuit Average current consumption 0 6 m A for DECT handset (burst mode operation) Power down mode for extended battery life patible with Sierra SC14400 and Philips PCD5040 DECT Burst Mode Controllers Applications Digital European Cordless Telemunications (DECT) Portable wireless munications (PCS PCN cordless) Wireless local area networks (WLANs) Other wireless munications systems This data sheet contains the design specifications for product development Specifications...