LMX4168 Datasheet | National Semiconductor

description The LMX4168 is a radio transceiver integrated circuit optimized for the Digital Enhanced Cordless Telemunications (DECT) system. The transceiver, when bined with a power amplifier and a Tx/Rx switch, implements a plete DECT radio transceiver pliant with the ETSI CTR6 standard. The LMX4168 interfaces to National Semiconductor’s SC144XX DECT family of baseband processors. The LMX4168 integrates a plete transmitter, consisting of a phase locked loop, VCO and PA driver. The receiver contains LNA, quadrature downconverter, polyphase filter/biner, automatic gain control, and demodulator. The LMX4168 operates from a single 2.25- 2.75V supply. The LMX4168 is manufactured in National’s 0.25µm CMOS technology, and is packaged in a 44 pin LLP package 2.0 Features - Highly integrated 1.9 GHz low-IF CMOS transceiver - Down conversion to half the DECT channel spacing (864 k Hz) - On-chip channel select filter - On-chip Voltage Controlled Oscillator (VCO) - On-chip low noise amplifier (LNA) - Open-loop modulation - On-chip timing control - Four digital (5 m A) output ports - 0 d Bm PA driver output - -95 d Bm sensitivity - 2.5V operation - Small 44 pin Leadless Leadframe Package 3.0 Applications - (DECT) Digital Enhanced Cordless Telemunications 4.0 System Diagram AGC DEMOD. DEMOD. BALUN LNA RSSI 0° 90° DATA MICROWIRE PA BALUN PADR X2 CLOCK LE RX_DATA PORTS BIAS TXDATA R REF © 2004 National Semiconductor Corporation .national. 5.0 Specifications 5.1 ABSOLUTE MAXIMUM RATINGS Table 1. Absolute Maximum Ratings1 Parameter Vdd_max Description Power supply voltage (Vdd_ADC, Vdd_IF, Vdd_mix, Vdd_LNA, Vdd_ESD, Vdd_PAdr, Vdd_presc, Vdd_PLL, Vdd_VCO, Vdd_shield, Vdd_bias, Vdd_dig, Vdd_RSSI) Absolute difference between power supplies Vn Pin TS TL VHBM VMM 1. Voltage on any pin Input power (at pins Rxin, Rxin Z) Storage temperature Lead temperature (solder 4 sec) ESD - human body model2 ESD - machine model2 -65 -0.3 0.3 Vdd+0.3 +15 +150 + 260 2 250 V V d Bm °C °C...