LMX4168FLQ ,Radio Transceiver for DECT [Not recommended for new designs]FeaturesThe LMX4168 is a radio transceiver integrated circuit opti- ■ Highly integrated 1.9 GHz low ..
LMX4168FLQ ,Radio Transceiver for DECT [Not recommended for new designs]Applications■ (DECT) Digital Enhanced Cordless Telecommunications4.0 System DiagramAGCRX_DATADEM DE ..
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LMX4168FLQ
Radio Transceiver for DECT [Not recommended for new designs]
dio Transc
ver for D
ADVANCED INFORMATIONMarch 2004
LMX4168
Radio Transceiver for DECT
1.0 General descriptionThe LMX4168 is a radio transceiver integrated circuit opti-
mized for the Digital Enhanced Cordless Telecommunica-
tions (DECT) system. The transceiver, when combined with
a power amplifier and a Tx/Rx switch, implements a com-
plete DECT radio transceiver compliant with the ETSI
CTR6 standard. The LMX4168 interfaces to National Semi-
conductor’s SC144XX DECT family of baseband proces-
sors.
The LMX4168 integrates a complete transmitter, consisting
of a phase locked loop, VCO and PA driver. The receiver
contains LNA, quadrature downconverter, polyphase fil-
ter/combiner, 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 pack-
age
2.0 Features Highly integrated 1.9 GHz low-IF CMOS transceiver Down conversion to half the DECT channel spacing (864
kHz) 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 mA) output ports 0 dBm PA driver output -95 dBm sensitivity 2.5V operation Small 44 pin Leadless Leadframe Package
3.0 Applications (DECT) Digital Enhanced Cordless Telecommunications
4.0 System DiagramTXDATA
RX_DATA
RSSI
DATA
CLOCK
AGC
DEMOD. 90°
DEMOD.
BIAS
PLL
PADR
MICROWIRE
LNABALUN
BALUN
PORTS
R REF
