Datasheet > LMX4168

LMX4168

更新时间： 2024-09-15 22:46:59

品牌	Logo	应用领域
美国国家半导体 - NSC		无线
页数	文件大小	规格书
4页	43K
描述
Radio Transceiver for DECT

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LMX4168 数据手册

ADVANCED INFORMATION

March 2004

LMX4168

Radio Transceiver for DECT

1.0 General description

2.0 Features

The LMX4168 is a radio transceiver integrated circuit opti- ■ Highly integrated 1.9 GHz low-IF CMOS transceiver

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

■ 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

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

■ 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 Diagram

AGC

RX_DATA

RSSI

DEMOD.

BALUN

LNA

90°

0°

DATA

CLOCK

MICROWIRE

PADR

BIAS

PORTS

PLL

TXDATA

R REF

www.national.com

12 3 4

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