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| 型號： | LMX4168FLQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Radio Transceiver for DECT |
| 中文描述： | TELECOM, CORDLESS, RF AND BASEBAND CIRCUIT, QCC44 |
| 封裝： | LLP-44 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 41K |
| 代理商： | LMX4168FLQ |
L
2004 National Semiconductor Corporation
www.national.com
ADVANCED INFORMATION
March 2004
LMX4168
Radio Transceiver for DECT
1.0 General description
The 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 0.25
μ
m
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 Diagram
TXDATA
RX_DATA
RSSI
DATA
CLOCK
LE
AGC
DEMOD.
0°
90°
PA
BIAS
X2
PLL
PADR
MICROWIRE
LNA
BALUN
BALUN
PORTS
R REF
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