參數(shù)資料
型號(hào): LMX2323
廠商: National Semiconductor Corporation
英文描述: PLLatinum? 2.0 GHz Frequency Synthesizer for RF Personal Communications
中文描述: PLLatinum? 2.0千兆赫頻率合成射頻個(gè)人通信
文件頁數(shù): 1/12頁
文件大?。?/td> 185K
代理商: LMX2323
LMX2323
PLLatinum
2.0 GHz Frequency Synthesizer for RF
Personal Communications
General Description
The LMX2323 is a high performance frequency synthesizer
with integrated 32/33 dual modulus prescaler designed for
RF operation up to 2.0 GHz. Using a proprietary digital
phase locked loop technique, the LMX2323’s linear phase
detector characteristics can generate very stable, low noise
control signals for UHF and VHF voltage controlled oscilla-
tors.
Serial data is transferred into the LMX2323 via a three-line
MICROWIRE
interface (Data, LE, Clock). Supply voltage
range is from 2.7V to 5.5V. The LMX2323 features very low
curent consumption, typically 3.5mAat 3V. The charge pump
provides 4 mA output current.
The LMX2323 is manufactured using National’s ABiC V
BiCMOS process and is packaged in a 16-pin TSSOP.
Features
n
RF operation up to 2.0 GHz
n
2.7V to 5.5V operation
n
Low current consumption: Icc = 3.5mA (typ) at
Vcc=3.0V
n
Digital Lock Detect
n
Dual modulus prescaler: 32/33
n
Internal balanced, low leakage charge pump
Applications
n
Cellular telephone systems (GSM, NADC, CDMA, PDC,
PHS)
n
Personal wireless communications (DCS-1800, DECT,
CT-1+)
n
Wireless local area networks (WLANs)
n
DCS/PCS infrastructure equipment
n
Other wireless communication systems
Functional Block Diagram
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
MICROWIRE
and PLLatinum
are trademarks of National Semiconductor Corporation.
DS101362-1
October 2000
L
2000 National Semiconductor Corporation
DS101362
www.national.com
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