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LMX2324 Datasheet, PDF (1/12 Pages) National Semiconductor (TI) – PLLatinum™ 2.0 GHz Frequency Synthesizer for RF Personal Communications | |||
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PRELIMINARY
November 1999
LMX2324
PLLatinum⢠2.0 GHz Frequency Synthesizer for RF
Personal Communications
General Description
The LMX2324 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 LMX2324âs 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 LMX2324 via a three-line
MICROWIRE⢠interface (Data, LE, Clock). Supply voltage
range is from 2.7V to 5.5V. The LMX2324 features very low
current consumption, typically 3.5 mA at 3V. The charge
pump provides 4 mA output current.
The LMX2324 is manufactured using Nationalâs ABiC V
BiCMOS process and is packaged in a 16-pin TSSOP and a
16-pin Chip Scale Package (CSP).
Features
n RF operation up to 2.0 GHz
n 2.7V to 5.5V operation
n Low current consumption: ICC = 3.5 mA (typ) at VCC =
3.0V
n Dual modulus prescaler: 32/33
n Internal balanced, low leakage charge pump
Applications
n Cellular telephone systems (GSM, NADC, CDMA, PDC)
n Personal wireless communications (DCS-1800, DECT,
CT-1+)
n Wireless local area networks (WLANs)
n Other wireless communication systems
Functional Block Diagram
DS101030-1
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
MICROWIRE⢠and PLLatinum⢠are trademarks of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation DS101030
www.national.com
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