LMX2301 Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – PLLatinumTM 160 MHz Frequency Synthesizer for RF Personal Communications

PRELIMINARY
November 1996
LMX2301
PLLatinum^TM 160 MHz Frequency Synthesizer
for RF Personal Communications
General Description
The LMX2301 is a high performance frequency synthesizer
designed for RF operation up to 160 MHz It is fabricated
using National’s ABiC IV BiCMOS process
LMX2301 which employs the digital phase lock loop tech-
nique combined with a high quality reference oscillator and
a loop filter provides the tuning voltage for the voltage con-
trolled oscillator to generate a very stable low noise local
oscillator signal
Serial data is transferred into the LMX2301 via a three line
MICROWIRE^TM interface (Data Enable Clock) Supply volt-
age can range from 2 7V to 5 5V
The LMX2301 features very low current consumption typi-
cally 2 mA at 3V
The LMX2301 is available in a TSSOP 20-pin surface mount
plastic package
Features
Y _{RF operation up to 160 MHz}
Y _{2 7V to 5 5V operation}
Y _{Low current consumption}
I_CC e 2 mA (typ) at V_CC e 3V
Y _{Internal balanced low leakage charge pump}
Y _{Small-outline plastic surface mount TSSOP}
0 173 wide package
Applications
Y _{Analog Cellular telephone systems}
(AMPS ETACS NMT)
Y _{Portable wireless communications}
(PCS PCN cordless)
Y _{Other wireless communication systems}
Block Diagram
TL W 12458 – 1
TRI-STATE is a registered trademark of National Semiconductor Corporation
MICROWIRETM and PLLatinumTM are trademarks of National Semiconductor Corporation
C1996 National Semiconductor Corporation TL W 12458
RRD-B30M126 Printed in U S A
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