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LMX2315 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LMX2315
Description  Frequency Synthesizer for RF Personal Communications
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LMX2315 Datasheet(HTML) 1 Page - National Semiconductor (TI)

 
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TLW12339
September 1996
LMX2315LMX2320LMX2325 PLLatinum
TM
Frequency Synthesizer
for RF Personal Communications
LMX2325 25 GHz
LMX2320 20 GHz
LMX2315 12 GHz
General Description
The LMX231523202325’s are high performance frequen-
cy synthesizers with integrated prescalers designed for RF
operation up to 25 GHz They are fabricated using Nation-
al’s ABiC IV BiCMOS process
A 6465 or a 128129 divide ratio can be selected for the
LMX2315 and LMX2320 RF synthesizer at input frequencies
of up to 12 GHz and 20 GHz while 3233 and 6465 divide
ratios are available in the 25 GHz LMX2325 Using a propri-
etary digital phase locked loop technique the LMX2315
23202325’s linear phase detector characteristics can gen-
erate very stable low noise signals for controlling a local
oscillator
Serial data is transferred into the LMX2320 and the
LMX2325 via a three line MICROWIRETM interface (Data
Enable Clock) Supply voltage can range from 27V to 55V
The LMX2315 LMX2320 and the LMX2325 feature very low
current consumption typically 6 mA 10 mA and 11 mA re-
spectively
The LMX2315 LMX2320 and the LMX2325 are available in
a TSSOP 20-pin surface mount plastic package
Features
Y
RF operation up to 25 GHz
Y
27V to 55V operation
Y
Low current consumption
Y
Dual modulus prescaler
LMX2325
3233 or 6465
LMX2320LMX2315
6465 or 128129
Y
Internal balanced low leakage charge pump
Y
Power down feature for sleep mode
ICC e 30 mA (typ) at VCC e 3V
Y
Small-outline
plastic
surface mount TSSOP
0173
wide
Applications
Y
Cellular telephone systems
(GSM IS-54 IS-95 (RCR-27)
Y
Portable wireless communications (DECT PHS)
Y
CATV
Y
Other wireless communication systems
Block Diagram
TLW12339 – 1
TRI-STATE
is a registered trademark of National Semiconductor Corporation
MICROWIRETM and PLLatinumTM are trademarks of National Semiconductor Corporation
C1996 National Semiconductor Corporation
RRD-B30M106Printed in U S A
http
www nationalcom


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