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LMX2315TMLMN/a1217avaiFrequency Synthesizer for RF Personal Communications
LMX2315TMXNSN/a2500avaiFrequency Synthesizer for RF Personal Communications


LMX2315TMX ,Frequency Synthesizer for RF Personal CommunicationsLMX2314/LMX2315PLLatinum1.2GHzFrequencySynthesizerforRFPersonalCommunicationsMarch1995TMLMX2314/LMX ..
LMX2316TM ,1.2 GHz PLLatinum Low Power Frequency Synthesizer for RF Personal CommunicationsApplicationscan range from 2.3V to 5.5V. The LMX2306/16/26 featureultra low current consumption; LM ..
LMX2316TMX ,1.2 GHz PLLatinum Low Power Frequency Synthesizer for RF Personal CommunicationsBlock Diagram10012701®TRI-STATE is a registered trademark of National Semiconductor Corporation.Fas ..
LMX2320 ,PLLatinum 2.0 GHz Frequency Synthesizer for RF Personal CommunicationsFeaturesYRF operation up to 2.5 GHzThe LMX2315/2320/2325’s are high performance frequen-Ycy synthes ..
LMX2320 ,PLLatinum 2.0 GHz Frequency Synthesizer for RF Personal CommunicationsLMX2315/LMX2320/LMX2325PLLatinumFrequencySynthesizerforRFPersonalCommunicationsLMX23252.5GHzLMX2320 ..
LMX2320TM ,Frequency Synthesizer for RF Personal CommunicationsFeaturesYRF operation up to 2.5 GHzThe LMX2315/2320/2325’s are high performance frequen-Ycy synthes ..
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LMX2315TM-LMX2315TMX
1.2 GHz Frequency Synthesizer for RF Personal Communications
TL/W/11766
LMX2314/LMX2315
PLLatinum
GHz
Frequency
Synthesizer
for
Personal
Communications
March 1995
LMX2314/LMX2315 PLLatinumTM
1.2 GHz Frequency Synthesizer
for RF Personal Communications
General Description
The LMX2314andthe LMX2315are high performancefre-
quencysynthesizers withintegrated prescalers designedfor operationupto1.2 GHz. Theyare fabricated usingNa-
tional’s ABiCIV BiCMOS process.
The LMX2314andthe LMX2315 contain dual moduluspre-
scalers which canselect eithera 64/65ora 128/129 divide
ratioat input frequenciesofupto1.2 GHz. Usinga proprie-
tary digital phase locked loop technique,the LMX2314/15’s
linear phase detector characteristicscan generate verysta-
ble,low noise local oscillator signals.
Serial datais transferred into the LMX2314 and the
LMX2315viaa threeline MICROWIRETM interface (Data,
Enable, Clock). Supply voltagecan rangefrom 2.7V to5.5V.
The LMX2314 andthe LMX2315 feature verylow current
consumption, typically6mAat3V.
The LMX2314is availableina JEDEC 16-pin surface mount
plastic package. The LMX2315is availableina TSSOP
20-pin surface mount plastic package.
FeaturesRF operationupto1.2 GHz 2.7Vto 5.5V operation Low current consumption:
ICCe6mA (typ)at VCCe3V Dual modulus prescaler: 64/65or 128/129 Internal balanced,low leakage charge pump Power down featurefor sleep mode:
ICCe30mA (typ)at VCCe3V Small-outline, plastic, surface mount JEDEC, 0.150×
wide, (2314)or TSSOP, 0.173× wide, (2315) package
Applications Cellular telephone systems
(GSM, IS-54, IS-95, RCR-27) Portable wireless communications
(DECT, ISM902-928 CT-2) Other wireless communication systems
Block Diagram
TL/W/11766–1
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
MICROWIRETMand PLLatinumTMaretrademarksof National Semiconductor Corporation.
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
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