LMX2325TMX ,Frequency Synthesizer for RF Personal CommunicationsLMX2315/LMX2320/LMX2325PLLatinumFrequencySynthesizerforRFPersonalCommunicationsLMX23252.5GHzLMX2320 ..
LMX2325TMX ,Frequency Synthesizer for RF Personal CommunicationsLMX2315/LMX2320/LMX2325PLLatinumFrequencySynthesizerforRFPersonalCommunicationsLMX23252.5GHzLMX2320 ..
LMX2325TMX ,Frequency Synthesizer for RF Personal CommunicationsLMX2315/LMX2320/LMX2325PLLatinumFrequencySynthesizerforRFPersonalCommunicationsLMX23252.5GHzLMX2320 ..
LMX2326 ,3.0 GHz PLLatinum Low Power Frequency Synthesizer for RF personal CommunicationsFeaturesLMX2316 1.2 GHzY2.3V to 5.5V operationLMX2306 550 MHz YUltra low current consumptionY2.5V V ..
LMX2326TMX ,2.8 GHz PLLatinum Low Power Frequency Synthesizer for RF Personal CommunicationsElectrical Characteristics. The guaranteed specifications applyonly for the test conditions listed. ..
LMX2330 ,PLLatinum Dual Frequency Synthesizer for RF Personal CommunicationsPin DescriptionPin PinI/O DescriptionNo. Name1V 1 — Power supply voltage input for RF analog and RF ..
LR G6SP , Advanced Power TOPLED Enhanced ThinFilm LED Lead (Pb) Free Product - RoHS Compliant
LR2010 , Low Value Flat Chip Resistor
LR324D , Internally Frequency Compensated Large Voltage Gain
LR38266 , Digital Signal Processor for Color CCD Cameras
LR38269 , Digital Signal Processor for Color CCD Cameras
LR38574 , Timing Generator IC for 1 090 k/1 310 k-pixel CCDs
LMX2320TM-LMX2320TMX-LMX2325TM-LMX2325TMX
Frequency Synthesizer for RF Personal Communications
TL/W/12339
LMX2315/LMX2320/LMX2325
PLLatinum
Frequency
Synthesizer
for
Personal
Communications
LMX2325
GHz
LMX2320
GHz
LMX2315
GHz
September 1996
LMX2315/LMX2320/LMX2325 PLLatinumTM
Frequency Synthesizer
for RF Personal Communications
LMX2325 2.5 GHz
LMX2320 2.0 GHz
LMX2315 1.2 GHz
General Description
The LMX2315/2320/2325’sare high performance frequen- synthesizers with integrated prescalers designedforRF
operationupto2.5 GHz. Theyare fabricated using Nation-
al’s ABiCIV BiCMOS process. 64/65ora 128/129 divide ratiocanbe selectedforthe
LMX2315and LMX2320RF synthesizer atinput frequencies upto1.2 GHzand2.0 GHz,while 32/33 and64/65 divide
ratiosare availablein the2.5 GHz LMX2325. Usinga propri-
etary digital phase locked loop technique,the LMX2315/
2320/2325’s linear phase detector characteristicscan gen-
erate very stable,low noise signalsfor controllinga local
oscillator.
Serial datais transferred into the LMX2320 and the
LMX2325viaa threeline MICROWIRETM interface (Data,
Enable, Clock). Supply voltagecan rangefrom 2.7V to5.5V.
The LMX2315, LMX2320and theLMX2325 feature verylow
current consumption, typically6mA,10mAand11mAre-
spectively.
The LMX2315, LMX2320andthe LMX2325are availablein TSSOP 20-pin surface mount plastic package.
FeaturesRF operationupto2.5 GHz 2.7Vto 5.5V operation Low current consumption Dual modulus prescaler:
LMX2325 32/33or 64/65
LMX2320/LMX2315 64/65or 128/129 Internal balanced,low leakage charge pump Power down featurefor sleep mode:
ICCe30mA (typ)at VCCe3V Small-outline, plastic, surface mount TSSOP, 0.173×
wide
Applications Cellular telephone systems
(GSM, IS-54, IS-95, (RCR-27) Portable wireless communications (DECT, PHS) CATV Other wireless communication systems
Block Diagram
TL/W/12339–1
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
MICROWIRETMand PLLatinumTMaretrademarksof National Semiconductor Corporation.
C1996National SemiconductorCorporation RRD-B30M106/Printed inU.S.A. http://
