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LMX2216M
0.1 GHz to 2.0 GHz Low Noise Amplifier/Mixer for RF Personal Communications
TL/W/11814
LMX2216
GHz
GHz
Low
Noise
Amplifier/Mixer
for
Personal
Communications
August 1995
LMX2216
0.1 GHz to 2.0 GHz Low Noise Amplifier/Mixer
for RF Personal Communications
General Description
The LMX2216isa monolithic, integratedlow noise amplifier
(LNA) andmixer suitableasafirst stage amplifier anddown-
converterforRF receiver applications. The wideband oper-
ating capabilitiesofthe LMX2216 allowitto function over
frequencies from0.1 GHzto2.0 GHz.Itis fabricated using
National Semiconductor’s ABiCIV BiCMOS process.
All inputand output portsofthe LMX2216are single-ended.
The LNA inputand output portsare designedto interfaceto
a50X system.The Mixer input portsare matchedto 50X.
The outputport ismatchedto 200X.The only external com-
ponents requiredareDC blocking capacitors.The balanced
architectureofthe LMX2216 maintains consistent operating
parameters fromunitto unit, sinceitis implementedina
monolithic device. This consistency provides manufacturers significant advantage since tuning proceduresÐoften
neededwith discrete designsÐcanbe reducedor eliminat-
ed.
Thelow noise amplifier produces veryflat gain overtheen-
tire operating range.The doubly-balanced, Gilbert-cell mixer
provides good LO-RF isolationand cancellationof second-
order distortion products.A power down featureis imple-
mentedonthe LMX2216thatis especially usefulfor stand- operation commonin Time Division Multiple Access
(TDMA)and Time Division Duplex (TDD) systems.
The LMX2216is availableina narrow-body 16-pin surface
mount plastic package.
Features WidebandRF operation from0.1 GHzto2.0 GHzNo external biasing components necessary3V operation LNA inputand output ports matchedto 50X Mixer input ports matchedto 50X, output port matched 200X. Doubly balanced Gilbertcell mixer (single ended input
and output) Low power consumption Power down feature Small outline, plastic surface mount package
Applications Digital European Cordless Telecommunications (DECT) Portable wireless communications (PCS/PCN, cordless) Wireless local area networks (WLANs) Digital cellular telephone systems Other wireless communications systems
Functional Block/Pin Diagram
TL/W/11814–1
Order Number LMX2216M
SeeNS Package Number M16A
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
