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Optimum Technology Matching® Applied
GaAs HBT
InGaP HBT
GaAs MESFET
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
Functional Block Diagram
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
Product Description
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Ordering Information
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16
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NC
NC
NC
NC
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NC
RF OUT
RF IN
RF3861
WIDE BANDWIDTH, HIGH LINEARITY
LOW NOISE AMPLIFIER
The RF3861 is a low noise amplifier with a high output IP3. The amplifier
is self-biased from a single voltage supply with 50
Ω input and output
ports. The useful frequency range is from 700MHz to 3800MHz. A 1dB
noise figure and 36dBm OIP3 performance is achieved with a 5V VDD,
90mA. Current can be increased to raise OIP3 while having minimal effect
on noise figure. The IC is featured in a standard QFN, 16-pin, 3mmx3mm
package.
Features
Low Noise and High Intercept
Point
Adjustable Bias Current
Single 2.5V to 6.0V Power
Supply
700MHz to 3800MHz Opera-
tion
Extremely Small QFN16
3mmx3mm Package
Applications
CDMA,PCS,ECS,UMTS
LNA/Linear Driver
WLAN LNA/Linear Driver
WiMAX LNA/Linear Driver
900MHz LNA/Linear Driver
General Purpose Amplifica-
tion
RF3861
Wide Bandwidth, High Linearity Low Noise Amplifier
RF3861PCK-410
Fully Assembled Evaluation Board with 5 Sample Parts
1.5GHz to 2.7GHz
RF3861PCK-411
3.3GHz to 3.8GHz
RF3861PCK-412
700MHz to 1100MHz
Rev A0 DS070806
Package Style: QFN, 16-Pin, 3mmx3mm
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