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RF3865

WIDE BANDWIDTH, HIGH LINEARITY

LOW NOISE AMPLIFIER/LINEAR DRIVER

Package Style: QFN, 20-Pin, 5mmx5mm

VD1

VD2

17

NC

NC

20

19

18

16

15 NC

14 NC

13 RF OUT

12 NC

11 AC GND2

Features

Low Noise and High Intercept

Point

Adjustable Bias Current

Single 2.5V to 6.0V Power

Supply

700MHz to 3800MHz Opera-

tion

QFN20, 5mmx5mm Package

NC 1

NC 2

RF IN 3

NC 4

AC GND1 5

6

NC

7

INTERSTAGE

OUT

8

NC

9

INTERSTAGE

IN

10

NC

Applications

WiMAX LNA or Linear Driver

CDMA, PCS, ECS, UMTS LNA

WLAN LNA

High Gain Linear Amplifica-

tion

Functional Block Diagram

Product Description

The RF3865 is a low noise amplifier with a high output IP3. The amplifier

is self-biased from a single voltage supply with 50惟 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 V

DD

,

180mA. Current can be increased to raise OIP3 while having minimal

effect on noise figure. The IC is featured in a standard QFN, 20-pin,

5mmx5mm package.

Ordering Information

RF3865

RF3865PCK-410

RF3865PCK-411

Wide Bandwidth, High Linearity Low Noise Amplifier/Linear

Driver

Fully Assembled Evaluation Board with 5 Sample Parts

1.8GHz to 3.8GHz

700MHz to 1100MHz

Optimum Technology Matching廬 Applied

GaAs HBT

GaAs MESFET

InGaP HBT

SiGe BiCMOS

Si BiCMOS

SiGe HBT

GaAs pHEMT

Si CMOS

Si BJT

GaN HEMT

RF MICRO DEVICES廬, RFMD廬, Optimum Technology Matching廬, Enabling Wireless Connectivity鈩? PowerStar廬, POLARIS鈩?TOTAL RADIO鈩?and UltimateBlue鈩?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. 漏2006, RF Micro Devices, Inc.

Rev A0 DS070622

7628 Thorndike Road, Greensboro, NC 27409-9421 路 For sales or technical

support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.

NC

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