Datasheet > RF3857

RF3857

更新时间： 2024-11-12 01:05:51

品牌	Logo	应用领域
威讯 - RFMD		电信电信集成电路
页数	文件大小	规格书
11页	624K
描述
DUAL CHANNEL LNA WITH BYPASS MODE

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RF3857 数据手册

RF3857

DUAL CHANNEL LNA WITH BYPASS MODE

Package Style: QFN, 16-Pin, 3mmx3mmx0.45mm

Features

GAIN SEL1 1

GND 2

12 GAIN SELECT2

11 GND



Low Noise and High Intercept

Point

Logic

Control Control

Logic



Adjustable Bias Current

Power Down Control

RFOUT1 3

10 RFOUT2

9 N/C

Low Insertion Loss Bypass

Feature

N/C



1.8V to 4V Operation (See

“Bias Note” on Page 3)

0.9GHz to 4.0GHz Operation

Applications



WiFi LNA with Bypass Feature

Functional Block Diagram



WiMAX LNA with Bypass Fea-

ture

Product Description

The RF3857 is a dual channel switchable low noise amplifier with a very

high dynamic range designed for digital cellular, WiMAX, and WiFi applica-

tions. The device functions as an outstanding front end low noise ampli-

fier. The bias current may be set externally. The RF3857 combines two

receive paths, which is ideal in an application that requires two receive

paths, such as 1x2 and 2x2 MIMO for both WiFi and WiMax aplications.

The IC is featured in a standard QFN, 16-pin, 3mmx3mm plastic package.



CDMA PCS LNA with Bypass

Feature

Suitable for 1x2 or 2x1

MIMO Applications

Commercial and Consumer

Systems

Optimum Technology Matching® Applied

GaAs HBT

GaAs MESFET

InGaP HBT

SiGe BiCMOS

Si BiCMOS

SiGe HBT

GaAs pHEMT

Si CMOS

Si BJT

GaN HEMT

RF MEMS

LDMOS



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.

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

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

DS110616

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