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GaAs HBT

InGaP HBT

GaAs MESFET

SiGe BiCMOS

Si BiCMOS

SiGe HBT

GaAs pHEMT

Si CMOS

Si BJT

GaN HEMT

Functional Block Diagram

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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. ©2012, 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 customerservice@rfmd.com.

Ordering Information

BiFET HBT

SOI



RFDA0057

DIGITAL CONTROLLED VARIABLE GAIN

AMPLIFIER 400MHz TO 2700MHz

RFMD’s RFDA0057 is a dual-channel, digital controlled variable gain amplifier fea-

turing high linearity over the entire gain control range with noise figure less than

7dB in its maximum gain state. The gains of two 6-bit digital step attenuators are

programmed with a serial mode control interface (SPI). The RFDA0057 is packaged

in a small 7.0mm x 7.0mm leadless laminate MCM, which contains plated through

thermal vias for ultra-low thermal resistance. This module is easy to use with no

external matching components required.

Features



Dual Channel VGA



Frequency Range 400MHz to

2700MHz



Full Internal Matching and No

External Bias Inductors



Two 6-Bit Digital Step Attenu-

ators



12-Bit SPI Serial Control

Programming



High Channel Isolation =

50dBc



Max Gain = 18.5dB at

900MHz



Gain Control Range = 31.5dB

(0.5dB Step Size)



High OIP3/P1dB =

+37dBm/19dBm at 900MHz



Single + 5V Supply



Small 32-Pin, 7.0mm x

7.0mm, MCM



Power-up Programming

Applications



Cellular, 3G Infrastructure



WiBro, WiMAX, LTE



Microwave Radio



High Linearity Power Control

DS140513





Package: MCM 32-Pin, 7.0mm x 7.0mm

RFDA0057Dig-

ital Controlled

Variable Gain

RFDA0057SR

7” Sample reel with 100 pieces

RFDA0057SQ

Sample bag with 25 pieces

RFDA0057TR7

7” Reel with 750 pieces

RFDA0057TR13

13” Reel with 2500 pieces

RFDA0057PCK-410 400MHz to 2700MHz PCBA with 5-piece sample bag