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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. ©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.

BiFET HBT

SOI



Z e

AMP2

1

2

3

4

5

6

7

15

16

17

18

19

20

21

SPI_LE

SPI_DATA

SPI_CLK

PUP

GND

RF_IN

GND

GND

RF_OUT

GND

GND

GND

GND

GND

RFDA0056

Digital Controlled Variable Gain Amplifier 300MHz

to 1100MHz, 6-Bit 0.5dB LSB Control

RFMD's RFDA0056 is a digital controlled variable gain amplifier featuring high lin-

earity over the entire gain control range. The gain of the 6-bit digital step attenuator

is programmed with a serial mode control interface (SPI). The RFDA0056 is pack-

aged in a small 6.0mm x 6.0mm 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



Frequency Range 300MHz to

1100MHz



Full Internal Matching and No

External Bias Inductors



6-Bit Digital Step Attenuator



SPI Serial Control Programming



Gain Control Range = 31.5dB

(0.5dB Step Size)



High OIP3/P1dB = +44/25dBm

Typical at 450MHz



Single +5V Supply



Small 28-Pin, 6.0mm x 6.0mm,

MCM



Power-up Programming

Applications



Cellular, 3G Infrastructure



WiBro, WiMax, LTE



Microwave Radio



High Linearity Power Control

DS120926







Package: MCM 28-Pin, 6.0mm x 6.0mm

RFDA0056Dig-

ital Controlled

Variable Gain

Amplifier

300MHz to

1100MHz, 6-

Bit 0.5dB LSB

Control

RFDA0056SQ

Sample bag with 25 pieces

RFDA0056SR

7” Reel with 100 pieces

RFDA0056R7

7” Reel with 750 pieces

RFDA0056R13

13” Reel with 2500 pieces

RFDA0056PCK-410 300MHz to 1100MHz PCBA with 5-piece sample bag

Ordering Information