1 of 11

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

RF MEMS

LDMOS



9

10

1

2

3

4

5

6

7

8

11

12

13

14

15

16

24

23

22

21

20

19

18

17

32

31

30

29

28

27

26

25

AMPIN

GND

GND

ATTOUT

NC

NC

NC

NC

NC

NC

NC

Vdd

DSA

6-bit SPI

E-pad

GND

NC

NC

NC

NC

RFDA2025

DIGITAL CONTROLLED VARIABLE GAIN

AMPLIFIER

RFMD’s RFDA2025 is a digital controlled variable gain amplifier featuring

high linearity over the entire gain control range. The 6-bit digital step

attenuator is programmed with a serial mode control interface. The

RFDA2025 is packaged in a small 5.2mmx5.2mm leadless laminate

MCM with plated through thermal vias for ultra low thermal resistance.

The footprint for this module is directly compatible with most 32-pin

5mmx5mm QFNs. The output amplifier is externally matched, allowing for

optimum performance over specific bands within 500MHz to 2500MHz.

Features



500MHz to 2500MHz Operation



6-Bit Digital Step Attenuator



Serial Control Interface



31.5dB Attenuation Range

(0.5dB Step)



High OIP3/P1dB=+43/25dBm



Gain=-20dB to +11.5dB at

2017MHz



Single +5V Supply



Robust 1000V HBM ESD



Footprint Compatible with 32-Pin

5mmx5mm QFN

Applications



Cellular, PCS, 3G Infrastructure



WiBro, WiMax, LTE



High Linearity Power Control

DS101117



Package: MCM, 32-Pin, 5.2mmx5.2mm

RFDA2025Dig-

ital Controlled

Variable Gain

Amplifier

RFDA2025SQ

Sample bag with 25 pieces

RFDA2025SR

7” Reel with 100 pieces

RFDA2025TR7

7” Reel with 750 pieces

RFDA2025TR13

13” Reel with 2500 pieces

RFDA2025PCK-410

1800 MHz to 2200 MHz PCBA with 5-piece sample bag