1 of 10

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



2

3

4

5

6

1

17

18

19

20

21

22

9

10

11

12

13

14

32

31

30

29

28

27

SPI Controller

GND

RFOUT1

RFIN1

GND

GND

ATTOUT

N/C

7

8

15

16

23

24

26

25

GND

ATTIN

GND

ACG1

ACG7

GND

RFIN2

RFOUT2

GND

NC

6-BIT DSA

EPAD

GND

RFDA0045

DIGITAL CONTROLLED VARIABLE GAIN

AMPLIFIER 10MHZ TO 850MHZ

RFMD's RFDA0045 is a digital controlled variable gain amplifier (DVGA) featuring

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

programmed with serial mode control interface. The RFDA0045 is packaged in a

5.2mmx5.2mm leadless laminate MCM with plated through thermal vias for low

thermal resistance. The amplifiers’ bias chokes and DC blocks are external allowing

for optimum performance over specific bands within 10MHz to 850MHz.

Features



Frequency Range 10MHz to

850 MHz



6-Bit Digital Step Attenuator



SPI Serial Control Program-

ming



Max Gain = 44dB at 150MHz



Gain Control Range = 31.5dB

(0.5dB Step Size)



High OIP3 = 42dBm at

150MHz



High P1dB = 20dBm at

150MHz



Single +5V Supply



Small 32-Pin, 5.2mm x

5.2mm, MCM



Footprint Compatible with

5mm x 5mm, 32-Pin, QFN



Power-up Programming

Applications



Transceiver IF DVA



Cellular, PCS, GSM, UMTS



Wireless Data, Satellite

Terminals

DS110621





Package: MCM 32-Pin, 5.2mm x 5.2mm

RFDA0045Dig-

ital Controlled

Variable Gain

Amplifier

RFDA0045SQ

Sample Bag with 25 pieces

RFDA0045SR

7” Sample Reel with 100 pieces

RFDA0045T7

7” Reel with 750 pieces

RFDA0045TR13

13” Reel with 2500 Pieces

RFDA0045PCK-410

10MHz to 850MHz PCBA with 5-piece sample bag