RFDA2125

rfmd.com

Digital Controlled Variable Gain Amplifier

400MHz to 2700MHz, 6-Bit 0.5dB LSB Control

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

RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark

owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademark s are the property of their respective owners. ©2006, RF Micro Devices, Inc.

DS130326

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

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

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Features

Frequency Range 400MHz to

2700MHz

6-Bit Digital Step Attenuator

SPI Serial Control Programming

Max Gain = 29.5dB Typical at

2140MHz

Gain Control Range = 31.5dB

(0.5dB Step Size)

OIP3/P1dB = +44/25dBm Typical

at 2140MHz

Single +5V Supply

Small 32-Pin, 5.2mm x 5.2mm,

MCM

Power-up Programming

Applications

Cellular, 3G Infrastructure

WiBro, WiMax, LTE

Microwave Radio

High Linearity Power Control

1

2

3

4

5

6

7

23

24

17

18

19

20

21

SPI_CLK

SPI_PUP

GND

Vamp1

GND

GND

RF_IN

GND

GND

GND

GND

GND

Amp2_IN

GND

DSA

8

22

GND

GND

AMP2

Functional Block Diagram

Product Description

RFMD’s RFDA2125 is a digital controlled variable gain amplifier for

broadband applications with external matching to allow for

configurations in different bands with a single module. It features

exceptional linearity with noise figure less than 5.0dB in its maximum

gain state. The gain of the 6-bit digital step attenuator is programmed

with a serial mode control interface (SPI). The RFDA2125 is packaged in

a small 5.2mm x 5.2mm leadless laminate MCM, which contains plated

through thermal vias for ultra-low thermal resistance.

Ordering Information

RFDA2125SR

7” Sample reel with 100 pieces

RFDA2125SQ

Sample bag with 25 pieces

RFDA2125TR13

13” Reel with 2500 pieces

RFDA2125PCK-410

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