RF Micro Devices Inc.

7628 Thorndike Road, Greensboro, NC 27409-9421

DS150128

For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.

RF MICRO DEVICES

trademarks, and registered trademarks are the property of their respective owners. ©2013, RF Micro Devices, Inc.

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RFSA3623

RFSA3623

5MHz to 6000MHz, Digital Step Attenuator

The

RFMD’s RFSA3623 is a 6-bit digital step attenuator

(DSA) that features high linearity over the entire 15.75dB gain

control range with 0.25dB steps. The RFSA3623 uses serial

control interface. The RFSA3623 has a low insertion loss of

1.4dB at 2GHz. Patent pending circuit architecture provides

overshoot-free transient switching performance. External

address pins allow up to eight DSAs to be controlled on a

single bus. The RFSA3623 is available in a 3mm x 3mm QFN

package.

16

1

2

3

4

15

14

13

12

11

10

9

5

6

7

8

6-BIT DSA

LOGIC CONTROL

VDD

A0

GND

RFIN

LE

GND

GND

RFOUT

Functional Block Diagram

Ordering Information

RFSA3623SQ

Sample bag with 25 pieces

RFSA3623SR

7" Reel with 100 pieces

RFSA3623TR7

7" Reel with 2500 pieces

RFSA3623PCK-410

5MHz to 6000MHz PCBA with 5-piece sample bag

Package: QFN, 16-pin,

3.0mm x 3.0mm x 0.85mm

Features

■

6-Bit, 15.75dB Range, 0.25dB Step

■

Patent Pending Circuit Architecture

■

Overshoot-free Transient

Switching Performance

■

Frequency Range 5MHz to

6000MHz

■

High Linearity, IIP3 >55dBm

■

Serial Control Interface

■

Fast Switching Speed, <120nsec

Typical

■

Serial Addressable Supports Up to

Eight Addresses

■

Single Supply 3V to 5V Operation

■

RF Pins Have No DC Voltage, Can

be DC Grounded Externally

■

Power-up Default Setting Is

Maximum Attenuation

Applications

■

2G through 4G Base Stations

■

Point-to-Point

■

WiMax/WiFi

■

Test Equipment

RFSA3623