RF Micro Devices Inc.

7628 Thorndike Road, Greensboro, NC 27409-9421

DS141203

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.

1 of 20

RFSA3714

50MHz to 6000MHz, Digital Step Attenuator

The

RFMD’s RFSA3714 is a 7-bit digital step attenuator

(DSA) that features high linearity over the entire 31.75dB gain

control range with 0.25dB steps. The RFSA3714 features

three modes of control: serial, latched parallel, and direct

parallel programming. The RFSA3714 has a low insertion loss

of 1.5dB at 2GHz. Patent pending circuit architecture provides

Overshoot-free transient switching performance. The

RFSA3714 is available in a 4mm x 4mm QFN package.

24

1

2

3

4

5

6

23

22

21

20

19

18

17

16

15

14

13

7

8

9

10

11

12

7-BIT DSA

LOGIC CONTROL

C0.25

VDD

PBAR/S

GND

RFIN

GND

SI

CLK

LE

GND

RFOUT

GND

Functional Block Diagram

Ordering Information

RFSA3714SQ

Sample bag with 25 pieces

RFSA3714SR

7" Reel with 100 pieces

RFSA3714TR13

13" Reel with 2500 pieces

RFSA3714PCK-410

50MHz to 6000MHz PCBA with 5-piece sample bag

Package: QFN, 24-pin,

4.0mm x 4.0mm x 0.85mm

Features

■

7-Bit, 31.75dB Range, 0.25dB Step

■

Patent Pending Circuit Architecture

■

Overshoot-free Transient

Switching Performance

■

Frequency Range 50MHz to

6000MHz

■

High Linearity, IIP3 >55dBm

■

Serial and Parallel Control

Interface

■

Fast Switching Speed, <120nsec

■

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

■

WiFi

■

Test Equipment

RFSA3714