RFSA2113

Wide Bandwidth Voltage Controlled Attenuator

Data Sheet, September 2, 2016 | Subject to change without notice

1 of 19

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Product Features

 Patented Circuit Architecture

 Broadband 50 MHz to 18,000 MHz Frequency Range

 30 dB Attenuation Range

 +45 dBm IIP3 Typical

 +75 dBm IIP2 Typical

 High 1 dB Compression Point +29 dBm

 Low Supply Current 2 mA Typical

 +3 to +5 V Power Supply

 Linear in dB Control Characteristic

 Internal Temperature Compensation

 Class 1C HBM ESD (≥1000 V)

16 Pin, 3.2

 mm x 3.2 mm x 1.175 mm SMT Package

Applications

 Point to Point Radio

 Test Instrumentation

 Microwave Radio

 High Linearity Power Control

Product Description

The RFSA2113 is a fully monolithic analog voltage

controlled attenuator (VCA) featuring exceptional linearity

over a typical temperature compensated 30 dB gain control

range. The RFSA2113 features a wide bandwidth up to

18 GHz. This VCA incorporates a revolutionary new circuit

architecture to solve a long standing industry problem: high

IP3, high attenuation range, low DC current, broad

bandwidth and temperature compensated linear in dB

control voltage characteristic.

The RFSA2113 attenuation level is set by a single positive

control voltage with on chip DC conditioning circuitry. The

slope polarity of the control voltage versus gain is

selectable. The RFSA2113 draws a very low 2 mA current.

This attenuator is matched to 50 Ω over its rated control

range

and

frequency

with

no

external

matching

components required.

Functional Block Diagram

Typical VCA’s in this performance range are based on

compound semiconductor GaAs FET MMICs that require 1

to 2 negative voltages for control. This game changing

product incorporates the complete solution in a small

3.2 mm x 3.2 mm multi-chip laminate module that reduces

the footprint in area and simplifies the control aspects over

conventional

compound

semiconductor

attenuator

approaches.

Ordering Information

Part No.

Description

RFSA2113SQ

Sample bag with 25 pieces

RFSA2113SR

7” Reel with 100 pieces

RFSA2113TR13

13” Reel with 2500 pieces

RFSA2113PCK-410

50 MHz to 18,000 MHz PCBA with 5-piece sample bag

2

3

4

1

EN

GND

RFIN

GND

11

10

9

12

CONTROL

BLOCK

ATTEN.

GND

GND

RFOUT

GND