RFSA4013

Temperature Compensating Attenuator

Datasheet Rev F, January 25, 2024 | Subject to change without notice

1 of 17

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®

16-Pin

mm x 3 mm leadless QFN Package

Applications

• Cellular Wireless Infrastructure

• WiBro, WiMax, LTE

• Microwave Radio

• High Linearity Level Control

Product Overview

The RFSA4013 is a monolithic analog temperature

compensating attenuator (TCA) featuring exceptional

linearity. It is designed to offset the gain reduction of an

RF component over temperature without the need for

closed loop feedback. Three customer selectable

temperature coefficients provide a flexible solution for RF

lineups. The RFSA4013 incorporates revolutionary new

circuit architecture to solve a long-standing industry

problem with regards to attenuator architecture: high IP3,

low DC current and broad bandwidth. Traditional

approaches require expensive co-fired ceramics with

temperature sensitive materials or current hungry PIN

diodes with elaborate area consuming control circuits.

This temperature compensating attenuator requires only a

single supply voltage and two logic bits to set the slope of

attenuation versus temperature.

The RFSA4013 draws about 1mA current. This attenuator

is internally matched to 50

Ω over frequency and working

modes with no external matching required.

The RFSA4013 is packaged in a RoHS-compliant, compact

3

 mm x 3 mm QFN package.

Key Features

• Patented Circuit Architecture

• 50 – 6000 MHz Frequency Range

• 3 Selectable Slopes of Attenuation vs. Temperature

• +55 dBm IIP3 Typical

• +85 dBm IIP2 Typical

• High P1dB, > +30 dBm

• Low Current Consumption, 1 mA Typical

• Single 5 Volt DC Supply

Functional Block Diagram

Top View

Ordering Information

Part No.

Description

RFSA4013TR7

2500 pcs on 7

” reel (standard)

RFSA4013PCK-410

50 MHz-6.0 GHz Evaluation Kit