• North America Tel: 800.366.2266 / Fax: 978.366.2266

• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300

• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298

Visit www.macomtech.com for additional data sheets and product information.

M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make

changes to the product(s) or information contained herein without notice.

1

Voltage Variable Absorptive Attenuator

12 dB, DC - 2.0 GHz

Rev. V5

AT-259

ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions

is considering for development. Performance is based on target specifications, simulated results,

and/or prototype measurements. Commitment to develop is not guaranteed.

PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology

Solutions has under development. Performance is based on engineering tests. Specifications are

typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.

Commitment to produce in volume is not guaranteed.

Features

• Attenuation: 12 dB at 1 GHz

• Low Intermodulation Products

• Low DC Power Consumption: 50 μW

• Single Voltage Control: 0 to -4 Volts

• Nanosecond Switching Speed

• Temperature Range: -40°C to +85°C

• SOT-143 Plastic Package

• Tape and Reel Packaging Available

Description

M/A-COM’s AT-259 is a GaAs MMIC voltage

variable absorptive attenuator in a low cost SOT-143

4-Lead surface mount plastic package. The AT-259

is ideally suited for use where attenuation fine

tuning,

fast

switching

and

very

low

power

consumption are required.

Typical applications include radio, cellular, GPS

equipment and other automatic gain/level control

circuits.

The AT-259 is fabricated with a monolithic GaAs

MMIC using a mature 1 micron process. The

process features full chip passivation for increased

performance and reliability.

Functional Schematic

Pin Configuration

Pin No.

Function

Pin No.

Function

1

Ground

3

RF2

2

4

RF1

Absolute Maximum Ratings

3

Parameter

Absolute Maximum

Input Power

+21 dBm

Control Voltage

+5V, -8.5V

Operating Temperature

-40°C to +85°C

Storage Temperature

-65°C to +150°C

Part Number

Package

AT-259

Bulk Packaging

AT-259TR

Forward Tape and Reel

AT-259SMB

Sample Board

3. Exceeding any one or combination of these limits may

Ordering Information

1,2

1. Reference Application Note M513 for reel size information.

2. All sample boards include 5 loose parts.

†

Reference Application Note M538 for lead-free solder reflow recommendations.

Meets JEDEC moisture sensitivity level 1 requirements.