Digital Attenuator, 15.5 dB, 5-Bit

DC-2.0 GHz

AT-280

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

product(s) or information contained herein without notice. M/A-COM makes

no warranty, representation or guarantee regarding the suitability of its

products for any particular purpose, nor does M/A-COM assume any liability

whatsoever arising out of the use or application of any product(s) or

information.

• 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.macom.com for additional data sheets and product information.

V5

1

Features

• 0.5 dB Attenuation Steps to 15.5 dB

• Ultra Low DC Power Consumption

• Low Intermodulation Product: +45 dBm IP3

• SOIC-16 Plastic Package

• Tape and Reel Packaging Available

• Temperature Stability: +/-0.15 dB from -40°C to

+85°C

Description

M/A-COM’s AT-280 is a 5-bit, 0.5-dB step GaAs

MMIC digital attenuator in a low cost SOIC 16-lead

surface mount plastic package. The AT-280 is

ideally suited for use where high accuracy, fast

switching, very low power consumption and low

intermodulation products are required at a low cost.

Typical applications include radio and cellular

equipment, wireless LANS, GPS equipment and

other gain/level control circuits.

The AT-280 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

Part Number

Package

AT-280

SOIC 16–Lead

AT-280TR

Forward Tape and Reel

AT-280SMB

16

15

14

13

12

11

1

2

3

4

5

6

7

8

10

9

8 dB

4 dB

2 dB

1 dB

0.5 dB

Pin Configuration

Parameter

Absolute Maximum

Input Power:

0.05 GHz

0.5 - 2.0 GHz

+27 dBm

+34 dBm

Control Voltage

Operating Temperature

-40°C to +85°C

Storage Temperature

-65°C to +150°C

1. Reference Application Note M513 for reel size information.

2. Exceeding any one or combination of these limits may cause

Pin No.

Function

Pin No.

Function

1

VC1

9

RF2

2

VC1

10

Ground

3

VC2

11

Ground

4

VC2

12

Ground

5

VC3

13

Ground

6

VC3

14

Ground

7

VC4

15

Ground

8

VC5

16

RF1