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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

Digital Attenuator

15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz

Rev. V7

AT-283-PIN

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: 0.5 dB Steps to 15.5 dB

• Temperature Stability: ± 0.18 dB from –55°C

to +85°C Typical

• Low DC Power Consumption

• Hermetic Surface Mount Package

• Integral TTL Driver

• 50 Ω Nominal Impedance

• Lead-Free CR-12 Package

• 260°C Reflow Compatible

• RoHS* Compliant

Description

M/A-COM’s AT-283-PIN is a GaAs FET 5-bit digital

attenuator with a 0.5 dB minimum step size and 15.5

dB total attenuation. This attenuator and integral

TTL driver is in a hermetically sealed ceramic 16

lead surface mount package. The AT-283-PIN is

ideally suited for use where accuracy, fast switching,

very low power consumption and low intermodula-

tion products are required. Typical applications in-

clude dynamic range setting in precision receiver

circuits and other gain/leveling control circuits. Envi-

ronmental screening is available. Contact the fac-

tory for information.

Ordering Information

Part Number

Package

AT-283-PIN

Bulk Packaging

MAAD-007229-0001TR

1000 piece reel

MAAD-007229-0001TB

Sample Test Board

Note: Reference Application Note M513 for reel size

information.

Functional Schematic

Pin Configuration

Pin No.

Function

Pin No.

Function

1

RF1

9

C5

2

GND

10

+5V

3

GND

11

-5V

4

GND

12

C4

5

GND

13

C3

6

GND

14

C2

7

GND

15

C1

8

RF2

16

GND

* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.

The metal bottom of the case must be connected to RF and DC

ground.