• 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.

2

Digital Attenuator, 15.5 dB, 5-Bit

DC - 2.0 GHz

Rev. V5

AT-280

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.

SOIC-16

Parameter

Test Conditions

Units

Min

Typ

Max

Reference Insertion Loss

DC—0.1 GHz

DC—0.5 GHz

DC—1.0 GHz

DC—2.0 GHz

dB

dB

dB

dB

—

—

—

—

1.1

1.3

1.5

1.8

1.3

1.5

1.8

2.0

Attenuation Accuracy

3

DC—1.0 GHz

DC—2.0 GHz

± (0.20 dB +3% of Attenuation Setting in dB) dB

± (0.30 dB +3% of Attenuation Setting in dB) dB

VSWR

(Any state)

Ratio

1.5:1

1.8:1

—

Trise, Tfall

10% to 90% RF, 90% to 10% RF

nS

—

12

—

Ton, Toff

50% Control to 90% RF, 50% Control to 10% RF

nS

—

18

—

Transients

In Band

mV

—

30

—

1 dB Compression

Input Power, 0.05 GHz

Input Power, 0.5 - 2.0 GHz

dBm

dBm

—

—

22

27

—

—

0.05 GHz

0.5 - 2.0 GHz

Measured Relative to Input Power

(for two-tone input power up to +5 dBm)

dBm

dBm

—

—

53

68

—

—

0.05 GHz

0.5 - 2.0 GHz

Measured Relative to Input Power

(for two-tone input power up to +5 dBm)

dBm

dBm

—

—

40

45

—

—

3. Attenuation acccuracy specifications apply with negative bias control and low inductance grounding.

Truth Table

4,5

4. 0 = Vin Low = 0 V = 0 to –0.2 V @ 20 µA maximum

5. 1 = Vin High = -5 V at 20 µA to -8 V at 20 µA maximum

VC

5

VC

4

VC

3

VC

3

VC

2

VC

2

VC

1

VC

1

Atten.

(dB)

1

1

1

0

1

0

1

0

Refer-

ence

0

1

1

0

1

0

1

0

0.5 dB

1

0

1

0

1

0

1

0

1 dB

1

1

0

1

1

0

1

0

2 dB

1

1

1

0

0

1

1

0

4 dB

1

1

1

0

1

0

0

1

8 dB

0

0

0

1

0

1

0

1

15.5 dB

Control Inputs