Positive Voltage Control of

GaAs MMIC Control Devices

Rev. V3

Application Note

M521

• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400

• India Tel: +91.80.4155721

• China Tel: +86.21.2407.1588

3

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.

The AT-250 is a VVA that can, similarly, be floated

for positive bias operation as shown in Figure 3.

AT-250

8765

4

3

2

1

Values:

C1-C4: 1000pF

R1-R2: 10 kΩ

A

C3

C1

RF1

R1

+5V

C2

RF2

C4

R2

+5V

Figure 3.

Positive Voltage Control Configuration

of the AT-250