DC-31GHz 4Bit Digital Attenuator

CHT3029-QEG

Ref. : DSCHT3029-QEG5357 - 23 Dec 15

11/12

Specifications subject to change without notice

Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France

Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34 - www.ums-gaas.com

Evaluation mother board

■ Compatible with the proposed footprint.

■ Based on typically Ro4003 / 8mils or equivalent.

■ Using a micro-strip to coplanar transition to access the package.

■ See application note AN0017 for details.

Recommended assembly table

Label

Pad

number

Decoupling

Comment

RF IN

RF OUT

6

14

External DC block must be used

to ensure DC decoupling

Input

and

Output

RF

accesses

A1

A2

A3

A4

3

2

1

24

Not required

Bit control pads

V+

16

10nF

Positive Supply

V-

17

10nF

Negative Supply