CHT3029-QEG

DC-31GHz 4Bit Digital Attenuator

Ref. : DSCHT3029-QEG5357 - 23 Dec 15

4/12

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

Typical Bias Conditions

Tamb.= +25°C

Symbol

Pad N

o

Parameter

Values

Unit

A1

3

Control voltage of attenuator bit 1

0 / +3.3 or +5

V

A2

2

Control voltage of attenuator bit 2

0 / +3.3 or +5

V

A3

1

Control voltage of attenuator bit 3

0 / +3.3 or +5

V

A4

24

Control voltage of attenuator bit 4

0 / +3.3 or +5

V

V+

16

Positive biasing voltage

+5

V

V-

17

Negative biasing voltage

–5

V

Attenuator control table

Voltage to apply on pads A1 to A4

State

Att

(dB)

A4

(V)

A3

(V)

A2

(V)

A1

(V)

0

0

0

0

0

0

1

1

0

0

0

3.3

2

2

0

0

3.3

0

3

3

0

0

3.3

3.3

4

4

0

3.3

0

0

5

5

0

3.3

0

3.3

6

6

0

3.3

3.3

0

7

7

0

3.3

3.3

3.3

8

8

3.3

0

0

0

9

9

3.3

0

0

3.3

10

10

3.3

0

3.3

0

11

11

3.3

0

3.3

3.3

12

12

3.3

3.3

0

0

13

13

3.3

3.3

0

3.3

14

14

3.3

3.3

3.3

0

15

15

3.3

3.3

3.3

3.3