Custom MMIC

300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294

Visit us online at www.custommmic.com

The CMD282 is negative controlled, wideband

GaAs MMIC 2-bit digital attenuator die which

operates from DC to 40 GHz. Each bit of the

attenuator is controlled by a single voltage of

either 0 V or –5 V. The attenuator bit values

are 4 dB and 8 dB, for a total attenuation of 12

dB. The CMD282 has a low insertion loss of

1.5 dB at 18 GHz and the attenuation accuracy

is typically 0.1 dB step error. The CMD282 is a

50 ohm matched design which eliminates the

need for RF port matching. The CMD282

offers full passivation for increased reliability

and moisture protection.

► Ultra wideband performance

► Low insertion loss

► Wide attenuation range

► Small die size

Features

Description

Functional Block Diagram

ver 1.0 0518

Parameter

Min

Typ

Max

Units

Frequency Range

DC – 40

GHz

Insertion Loss

1.5

dB

Attenuation Range

12

dB

Input Return Loss

18

dB

Output Return Loss

18

dB

Input IP3

42

dBm

Input P0.1dB

23

dBm

Switching Speed

25

ns

CMD282

DC-40 GHz 2-bit Digital Attenuator