DC-40 GHz 2-bit Digital Attenuator
CMD282
DC-40 GHz 2-bit Digital Attenuator
Features
► Ultra wideband performance ► Low insertion loss ► Wide attenuation...
Description
CMD282
DC-40 GHz 2-bit Digital Attenuator
Features
► Ultra wideband performance ► Low insertion loss ► Wide attenuation range ► Small die size
Description
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.
Functional Block Diagram
Electrical Performance – Vee = -5 V, Vctl = 0 / -5 V, TA = 25 oC, F = 18 GHz
Parameter
Min Typ Max
Frequency Range
DC – 40
Insertion Loss
1.5
Attenuation Range
12
Input Return Loss
18
Output Return Loss
18
Input P0.1dB
2...
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