CMD282
CMD282 is DC-40 GHz 2-bit Digital Attenuator manufactured by Custom MMIC.
Features
- Ultra wideband performance
- Low insertion loss
- Wide attenuation range
- Small die size
Description
The CMD282 is negative controlled, wideband Ga As 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 d B and 8 d B, for a total attenuation of 12 d B. The CMD282 has a low insertion loss of 1.5 d B at 18 GHz and the attenuation accuracy is typically 0.1 d B 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 o C, F = 18 GHz
Parameter
Min Typ Max
Frequency Range
- 40
Insertion Loss
Attenuation Range
Input Return Loss
Output Return Loss
Input P0.1d...
