CMD280
CMD280 is DC-30 GHz 5-bit Digital Attenuator manufactured by Custom MMIC.
Features
- Ultra wideband performance
- Low insertion loss
- Wide attenuation range
- Small die size
Description
The CMD280 is negative controlled, wideband Ga As MMIC 5-bit digital attenuator die which operates from DC to 30 GHz. Each bit of the attenuator is controlled by a single voltage of either 0 V or
- 5 V. The attenuator bit values are 0.5 (LSB), 1, 2, 4, and 8 d B, for a total attenuation of 15.5 d B. The CMD280 has a low insertion loss of 3 d B at 10 GHz and the attenuation accuracy is typically 0.1 d B step error. The CMD280 is a 50 ohm matched design which eliminates the need for RF port matching. The CMD280 offers full passivation for increased reliability and moisture protection.
Functional Block Diagram
Vee P0 P1 P2 P3 P4
0.5d B 1d B 2d B 4d B 8d B
1 RF1
RF2
Electrical Performance
- Vee = -5 V, Vctl = 0 / -5 V, TA = 25 o C, F = 10 GHz
Parameter
Min Typ Max
Frequency Range
- 30
Insertion Loss
Attenuati...
