CMD282

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...