Wideband digital attenuator

2 August 2019 Telecoms, Datacoms, Wireless, IoT

The CMD280 from Custom MMIC is a wideband 5-bit digital attenuator that operates from DC to 30 GHz (covering the L, S, C, X, Ku, K and Ka bands). Each bit of this GaAs MMIC 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 dB, for a total attenuation of 15,5 dB with an attenuation accuracy of 0,1 dB.

It has a low insertion loss of 3 dB at 10 GHz and can handle an input power of up to 24 dBm. The CMD280 is available as a die and is matched to 50Ω which eliminates the need for RF port matching.

For more information contact Andrew Hutton, RF Design, +27 21 555 8400, [email protected]

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