The ATEK1231 from ATEK MIDAS is a 5-Bit Digital Step Attenuator that operates from DC to 18 GHz. This 5-bit attenuator provides an attenuation range from 0 to 31 dB and has an insertion loss of less than 7.1 dB. It has a USB interface which is used to control and requires a bias supply voltage. The attenuator is available in a custom-milled metal enclosure that measures 36.4 x 59.9 x 24.8 mm with the RF input and output matched to 50 ohms. It is ideal for use in wideband receivers, telecommunication, test equipment, SATCOM, and SDR applications.