Digital RF Attenuator
Mini-Circuits model DAT-31-PN digital RF attenuator for 50Ω applications from DC to 2.4 GHz. The 5-b component provides 31 dB total attenuation with an LSB of 1 dB and MSB of 16 dB. The attenuation accuracy is typically within 0.1 dB. Insertion loss is typically 2 dB or less at the minimum attenuation setting, across the full frequency range. Model DAT-31-PN is based on an advanced silicon CMOS process, which delivers the performance of GaAs with the cost and reliability of silicon. The attenuator features a parallel control interface and fast switching speed: the component requires typically 1 µs to make the transition from 50% of the control signal to within 0.5 dB of the final attenuation value. Model DAT-31-PN is designed for dual supply voltages of +3 and ן VDC, and draws typically 100 µA current from each supply. It handles input power levels to +24 dBm, and achieves high linearity for demanding communications applications, with an input third-order intercept point (IP3) of typically +52 dBm.