Voltage controlled attenuators

摘要

RF Micro Devices has released two voltage controlled attenuators, the RFSA2013 and RFSA2023. They operate from 5 and 3 V and cover a wideband frequency range of 50 to 4000 MHz. The fully monolithic devices have good linearity with a third order intercept point greater than 50 dBm over a 30 dB gain control range. They incorporate a circuit architecture that provides overall performance in linearity, attenuation range, DC current and bandwidth, as well as a linear attenuation profile versus control voltage.