MAX2066 Overview
The MAX2066 high-linearity digital variable-gain amplifier (VGA) is a monolithic SiGe BiCMOS attenuator and amplifier designed to interface with 50Ω systems operating in the 50MHz to 1000MHz frequency range (See the Typical Application Circuit). The digital attenuator is controlled as a slave peripheral using either the SPI™patible interface or a parallel bus with 31dB total adjustment range in 1dB steps. An added feature allows “rapid-fire” gain selection between each of four steps, preprogrammed by the user through the SPIpatible interface. The 2-pin control allows the user to quickly access any one of four customized attenuation states without reprogramming the SPI bus. Because each stage has its own RF input and RF output, this ponent can be configured to either optimize NF (amplifier configured first), or OIP3 (amplifier last). The device’s performance