MAX2036 Overview
Description
The MAX2036 8-channel variable-gain amplifier (VGA) and programmable octal mixer array is designed for high linearity, high dynamic range, and low-noise performance targeting ultrasound imaging and Doppler applications. Each amplifier features differential inputs and outputs and a total gain range of 50dB (typ).
Key Features
- differential inputs and outputs and a total gain range of 50dB (typ)
- In addition, the VGAs offer very low output-referred noise performance suitable for interfacing with 10-bit ADCs
- The device’s differential outputs are designed to directly drive ultrasound ADCs through an external passive anti-aliasing filter
- A switchable clamp is also provided at each amplifier’s output to limit the output signals, thereby preventing ADC overdrive or saturation
- Dynamic performance of the device is optimized to reduce distortion to support second-harmonic imaging
- The MAX2036 also integrates an octal quadrature mixer array and programmable LO phase generators for a complete CW beamforming solution
- The serial interface is designed to allow multiple devices to be easily daisy-chained in order to minimize program interface wiring
- The LO phase dividers can be programmed to allow 4, 8, or 16 quadrature phases
- The input path of each CW mixer consists of a selectable lowpass filter for optimal CWD noise performance
