MAX2038CCQ+

The MAX2038 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 42dB (typ). In addition, the VGAs offer very low output-referred noise performance suitable for interfacing with 12-bit ADCs.
Features
♦ 8-Channel Configuration
♦ High Integration for Ultrasound Imaging Applications
♦ Pin Compatible with the MAX2037 Ultrasound VGAVGA
Features
♦ Maximum Gain, Gain Range, and Output-Referred Noise Optimized for Interfacing with 12-Bit ADCs Maximum Gain of 29.5dB Total Gain Range of 42dB 22nV/√Hz Ultra-Low Output-Referred Noise at 5MHz
♦ ±0.25dB Absolute Gain Error
♦ 120mW Consumption per Channel
♦ Switchable Output VGA Clamp Eliminating ADC Overdrive
♦ Fully Differential VGA Outputs for Direct ADC Drive
♦ Variable Gain Range Achieves 42dB Dynamic Range
♦ -70dBc HD2 at VOUT = 1.5VP-P and fIN = 5MHz
♦ Two-Tone Ultrasound-Specific
* IMD3 of -52dBc at VOUT = 1.5VP-P and fIN = 5MHzCW Doppler Mixer
Features
♦ Low Mixer Noise of -155dBc/Hz at 1kHz Offset from 1.25MHz Carrier
♦ Serial-Programmable LO Phase Generator for 4, 8, 16 LO Quadrature Phase Resolution
♦ Optional Individual Channel 4 x fLO LO Input Drive Capability
♦ 269mW Power Consumption per Channel (Normal Power Mode) and 226mW Power Consumption per Channel (Low-Power Mode)Applications Ultrasound Imaging Sonar