MAX2038

19-4375; Rev 0; 1/09 KIT ATION EVALU E L B AVAILA www.DataSheet4U.com Ultrasound VGA Integrated with CW Octal Mixer Features o 8-Channel Configuration o High Integration for Ultrasound Imaging Applications o Pin Compatible with the MAX2037 Ultrasound VGA VGA Features o 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 o ±0.25dB Absolute Gain Error o 120mW Consumption per Channel o Switchable Output VGA Clamp Eliminating ADC Overdrive o Fully Differential VGA Outputs for Direct ADC Drive o Variable Gain Range Achieves 42dB Dynamic Range o -70dBc HD2 at VOUT = 1.5VP-P and fIN = 5MHz o Two-Tone Ultrasound-Specific* IMD3 of -52dBc at VOUT = 1.5VP-P and fIN = 5MHz CW Doppler Mixer Features o Low Mixer Noise of -155dBc/Hz at 1kHz Offset from 1.25MHz Carrier o Serial-Programmable LO Phase Generator for 4, 8, 16 LO Quadrature Phase Resolution o Optional Individual Channel 4 x fLO LO Input Drive Capability o 269mW Power Consumption per Channel (Normal Power Mode) and 226mW Power Consumption per Channel (Low-Power Mode) o CWD Implementation Is Fully Compliant with All Patents Related to Ultrasound Imaging Techniques General Description 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 appl...