Analog Devices MAX2086 Product Info

The MAX2086 is a highly integrated, 8-channel ultrasound transceiver optimized for high channel density, high-performance ultrasound systems.

The octal three-level, high-voltage (HV) pulser device generates high-frequency HV bipolar pulses for driving piezoelectric transducers in ultrasound systems from HV supplies. Each channel can transmit up to 200V_PP with up to 2.5A current capability and features an integrated 2A active clamp (Return to Zero). The current capability can be programmed down to 0.4A. The pulser can be controlled using embedded digital resources (SRAM and state machine) that can be used to support transmit beamforming resulting in dramatic savings in the number of interconnects and FPGA I/Os. The embedded digital resources are programmed through a high-speed serial interface and support sophisticated transmit techniques, like PWM, for burst shaping and apodization for beam shaping. Alternatively, the device can be controlled in a conventional manner by an external digital source (FPGA) through dedicated CMOS logic inputs. The MAX2086 also features eight independent low-noise, low-impedance active T/R switches. The highly compact receiver includes LNA, VGA, AAF, ADC, and several digital post-processing circuits (including a digital HPF). It achieves an ultra-low, 2.4dB noise figure at R_S = R_IN = 200Ω at a low 143mW per channel power dissipation when sampling at 50Msps. Additionally, there is a lower power mode of operation that achieves 100mW per channel, but has reduced AC performance. The receive channel has been optimized for second harmonic imaging with -70dBFS second harmonic distortion performance at F_IN = 5MHz over the full TGC range. Dynamic range has also been optimized for exceptional pulsed and color flow Doppler performance under high clutter conditions. The full receive channel exhibits an outstanding 81dBFS SNR