STMicroelectronics STHV800 High-Speed Ultrasound Pulser

STMicroelectronics STHV800 High-Speed Ultrasound Pulser is an octal, monolithic, high-voltage pulse generator designed for medical ultrasound applications. The device integrates a controller logic interface circuit compatible with both 1.8V and 3.3V input signals, level translators, MOSFET gate drivers, noise-blocking diodes, and high-power P-channel and N-channel MOSFETs as the output stage for each channel. Each channel consists of active clamping to ground circuitry (RTZ), an anti-leakage and anti-memory block, a thermal sensor to protect the device and an integrated T/R switch (just 8Ω as equivalent resistor) to connect the HV output to its LV output, guaranteeing strong decoupling during the transmission phase. The eight independent T/R switches can be used in both a dedicated RX chain per channel or in a multiplexing configuration. In addition, the STHV800 includes self-biasing circuitry which allows very low power consumption.