ST's monolithic, high-voltage, high-speed pulser generator features four independent channels. It is designed for medical ultrasound applications, but can also be used for other piezoelectric, capacitive or MEMS transducers. The device comprises a controller logic interface circuit, level translators, MOSFET gate drivers, noise blocking diodes and high-power P-channel and N-channel MOSFETs as output stage for each channel, clamping-to-ground circuitry, anti-leakage, anti-memory effect block, thermal sensor and home video receiver (HVR) switch, which guarantees a strong decoupling during transmission phase. Moreover, the STHV748 includes self-biasing and thermal shutdown blocks.
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