The STHV748 is a single-chip, high-voltage, high-speed pulser generator from STMicroelectronics that is designed for medical ultrasound imaging applications. It has four independent channels and can generate output voltages up to ±90 V at frequencies up to 20 MHz.
The STHV748 is a monolithic, high-voltage, high-speed pulser generator featuring four independent channels. It is designed for medical ultrasound imaging applications but can also drive other piezoelectric, capacitive, or MEMS-based transducers. The device includes embedded low-power, floating high-voltage drivers and supports mode operations such as 3/5-level output waveforms and continuous wave (CW) operations.
Key features include up to 20 MHz operating frequency, +2 A source and sink current per channel, and fully integrated clamping-to-ground functions. The chip utilizes HV MOS topology to minimize current consumption and includes self-biasing and thermal shutdown blocks. Each channel supports up to five active output levels with two half bridges.
| Output voltage | 0 to +90 V |
|---|---|
| Operating frequency | Up to 20 MHz |
| Source and sink current | +2 A |
| Package type | QFN64 |
| Logic interface | 2.4V to 3.6 V CMOS |
| Number of channels | Four independent channels |
It is designed for medical ultrasound imaging, pulse waveform generation, and NDT ultrasound transmission.
Yes, it includes a dedicated half bridge for continuous wave (CW) operations with 0.1 W power consumption.