STHV800L

Overview

The STHV800L is an octal, monolithic, high-voltage and high-speed pulse generator designed for medical ultrasound applications. It integrates controller logic compatible with 1.8 V and 3.3 V signals, level translators, MOSFET gate drivers, noise blocking diodes, and high-power P-channel and N-channel MOSFETs. Each channel provides over 2 A peak output current and includes active clamping to ground, anti-leakage blocks, thermal sensors, and integrated T/R switches with 8 Ω equivalent resistance. The device supports continuous wave modes via dedicated bridges and features self-biasing circuitry for low RX phase power consumption.

Feature Summary

• Octal architecture with independent channels providing ±90 V and ±2 A peak current
• Integrated T/R switches (8 Ω) and active clamping to ground for minimized injection change
• Compatible with 1.8 V and 3.3 V controller logic interfaces
• Dedicated continuous wave bridge reducing power dissipation and jitter

Applications

• Medical ultrasound imaging systems
• Piezoelectric transducer driving
• Capacitive transducer driving
• MEMS transducer driving

Procurement Notes

Verify the specific ordering suffix against official STMicroelectronics documentation to confirm pinout compatibility and package variations. Ensure the procurement source provides valid RoHS compliance data. Confirm that the 56-TFLGA package matches the design requirements for surface mount assembly.

Selection Notes

Select this component for designs requiring high integration of eight independent high-voltage channels. Verify that the system can support the required HV supplies and that the 56-VFLGA footprint fits the PCB layout. Consider the need for external decoupling capacitors as specified in the datasheet.

Part Context

The STHV800L belongs to the STHV800 series of ultrasound pulser ICs from STMicroelectronics. It utilizes proprietary BCD technology to combine low-voltage CMOS logic with robust power stages on a single chip, offering high integration for portable and point-of-care ultrasound topologies.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult STMicroelectronics sales offices for alternative recommendations based on specific application constraints.