STHV200Q

Overview

The STHV200Q is a dual-channel high-voltage driver integrating linear and pulser stages within a 48-lead QFN package. It supports ±100 V supplies, delivering up to 3 A peak current in linear mode and 2 A in pulser mode. The linear stage offers four programmable gains (24–39 dB) with bandwidths up to 25 MHz. The pulser stage features half-bridge configuration with adjustable saturation currents. Integrated real-to-zero clamping, TR switches, and SPI-controlled diagnostics ensure precise control for medical ultrasound and industrial applications.

Feature Summary

• Dual-channel architecture supporting linear (up to 3 A, 180 Vpp) and pulser (up to 2 A, 200 Vpp) modes
• Programmable linear gains of 24, 32.5, 36, and 39 dB with bandwidths reaching 25 MHz at minimum gain
• Integrated real-to-zero clamp circuit with 1 A capability and active TR switch for receive isolation
• SPI interface controlling six registers with auto-diagnostic functions including thermal and short-circuit protection

Applications

• Medical ultrasound imaging systems
• NDT (Non-Destructive Testing) ultrasound transmission
• Piezoelectric transducer drivers
• Industrial ultrasonic applications

Procurement Notes

Verify the specific ordering code STHV200Q against the latest STMicroelectronics datasheet DB4895 Rev 2. Confirm that the 48-QFN (7x7 mm) package matches the design requirements. Ensure compliance with the specified operating supply range of 0 to ±100 V and validate that the SPI communication protocol aligns with the host controller capabilities.

Selection Notes

Select this component when simultaneous linear and pulser drive capabilities are required on shared output nodes. The device is suitable for applications demanding low harmonic distortion and fast turn-on/off times (1.8 us / 0.6 us). Consider the integrated TR switch and clamp features if minimizing external passive components and maximizing receive sensitivity is critical.

Part Context

The STHV200Q belongs to the STHV200 family of high-voltage drivers manufactured by STMicroelectronics. It utilizes HV SOI technology to provide latch-up immunity and robust performance. The 'Q' suffix denotes the specific QFN-7x7-48 lead package variant available for surface mount assembly.

Replacement Considerations

No direct public substitute part numbers are documented for the STHV200Q. Designers should evaluate other ST high-voltage drivers or specialized ultrasound transmitters based on channel count, voltage ratings, and package compatibility.