Overview
The STHV748QTR, produced by STMicroelectronics, is a high-voltage, high-speed pulser generator designed for various applications requiring precise and powerful output. This monolithic device features four independent channels, each capable of delivering up to ±90 V output voltage and ±2 A peak output current. It is particularly suited for medical ultrasound imaging, pulse waveform generators, NDT ultrasound transmission, and driving piezoelectric, capacitive, or MEMS-based transducers. The device integrates multiple functionalities, including low-power floating high-voltage drivers, anti-cross conduction, and thermal protection, making it a robust and efficient solution for high-performance applications.
Key Specifications
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Output Voltage | -90 | 90 | V | |
| Output Current | -2 | 2 | A | |
| Operating Frequency | 20 | MHz | ||
| Supply Voltage (VDDP) | 2.7 | 3 | 3.6 | V |
| Supply Voltage (VDDM) | -3.6 | -3 | -2.7 | V |
| Logic Voltage (DVDD) | 2.4 | 3 | 3.6 | V |
| Fall/Rise Time | 28 | ns | ||
| 2nd Harmonic Distortion | -40 | dBc | ||
| Package | QFN64 |
Key Features
- 0 to ±90 V output voltage and up to ±2 A peak output current
- Up to 20 MHz operating frequency
- Embedded low-power, floating high-voltage drivers with external voltage rail options
- 3/5-levels output waveform and anti-cross conduction function
- Low 2nd harmonic distortion and fully integrated clamping-to-ground function
- Dedicated half bridge for continuous wave (CW) operations with low power consumption
- Fully integrated T/R switch with high bandwidth (up to 300 MHz)
- 2.4 V to 3.6 V CMOS logic interface and auxiliary integrated circuits for noise blocking and self-biasing
- Thermal protection and standby function
- Latch-up free due to HV SOI technology and minimal external passive components required
Applications
- Medical ultrasound imaging
- Pulse waveform generators
- NDT (Non-Destructive Testing) ultrasound transmission
- Driving piezoelectric, capacitive, or MEMS-based transducers
Q & A
- What is the maximum output voltage of the STHV748QTR?
The maximum output voltage is ±90 V. - What is the maximum output current of the STHV748QTR?
The maximum output current is ±2 A. - What is the operating frequency range of the STHV748QTR?
The operating frequency can go up to 20 MHz. - What types of output waveforms can the STHV748QTR generate?
The device can generate 3/5-levels output waveforms. - Does the STHV748QTR have built-in thermal protection?
Yes, it includes thermal protection with a thermal shutdown pin. - What is the package type of the STHV748QTR?
The package type is QFN64. - Can the STHV748QTR be used in continuous wave (CW) mode?
Yes, it has a dedicated half bridge for CW operations. - What is the bandwidth of the T/R switch in the STHV748QTR?
The T/R switch has a bandwidth of up to 300 MHz. - Is the STHV748QTR latch-up free?
Yes, it is latch-up free due to HV SOI technology. - What are the typical applications of the STHV748QTR?
Typical applications include medical ultrasound imaging, pulse waveform generators, NDT ultrasound transmission, and driving piezoelectric or MEMS-based transducers.
