Overview
The STHV800L is an octal, monolithic, high-voltage and high-speed pulse generator designed by STMicroelectronics. It is primarily intended for medical ultrasound applications but can also be used for other piezoelectric, capacitive, or MEMS transducers. The device integrates various components such as a controller logic interface, level translators, MOSFET gate drivers, noise blocking diodes, and high power P-channel and N-channel MOSFETs. Each channel features a dedicated bridge to reduce power dissipation and jitter, especially in continuous wave mode. The STHV800L also includes self-biasing circuitry, thermal protection, and an integrated TR-switch, ensuring low power consumption and strong decoupling during transmission phases.
Key Specifications
| Parameter | Value |
|---|---|
| Output Voltage | 0 to ±90 V |
| Peak Output Current | ±2 A (main half bridge), ±0.3 A (CW half bridge) |
| Operating Frequency | Up to 20 MHz |
| Jitter | Down to 20 ps (main half bridge), down to 10 ps (CW half bridge) |
| Logic Interface | 1.8 V to 3.6 V CMOS logic interface |
| Package | TFLGA-56LD 8x8x0.9mm |
| Operating Temperature | -40°C to 150°C |
| RoHS Compliance | Ecopack2 |
Key Features
- High-density ultrasound transmitter
- Two independent half-bridges per channel
- Power-up free operation
- Synchronization of input signals by an external clock (optional)
- Low-power, high-voltage, high-speed drivers
- Fully integrated real clamping-to-ground function
- 8 Ω synchronous active clamp
- Integrated TR-switch with 8 Ω ON resistance
- Receiver multiplexing function
- Noise blocking diodes and anti-leakage on output node
- Fully self-biasing architecture and thermal protection
- Latch-up free due to HV SOI technology
- Very few external passive components or supplies needed
Applications
The STHV800L is primarily designed for medical ultrasound applications. However, its versatility allows it to be used in other applications involving piezoelectric, capacitive, or MEMS transducers. It is suitable for any system requiring high-voltage and high-speed pulse generation with low power consumption and minimal external components.
Q & A
- What is the primary application of the STHV800L?
The STHV800L is primarily designed for medical ultrasound applications. - What is the output voltage range of the STHV800L?
The output voltage range is 0 to ±90 V. - What is the peak output current of the main half bridge?
The peak output current of the main half bridge is ±2 A. - Can the STHV800L be synchronized by an external clock?
Yes, the STHV800L can be synchronized by an external clock, but this feature is optional. - What is the operating frequency of the STHV800L?
The operating frequency can be up to 20 MHz. - Does the STHV800L require many external components?
No, the STHV800L requires very few external components, such as decoupling capacitors and a resistor for the thermal shutdown pin. - What is the logic interface voltage range of the STHV800L?
The logic interface voltage range is 1.8 V to 3.6 V CMOS logic interface. - What kind of package does the STHV800L come in?
The STHV800L comes in a TFLGA-56LD 8x8x0.9mm package. - Is the STHV800L RoHS compliant?
Yes, the STHV800L is RoHS compliant with an Ecopack2 rating. - What is the operating temperature range of the STHV800L?
The operating temperature range is -40°C to 150°C.
