STHV748
5-level, ±90 V, 2 A high speed pulser with four independent channels-
Active
This monolithic, high-voltage, high-speed pulser generator features four independent channels. It is designed for medical ultrasound imaging applications, but it can also be used for driving other piezoelectric, capacitive or MEMS based transducers. The STHV748 comprises a controller logic interface circuit, level translators, MOSFET gate drivers, noise blocking diodes, and high-power P-channel and N-channel MOSFETs as the output stage for each channel, clamping-to-ground circuitry, anti-leakage, anti-memory effect block, thermal sensor, and a T/R switch which guarantees an effective decoupling during the transmission phase. Moreover, the STHV748 includes self-biasing and thermal shutdown blocks. Each channel can support up to five active output levels with two half bridges. The output stage of each channel is able to provide ±2 A peak output current. In order to reduce power dissipation during continuous wave mode, a dedicated half bridge is available and the peak current is limited to 0.6 A.
Download
Datasheet
Key Features
- 0 to ±90 V output voltage
- Up to 20 MHz operating frequency
- Embedded low-power, floating high-voltage drivers (external voltage rails can be also used)
- Mode operations:
3/5-levels output waveform ±2 A source and sink current Down ≤ 20 ps jitter Anti-cross conduction function Low 2nd harmonic distortion - Fully integrated clamping-to-ground function
8 Ω synchronous active clamp Anti-leakage on output node - Dedicated half bridge for continuous wave (CW) operations
≤ 0.1 W power consumption ±0.6 A source and sink current ≤ 10 ps jitter - Fully integrated T/R switch
13.5 Ω on resistance HV MOS topology to minimize current consumption Up to 300 MHz BW Receiver multiplexing function - 2.4 V to 3.6 V CMOS logic interface
- Auxiliary integrated circuits
Noise blocking diodes Fully self-biasing architecture Anti-memory effect for all internal HV nodes Thermal protection Standby function - Latch-up free due to HV SOI technology
- Very few external passive components needed
Circuit Diagram
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DS6123: Quad ± 90 V, ± 2 A, 3/5 levels, high speed ultrasound pulser
|
4.0 | 662 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
|
AN3240: Ultrasound HV pulser demonstration board
|
1.1 | 1,227 KB |
|
AN3961: STEVAL-IME003V1 demonstration board based on the STHV748 high voltage pulser
|
2.0 | 2,429 KB |
User Manual
| Description | Version | Size |
|---|---|---|
|
UM1083: How to upgrade the waveforms on the STEVAL-IME003V1 demonstration board
|
1.0 | 1,475 KB |
Related Tools and Software
Related Tools and Software
| Part Number | Description |
|---|---|
| STEVAL-IME003V1 | Demonstration board based on the STHV748 high voltage pulser |
Publications and Collaterals
Brochure
| Description | Version | Size |
|---|---|---|
|
Semiconductor solutions for healthcare applications
|
1.0 | 665 KB |
Sample & Buy
Top| Part Number | Marketing Status | Package | Packing Type | Operating Temperature (min) | Operating Temperature (max) | Automotive Grade | Order From ST | Unit Price (US$)* @ | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
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| STHV748QTR | Active | VFQFPN2 64 9x9x1.0 | Tray | -40 | 125 | _ | - |
| Ecopack2 | PDF XML | |||||||||||||||||||||
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors (**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices. |
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