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STHV748

Quad ±90 V, ±2 A, 3/5 levels, high-speed ultrasound pulser
  • active 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.

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Errata Sheet
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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

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS6123: Quad ± 90 V, ± 2 A, 3/5 levels, high speed ultrasound pulser
4.1 662 KB

Application Notes

Description Version Size
pdf
AN3240: Ultrasound HV pulser demonstration board
1.1 1,227 KB
pdf
AN3961: STEVAL-IME003V1 demonstration board based on the STHV748 ultrasound pulser
3.0 2,100 KB

User Manual

Description Version Size
pdf
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
pdf
Semiconductor solutions for healthcare applications
1.0 665 KB

Sample & Buy

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Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
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Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STHV748QTRActiveVFQFPN2 64 9x9x1.0Tray-40125_-Distributor reported inventory date: 2014-09-02
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE4161
Ecopack2PDF
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(*) 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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