STHV748S

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Quad ±90 V, ±2 A, 3/5 level, ESD-enhanced high-speed ultrasound pulser

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Product overview

Description

This monolithic, high-voltage, high-speed pulser generator features four independent channels. It is designed for medical ultrasound imaging applications, but can also be used to drive piezoelectric, capacitive or MEMS based transducers. The STHV748S is composed of 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. It also includes clamping-to-ground circuitry, anti-leakage, anti-memory effect block, thermal sensor, and a T/R switch which guarantees effective decoupling during the transmission phase. The STHV748S also 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.
An ESD reinforced structure was developed to prevent high voltage overshoots and inrush current due to cabled transducer reflections. Each HV output is supported by a dedicate HV diode network to withstand possible reflections, mitigating excessive voltage overshoot that could lead to device damage.
  • All features

    • Pinout compatibility with STHV748
    • Recirculation current protection
    • 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-level output waveform
      • ±2 A source and sink current
      • Down to ≤ 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
      • 205 fs RMS jitter [100 Hz-20 kHz]
    • 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
    • 1.8 V to 3.6 V CMOS logic interface
      • New digital input compatibility @ 1.8 V
    • Auxiliary integrated circuits
      • Noise blocking diodes
      • Fully self-biasing architecture
      • Anti-memory effect for all internal HV nodes
      • Thermal protection
      • Standby function
      • Reinforced diodes on HV outputs for protection by recirculation current
    • Latch-up free due to HV SOI technology
    • Very few external passive components needed

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Industrial

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-IME011V2

      Active

      Evaluation board based on the STHV748S high voltage pulser

      Healthcare and Wellness Solution Eval Boards ST
      STEVAL-IME011V2

      Description:

      Evaluation board based on the STHV748S high voltage pulser

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STMicroelectronics - STHV748S

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STHV748SQ
Active
VFQFPN 64 9x9x1.0 mm Industrial Ecopack3

STHV748SQ

Package:

VFQFPN 64 9x9x1.0 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 64 9x9x1.0 mm

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) 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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STHV748SQ No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tray VFQFPN 64 9x9x1.0 mm - - PHILIPPINES 18.5625 / 1

STHV748SQ

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

18.5625 / 1

ECCN (EU)

NEC

Packing Type

Tray

Package

VFQFPN 64 9x9x1.0 mm

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

18.5625 / 1

Country of Origin

PHILIPPINES

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors