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Ultrasound pulser targets portable medical apps

Posted: 08 Jul 2011     Print Version  Bookmark and Share

Keywords:ultrasound  pulser IC  medical diagnostic  MOSFET 

Supertex Inc. introduces the HV7355, an eight channel, unipolar, high-speed ultrasound pulser IC designed for portable medical diagnostic ultrasound applications that delivers up to 150V output and 1.5A ultrasound pulses.

The IC brings together controller logic interface circuitry, level translators, MOSFET gate drive buffers, and high voltage and high current P- and N-channel MOSFETs as the output stage for each channel.

HV7355 features matched delay times, up to 18MHz operating frequency, and ±1.5A source and sink currents with up to a 150V swing per channel when set to pulse, or ±500mA currents when set to conserve power. The direct coupling topology of this IC not only eliminates one high voltage capacitor per channel, it also makes designing the circuit board easier, according to the company.

According to Supertex, the high-voltage pulser IC is also ideal for piezoelectric, capacitive or MEMS sensing applications.

The HV7355 is available in a 56-lead QFN package (HV7355K6-G). The part is RoHS compliant. Samples are available from stock. Lead-time for production quantities is 4-6 weeks. Pricing is Rs.361.61 ($8.10) each for the HV7355K6-G in 1K quantities.

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