Integrated ultrasound transmitter with cascode trimming
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United States of America Patent
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Jan 7, 2014
Grant Date -
Aug 16, 2012
app pub date -
Feb 10, 2011
filing date -
Feb 10, 2011
priority date (Note) -
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Abstract
Transmitters and waveform generators are provided for ultrasound imaging. Low-voltage transistors are connected in cascode with the high-voltage transistors used to generate the ultrasound pulses. The low-voltage transistors trim the high-voltage transistors, adjusting the drive strength of the high-voltage transistors. By trimming, the rise and fall time of the pulses generated by the high-voltage transistors may be more closely matched.
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