Abstract
Integrated circuit transmitters allow for ultrasound imaging with both pulsed and continuous waves. High voltage and low voltage switches are integrated onto a same semiconductor chip. The high voltage switches are used for pulsed wave operation, and the low voltage switches are used for continuous wave operation. Power dissipation may be reduced by using low voltage circuits for the continuous wave operation. Both the pulsed and continuous waveforms are output on a common output from the integrated circuit. For continuous wave operation, one or more of the high voltage switches is used to provide a low resistance path to the common output or ground. For pulsed wave operation, one or more of the low voltage switches is used to provide a low resistance path to a common output or ground. A switch used for generating waveforms is also used for forming a low resistance path.
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