Abstract
A transmitter front-end IC for ultrasound medical imaging applications is implemented using 30-V 0.18-μm Bipolar/CMOS/DMOS process. The proposed ultrasound transmitter front-end, consisting of voltage level-shifters and an output driver, achieves high integration and maintains good reliability while generating a 33ns output pulse signal in order to drive a large capacitive load, which represents the equivalent capacitance of the capacitive micromachined ultrasound transducer device. The proposed high-frequency transmitter achieves a delay of less than 20ns at 30 Vp–p output voltage while successfully driving a capacitive load of 44 pF and consumes an area of 0.34mm².
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