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医疗超声应用中,图像清晰与否直接关系到心脏病专家是否能够发现病人心脏中存在有问题的血液湍流。对于测量血液速度和方向的多普勒成像技术,由于血流返回的信号非常小,面临的困难尤其大。对于超声接收信号通路中的ADC转换器,这种困难就转化为要求具有极低的总谐波失真(THD)和高信噪比(SNR)。本文将讨论在这种极具挑战性的应用中ADC必
Medical ultrasound applications, the image is clear or not directly related to whether the cardiologist can find the heart of the patient there is a problem of blood turbulence. For Doppler imaging, which measures blood velocity and direction, the difficulties are particularly large due to the very small signal of blood flow return. For an ADC converter in an ultrasonic receive signal path, this difficulty translates into requiring very low total harmonic distortion (THD) and high signal-to-noise ratio (SNR). This article will discuss ADC in this extremely challenging application