Reference Voltage for Multiple

2023-11-01 70浏览
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The achievable accuracy for systems with multiple analog-to-digital converters (ADCs) depends directly on the reference voltage(s) applied to the ADCs. Medical ultrasound imaging systems, for example, commonly include a large number of ADCs in the receiver's beamformer electronics, usually organized in groups of 16, 24, 32, etc. Maximum beam accuracy requires that you minimize errors in this path. Poor accuracy in the reference voltage of individual ADCs degrades the overall system, as does the distributed load, which consists of many individual resistive and capacitive loads. Several approaches can provide the reference voltage for such ADC arrays:

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