EV12AS350 CER improvement from Revision A to Revision B
■This document aims at explaining how the ConversionError Rate (CER) is improved when moving from Revision A (EV12AS350A) to Revision B (EV12AS350B) of the EV12AS350 ADC.This document should be read with all other applicable documentation related to this part and in particular its datasheet.
●Introduction
■The Conversion Error Rate (CER) is the probability to exceed a specified error threshold for a sample at a maximum sampling rate. An unexpected behavior on the input stage of the ADC (revision Aor EV12AS350A) led to a degradation of the CER.
■In this document, the CER is characterized over different conditions of sampling rate (or clock frequency), input signal amplitude, temperature. As a first conclusion, CER is independent of input signal frequency and power supplies. CER of EV12AS350A is improved reducing the clock frequency, increasing the input signal amplitude and reducing the junction temperature.
■The results shown in this document should help the users of EV12AS350A to determine if the CER will impact their application. We are first describing the root cause of the phenomenon before showing performance results in different conditions. A possible software corrective solution is also provided before EV12AS350B is available.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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November 2017 |
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961 KB |
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