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6.4 Histogram Analysis Tool
The Histogram Analysis tool can be used to estimate the effective resolution of the ADC resulting from
performance degradation caused by noise. Effective resolution is an indicator of the number of bits of ADC
measurement resolution resulting from performance losses caused by noise generated by the various sources
connected to the ADC when measuring a DC signal. The cumulative effect of noise coupling to the ADC output
(from sources such as the input drive circuits, the reference drive circuit, the ADC power supply, and the
ADC) is reflected in the standard deviation of the ADC output code histogram obtained by performing multiple
conversions of a DC input applied to a given channel.
The histogram corresponding to a DC input is displayed by clicking the Capture button. The example capture
shown in
Figure 6-6
is captured with the EVM configured by remove jumpers from pin 1 and 2 of jumper JP5 and
JP6, shorting pin [1-2] of JP1, JP2, JP3, and JP4 using 100-mil jumpers.
SBAU407 – APRIL 2023
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Figure 6-6. Histogram Analysis Tool
Copyright © 2023 Texas Instruments Incorporated
ADS8354EVM-PDK Operation
ADS8354EVM-PDK Evaluation Module
17
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