True. But offset is another accuracy error to be taken into account.Maximum Nonlinearity: 0.010%
All unstated important specs are missing.Hi,
True. But offset is another accuracy error to be taken into account.
Expected bandwidth is an inportant parameter to know to find a suitable solutin.
Klaus
what else defines all IO parameters?Oops, missed that one. It is required for DC applications BW=5Hz.
In other words, if the PWM ripple is greater than the resolution of the ADC then non monotonic missing codes or random hysteresis may occur due to the noise caused by Vpp ripple, again, if it exceeds the resolution.Post #1 says accuracy 0.03 % FSR. Without additional specs, this must be read as total error (INL + offset + gain error) over used temperature range. 5 Hz BW has been added later on. State-of-the-art "isolation amplifiers" (actually implemented as AD-isolator-DA chain) are achieving this accuracy level with delta-sigma modulators. PWM modulators with analog ramp generators are typically missing the requirement due to capacitor loss factor.
In other words, if the PWM ripple is greater than the resolution of the ADC then non monotonic missing codes or random hysteresis may occur due to the noise caused by Vpp ripple, again, if it exceeds the resolution. Non-monotonic errors can occur in uC's that do not separate Agnd from Dgnd in the layout as digital noise shifts the ground of Vref used by the ADC and in such cases, causes non-monotonic or non-linearity errors where ground noise exceeds the lsb. (least significant bit.) I have personally observed this error in early ADC's designed by infamous analog author Jerome xxx for Burr-Brown in Mil-Std 883 hirel 12 bit ADC ceramic hybrids (circa 1977), so any should expect this to occur in any modern uC with poor layouts for separating digital ground from analog ground.Post #1 says accuracy 0.03 % FSR. Without additional specs, this must be read as total error (INL + offset + gain error) over used temperature range. 5 Hz BW has been added later on. State-of-the-art "isolation amplifiers" (actually implemented as AD-isolator-DA chain) are achieving this accuracy level with delta-sigma modulators. PWM modulators with analog ramp generators are typically missing the requirement due to capacitor loss factor.
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