How to Characterize ADC Performance Accurately

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Pro Benchtop DC Power Supply
+ Pro Benchtop DC Power Supply
Pro Benchtop DC Power Supply
+ Pro Benchtop DC Power Supply

Characterize ADC Noise Performance

Characterizing analog-to-digital converter (ADC) performance requires a stable and low-noise voltage source to ensure accurate measurement of device behavior. The test setup includes configuring a precision voltage source, connecting it to the device under test, and monitoring voltage stability using an oscilloscope configured for low-noise measurements. Measurement parameters such as bandwidth limiting and RMS (root mean square) noise are used to quantify voltage fluctuations.

The characterization process evaluates how power supply noise impacts ADC output stability by comparing measurements under different noise conditions. External filters are introduced to reduce broadband noise from the voltage source, enabling cleaner input signals to the ADC. The resulting measurements allow observation of improved signal stability as noise is reduced, supporting accurate characterization of ADC performance under controlled power conditions.

ADC Characterization Solution

Accurate ADC characterization requires applying a stable input signal with minimal noise and observing the resulting behavior under controlled measurement conditions. The solution integrates a precision low-noise power source, external filtering stages, and an oscilloscope configured for noise analysis. External low noise and ultra-low noise filters reduce power supply noise from millivolt levels to microvolt levels, ensuring that the ADC input signal is not corrupted by supply-induced variations. The system enables high-resolution sourcing and monitoring of voltage and current, along with time-domain waveform visualization. This allows engineers to isolate the effects of power supply noise and accurately characterize ADC performance across different operating conditions.
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