ADCToolbox

Version 1.21 (160 KB) by L. Jie
A toolbox for analyze and calibrate data from analog to digital converter (ADC) https://github.com/Arcadia-1/ADCToolbox.git
5.0
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Updated 1 Feb 2026

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Read more on: https://github.com/Arcadia-1/ADCToolbox/blob/matlabdev/matlab/README.md
# ADCToolbox - MATLAB
A comprehensive MATLAB toolbox for ADC (Analog-to-Digital Converter) testing, characterization, and debugging. This toolbox provides advanced functions for spectral analysis, calibration, linearity testing, signal processing, and performance evaluation of ADCs.
## Function Categories
### Dashboard and Comprehensive Analysis
Unified analysis functions that combine multiple testing methods.
- **`adcpanel`** - Comprehensive ADC analysis dashboard with automatic data format handling
### Spectral Analysis
Functions for analyzing the frequency-domain characteristics of ADC output data.
- **`plotspec`** - Comprehensive spectrum analysis with ENOB, SNDR, SFDR, SNR, and THD calculations
- **`plotphase`** - Coherent phase spectrum analysis with polar display
### Signal Fitting and Frequency Analysis
Functions for extracting signal parameters and frequency information.
- **`sinfit`** - Four-parameter iterative sine wave fitting (amplitude, phase, DC, frequency)
- **`findfreq`** - Find dominant frequency using sine wave fitting
- **`findbin`** - Find coherent FFT bin for a given signal frequency
- **`tomdec`** - Thompson decomposition of signal into sinewave, harmonics, and errors
### Calibration Functions
Functions for calibrating ADC bit weights and correcting errors.
- **`wcalsin`** - Weight calibration using sine wave input (single or multi-dataset)
- **`cdacwgt`** - Calculate bit weights for multi-segment capacitive DAC
- **`plotwgt`** - Visualize bit weights with radix annotations
### Linearity and Error Analysis
Functions for analyzing ADC linearity performance.
- **`inlsin`** - Calculate INL and DNL from sine wave data using histogram method
- **`errsin`** - Analyze sine wave fit errors with histogram binning
### Noise Transfer Function Analysis
Functions for analyzing noise-shaping ADCs (Delta-Sigma modulators).
- **`ntfperf`** - Analyze noise transfer function performance and SNR improvement
### Utility Functions
Supporting functions for signal processing and analysis.
- **`alias`** - Calculate aliased frequency after sampling
- **`ifilter`** - Ideal FFT-based filter to retain specified frequency bands
- **`bitchk`** - Check ADC overflow by analyzing bit segment residue distributions

Cite As

L. Jie and Z. Zhang. ADCToolbox (https://www.mathworks.com/matlabcentral/fileexchange/<...>), MATLAB Central File Exchange.

MATLAB Release Compatibility
Created with R2025a
Compatible with R2014b and later releases
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.21

- plotwgt: Added wgtsca and effres outputs
- adcpanel: Automatic maxCode calculation for bit-wise data
- wcalsin: Improve robustness under abnormal data
1.20

- Add function 'adcpanel' for automatic one-stop ADC data analysis! More on 'help adcpanel'
- Add auto mode for 'sidebin' option in plotspec
1.10

- Fixed some naming problems
- Add a new function 'plotwgt' to display the weighting of ADC code
- Improve display quality for 'errsin'
- Add an auto mode (now default) for calculating noise floor in 'plotspec'
1.01

Rename specplot -> plotspec, phaseplot -> plotphase to avoid name conflict.
1.0

The first formal release with complete documentation.
0.12

- FGCalSine now supports multiple datasets with different frequencies (see function notes)
0.11

- fix specPlot noise floor calculation
- add errHistSine input dimension check
0.1