ADCToolbox

A toolbox for analyze and calibrate data from analog to digital converter (ADC) https://github.com/Arcadia-1/ADCToolbox.git

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, compute optimal scaling and effective resolution

- **`plotres`** - Plot partial-sum residuals of an ADC bit matrix as scatter plots

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

Shortcut Functions

Convenience wrappers that combine multiple steps into a single call.

- **`plotressin`** - Plot partial-sum residuals directly from bit matrix (auto-calibrates via `wcalsin`)

- **`errsinv`** - Shortcut for `errsin` with value-mode binning (`xaxis='value'`)

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