ADCToolbox

A comprehensive MATLAB toolbox for ADC (Analog-to-Digital Converter) testing, characterization, and debugging.

# 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

### Spectral Analysis

Functions for analyzing the frequency-domain characteristics of ADC output data.

- **`specplot`** - Comprehensive spectrum analysis with ENOB, SNDR, SFDR, SNR, and THD calculations

- **`phaseplot`** - 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.

- **`wcalsine`** - Weight calibration using sine wave input (single or multi-dataset)

- **`cdacwgt`** - Calculate bit weights for multi-segment capacitive DAC

### 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

- **`ovfchk`** - Check ADC overflow by analyzing bit segment residue distributions