Expected Output: 04_debug_analog
This document shows the expected console output and example figures from all examples in python/src/adctoolbox/examples/04_debug_analog/.
Summary
All examples in 04_debug_analog demonstrate analog output analysis capabilities:
Total Examples: 15
Categories: - Sine Fitting: exp_a01 (4-parameter fitting) - Error Analysis: exp_a02-a04 (by value, by phase, jitter calculation) - Harmonic Decomposition: exp_a11-a12 (time domain and polar) - Statistical Analysis: exp_a21-a25 (PDF, spectrum, autocorrelation, envelope, comparison) - Nonlinearity: exp_a31-a32 (static nonlinearity fitting, INL/DNL) - Phase Plane: exp_a41-a42 (standard and error phase plane)
exp_a01_fit_sine_4param.py
Description: Basic 4-parameter sine fitting with noise.
[Sinewave] [Fs=800.0 MHz] [Fin=10.123457 MHz] [Amplitude=0.499 V] [DC=0.500 V] [Noise RMS=20.00 mV]
[Expected] [DC= 0.5000 V] [Amplitude= 0.4990 V] [Freq=10.1234567 MHz] [Phase= 0.0000 deg]
[Fitted ] [DC= 0.4999 V] [Amplitude= 0.4985 V] [Freq=10.1233928 MHz] [Phase= 0.1283 deg]
[Residual error ] fitted rms=19.73 mV, input noise=20.00 mV, error percentage=1.37% -> [PASS]
[Frequency error] freq error=63.9330 Hz, percentage=0.000632% -> [PASS]
[Phase error ] phase error=0.1283 deg -> [PASS]
[Reconstruction ] reconstruction error (rms) =5.62e-04 V -> [PASS]
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a01_fit_sine_4param.png]
exp_a02_analyze_error_by_value.py
Description: Analyze ADC errors binned by input signal level.
[Config] Fs=800 MHz, Fin=10.12 MHz, N=8192
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a02_analyze_error_by_value_bins.png]
exp_a03_analyze_error_by_phase.py
Description: Decompose noise into AM/PM components vs signal phase.
[Config] Fs=800 MHz, Fin=10.12 MHz, N=65536, A=0.49
================================================================================
Mode: include_base_noise=True
================================================================================
=== Figure 1: Pure Noise Cases (With Base Noise) ===
Thermal Only
[Expected ] [AM= 0 uV] [PM= 0 uV] [Base= 50 uV] [Total=50.0 uV]
[Calculated] [AM= 5.2 uV] [PM= 0.0 uV] [Base=49.7 uV] [Total=49.9 uV] [R2=0.996]
AM Only
[Expected ] [AM= 50 uV] [PM= 0 uV] [Base= 0 uV] [Total=35.4 uV]
[Calculated] [AM=50.1 uV] [PM= 0.0 uV] [Base= 0.0 uV] [Total=35.4 uV] [R2=0.991]
PM Only
[Expected ] [AM= 0 uV] [PM= 50 uV] [Base= 0 uV] [Total=35.4 uV]
[Calculated] [AM= 0.0 uV] [PM=50.3 uV] [Base= 0.0 uV] [Total=35.5 uV] [R2=0.991]
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a03_analyze_error_by_phase_1_with_base_noise.png]
=== Figure 2: Mixed Noise Cases (With Base Noise) ===
AM + Thermal
[Expected ] [AM= 50 uV] [PM= 0 uV] [Base= 30 uV] [Total=46.4 uV]
[Calculated] [AM=50.0 uV] [PM= 0.0 uV] [Base=30.0 uV] [Total=46.4 uV] [R2=0.980]
PM + Thermal
[Expected ] [AM= 0 uV] [PM= 50 uV] [Base= 30 uV] [Total=46.4 uV]
[Calculated] [AM= 0.0 uV] [PM=50.0 uV] [Base=30.0 uV] [Total=46.4 uV] [R2=0.985]
AM + PM + Thermal
[Expected ] [AM= 0 uV] [PM= 0 uV] [Base= 58 uV] [Total=58.0 uV]
[Calculated] [AM= 0.0 uV] [PM= 7.9 uV] [Base=57.8 uV] [Total=58.1 uV] [R2=0.997]
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a03_analyze_error_by_phase_2_with_base_noise.png]
=== Figure 3: Mixed Noise Cases (AM+PM) (With Base Noise) ===
AM + PM (equal)
[Expected ] [AM= 0 uV] [PM= 0 uV] [Base= 50 uV] [Total=50.0 uV]
[Calculated] [AM= 0.0 uV] [PM= 2.8 uV] [Base=50.0 uV] [Total=50.1 uV] [R2=0.997]
AM(30) + PM(50)
[Expected ] [AM= 0 uV] [PM= 40 uV] [Base= 30 uV] [Total=41.2 uV]
[Calculated] [AM= 0.0 uV] [PM=40.3 uV] [Base=29.8 uV] [Total=41.2 uV] [R2=0.974]
AM(50) + PM(30)
[Expected ] [AM= 40 uV] [PM= 0 uV] [Base= 30 uV] [Total=41.2 uV]
[Calculated] [AM=39.6 uV] [PM= 0.0 uV] [Base=30.1 uV] [Total=41.1 uV] [R2=0.962]
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a03_analyze_error_by_phase_3_with_base_noise.png]
================================================================================
Mode: include_base_noise=False
================================================================================
=== Figure 1: Pure Noise Cases (Without Base Noise) ===
Thermal Only
[Expected ] [AM= 0 uV] [PM= 0 uV] [Base= 50 uV] [Total=50.0 uV]
[Calculated] [AM=50.0 uV] [PM=49.7 uV] [Base= 0.0 uV] [Total=49.9 uV] [R2=0.996]
AM Only
[Expected ] [AM= 50 uV] [PM= 0 uV] [Base= 0 uV] [Total=35.4 uV]
[Calculated] [AM=50.1 uV] [PM= 0.0 uV] [Base= 0.0 uV] [Total=35.4 uV] [R2=0.991]
PM Only
[Expected ] [AM= 0 uV] [PM= 50 uV] [Base= 0 uV] [Total=35.4 uV]
[Calculated] [AM= 0.0 uV] [PM=50.3 uV] [Base= 0.0 uV] [Total=35.5 uV] [R2=0.991]
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a03_analyze_error_by_phase_1_no_base_noise.png]
=== Figure 2: Mixed Noise Cases (Without Base Noise) ===
AM + Thermal
[Expected ] [AM= 50 uV] [PM= 0 uV] [Base= 30 uV] [Total=46.4 uV]
[Calculated] [AM=58.3 uV] [PM=30.0 uV] [Base= 0.0 uV] [Total=46.4 uV] [R2=0.980]
PM + Thermal
[Expected ] [AM= 0 uV] [PM= 50 uV] [Base= 30 uV] [Total=46.4 uV]
[Calculated] [AM=30.0 uV] [PM=58.3 uV] [Base= 0.0 uV] [Total=46.4 uV] [R2=0.985]
AM + PM + Thermal
[Expected ] [AM= 0 uV] [PM= 0 uV] [Base= 58 uV] [Total=58.0 uV]
[Calculated] [AM=57.8 uV] [PM=58.4 uV] [Base= 0.0 uV] [Total=58.1 uV] [R2=0.997]
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a03_analyze_error_by_phase_2_no_base_noise.png]
=== Figure 3: Mixed Noise Cases (AM+PM) (Without Base Noise) ===
AM + PM (equal)
[Expected ] [AM= 0 uV] [PM= 0 uV] [Base= 50 uV] [Total=50.0 uV]
[Calculated] [AM=50.0 uV] [PM=50.1 uV] [Base= 0.0 uV] [Total=50.1 uV] [R2=0.997]
AM(30) + PM(50)
[Expected ] [AM= 0 uV] [PM= 40 uV] [Base= 30 uV] [Total=41.2 uV]
[Calculated] [AM=29.8 uV] [PM=50.1 uV] [Base= 0.0 uV] [Total=41.2 uV] [R2=0.974]
AM(50) + PM(30)
[Expected ] [AM= 40 uV] [PM= 0 uV] [Base= 30 uV] [Total=41.2 uV]
[Calculated] [AM=49.8 uV] [PM=30.1 uV] [Base= 0.0 uV] [Total=41.1 uV] [R2=0.962]
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a03_analyze_error_by_phase_3_no_base_noise.png]
exp_a04_jitter_calculation.py
Description: Calculate jitter from spectrum analysis.
[Config] Fs=7 GHz, N=65536, A=0.490 V, DC=0.000 V
[Jitter Sweep] 1.0 fs to 10.0 ps (30 points)
[Frequencies] Testing 3 frequencies: [100, 1000, 2000] MHz
================================================================================
Row 1: Without Thermal Noise
================================================================================
[1/3] Fin_target = 100 MHz, Fin = 100.082 MHz, Bin = 937/65536
Correlation = 1.0000, Avg Error = 0.54%
[2/3] Fin_target = 1000 MHz, Fin = 1000.076 MHz, Bin = 9363/65536
Correlation = 1.0000, Avg Error = 0.52%
[3/3] Fin_target = 2000 MHz, Fin = 2000.046 MHz, Bin = 18725/65536
Correlation = 1.0000, Avg Error = 0.39%
================================================================================
Row 2: With 50 uV Thermal Noise
================================================================================
[1/3] Fin_target = 100 MHz, Fin = 100.082 MHz, Bin = 937/65536
Correlation = 1.0000, Avg Error = 133.18%
[2/3] Fin_target = 1000 MHz, Fin = 1000.076 MHz, Bin = 9363/65536
Correlation = 1.0000, Avg Error = 5.23%
[3/3] Fin_target = 2000 MHz, Fin = 2000.046 MHz, Bin = 18725/65536
Correlation = 1.0000, Avg Error = 4.44%
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a04_jitter_calculation.png]
exp_a11_decompose_harmonics.py
Description: Decompose signal into harmonics in time domain.
[Config] Fs=800 MHz, Fin=10.12 MHz, N=8192
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a11_decompose_harmonics.png]
exp_a12_decompose_harmonics_polar.py
Description: Decompose harmonics with polar phase visualization.
[Config] Fs=800 MHz, Fin=99.902344 MHz, Bin=1023, N=8192
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a12_decompose_harmonics_polar.png]
exp_a21_analyze_error_pdf.py
Description: Analyze error probability density functions for various non-idealities.
[Config] Fs=800 MHz, Fin=97.0 MHz, Bin=7947, N=65536
[Config] A=0.490 V, DC=0.500 V, Resolution=12 bits
====================================================================================================
Case | Non-Ideality | mu (LSB) | sigma (LSB) | KL Div
----------------------------------------------------------------------------------------------------
1 | Thermal Noise | -0.000 | 0.754 | 0.0002
2 | Quantization Noise | 0.000 | 1.172 | 0.1231
3 | Jitter Noise | -0.000 | 1.762 | 0.0522
4 | AM Noise | -0.000 | 0.722 | 0.0494
5 | Static HD2 (-80 dBc) | 0.000 | 0.151 | 0.1316
6 | Static HD3 (-70 dBc) | -0.000 | 0.459 | 0.2649
7 | Memory Effect | 0.000 | 0.711 | 0.0271
8 | Incomplete Settling | 0.000 | 0.085 | 0.0354
9 | RA Gain Error | -0.000 | 4.756 | 0.0946
10 | RA Dynamic Gain | -0.000 | 14.053 | 0.0787
11 | AM Tone | -0.000 | 48.786 | 0.0648
12 | Clipping | -0.000 | 0.111 | 0.7130
13 | Drift | 0.000 | 21.047 | 0.2127
14 | Reference Error | -0.000 | 0.678 | 0.2261
15 | Glitch | -0.000 | 15.241 | 1.6148
====================================================================================================
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a21_analyze_error_pdf.png]
exp_a22_analyze_error_spectrum.py
Description: Analyze error spectrum for various non-idealities.
[Config] Fs=800 MHz, Fin=97.0 MHz, Bin=7947, N=65536
[Config] A=0.490 V, DC=0.500 V
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a22_analyze_error_spectrum.png]
exp_a23_analyze_error_autocorrelation.py
Description: Analyze error autocorrelation for various non-idealities.
[Config] Fs=800 MHz, Fin=97.0 MHz, Bin=7947, N=65536
[Config] A=0.490 V, DC=0.500 V
====================================================================================================
Case | Non-Ideality | ACF[0] | ACF[1] | ACF[10]
----------------------------------------------------------------------------------------------------
1 | Thermal Noise | 1.0000 | 0.0029 | 0.0016
2 | Quantization Noise | 1.0000 | 0.0249 | -0.0024
3 | Jitter Noise | 1.0000 | -0.0020 | 0.0015
4 | AM Noise | 1.0000 | 0.0001 | 0.0018
5 | Static HD2 (-80 dBc) | 1.0000 | 0.0435 | -0.8228
6 | Static HD3 (-70 dBc) | 1.0000 | -0.6501 | -0.6424
7 | Memory Effect | 1.0000 | -0.0443 | -0.1179
8 | Incomplete Settling | 1.0000 | -0.4859 | -0.4789
9 | RA Gain Error | 1.0000 | 0.0286 | 0.0267
10 | RA Dynamic Gain | 1.0000 | -0.5601 | -0.5696
11 | AM Tone | 1.0000 | 0.7235 | 0.2326
12 | Clipping | 1.0000 | -0.0193 | -0.0082
13 | Drift | 1.0000 | 0.9999 | 0.9994
14 | Reference Error | 1.0000 | -0.0781 | -0.7964
15 | Glitch | 1.0000 | 0.0041 | -0.0024
====================================================================================================
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a23_analyze_error_autocorrelation.png]
exp_a24_analyze_error_envelope_spectrum.py
Description: Analyze error envelope spectrum for various non-idealities.
[Config] Fs=800 MHz, Fin=97.0 MHz, Bin=7947, N=65536
[Config] A=0.490 V, DC=0.500 V
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a24_analyze_error_envelope_spectrum.png]
exp_a25_spectra.py
Description: Compare spectra across various non-idealities.
[Config] Fs=800 MHz, Fin=97.0 MHz, Bin=7947, N=65536
[Config] A=0.490 V, DC=0.500 V, ADC Range=[0, 1]
====================================================================================================
Case | Non-Ideality | SFDR (dB) | SNDR (dB) | THD (dB)
----------------------------------------------------------------------------------------------------
1 | Thermal Noise | 97.15 | 65.72 | -99.31
2 | Quantization Noise | 83.93 | 61.84 | -97.93
3 | Jitter Noise | 89.85 | 58.34 | -94.75
4 | AM Noise | 97.86 | 65.96 | -99.31
5 | Static HD2 (-80 dBc) | 80.01 | 79.66 | -80.18
6 | Static HD3 (-70 dBc) | 70.01 | 69.97 | -70.18
7 | Memory Effect | 76.44 | 66.18 | -79.37
8 | Incomplete Settling | 85.95 | 84.72 | -86.13
9 | RA Gain Error | 67.61 | 49.66 | -71.77
10 | RA Dynamic Gain | 40.90 | 40.24 | -40.82
11 | AM Tone | 32.04 | 29.03 | -125.69
12 | Clipping | 97.52 | 82.29 | -94.76
13 | Drift | 37.40 | 43.77 | -126.36
14 | Reference Error | 67.44 | 66.60 | -66.84
15 | Glitch | 70.18 | 38.22 | -73.17
====================================================================================================
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a25_spectra.png]
exp_a31_fit_static_nonlin.py
Description: Fit static nonlinearity coefficients from sine wave.
[Sinewave] Fs=[800.00 MHz], Fin=[70.02 MHz], Bin/N=[717/8192], A=[0.500 Vpeak]
[Nonideal] Noise RMS=[500.00 uVrms], Theoretical SNR=[56.99 dB], Theoretical NSD=[-143.01 dBFS/Hz]
[Injected: k2= 0.0000, k3= 0.0000] [Extracted: k2= 0.0002, k3=-0.0001]
[Injected: k2= 0.0100, k3= 0.0000] [Extracted: k2= 0.0099, k3=-0.0003]
[Injected: k2= 0.0000, k3= 0.0100] [Extracted: k2= 0.0001, k3= 0.0097]
[Injected: k2= 0.0100, k3= 0.0100] [Extracted: k2= 0.0099, k3= 0.0098]
[Saved] -> D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a31_fit_static_nonlin.png
exp_a32_inl_from_sine_sweep_length.py
Description: Sweep data length for INL/DNL extraction from sine wave.
[INL/DNL Sweep] [Fs = 800 MHz, Fin = 80 MHz]
[HD2 = -80 dB, HD3 = -66 dB, Noise = 50.0 uV]
[N = 2^10 = 1024] [ENOB = 10.61] [INL: -110.85 to 118.80] [DNL: -1.00 to 196.37] LSB
[N = 2^14 = 16384] [ENOB = 10.59] [INL: -28.50 to 40.99] [DNL: -1.00 to 17.49] LSB
[N = 2^18 = 262144] [ENOB = 10.59] [INL: -22.56 to 30.00] [DNL: -1.00 to 2.83] LSB
[N = 2^22 = 4194304] [ENOB = 10.59] [INL: -20.02 to 28.24] [DNL: -0.59 to 0.60] LSB
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a33_compute_inl_sweep_length.png]
exp_a41_analyze_phase_plane.py
Description: Analyze phase plane plots for various non-idealities.
[Config] Fs=800 MHz, Fin=97.0 MHz, Bin=7947, N=65536
[Config] A=0.490 V, DC=0.500 V, Resolution=12 bits
====================================================================================================
Case | Non-Ideality | Lag | Outliers
----------------------------------------------------------------------------------------------------
1 | Thermal Noise | 2 | 0
2 | Quantization Noise | 2 | 0
3 | Jitter Noise | 2 | 0
4 | AM Noise | 2 | 0
5 | Static HD2 (-80 dBc) | 2 | 0
6 | Static HD3 (-70 dBc) | 2 | 0
7 | Memory Effect | 2 | 0
8 | Incomplete Settling | 2 | 0
9 | RA Gain Error | 2 | 0
10 | RA Dynamic Gain | 2 | 0
11 | AM Tone | 2 | 0
12 | Clipping | 2 | 0
13 | Drift | 2 | 0
14 | Reference Error | 2 | 0
15 | Glitch | 2 | 164
====================================================================================================
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a41_analyze_phase_plane.png]
exp_a42_analyze_error_phase_plane.py
Description: Analyze error phase plane (1000x more sensitive for detecting harmonics).
[Config] Fs=800 MHz, Fin=97.0 MHz, Bin=7947, N=65536
[Config] A=0.490 V, DC=0.500 V, Resolution=12 bits
================================================================================
Case | Non-Ideality | RMS Error | Peak Error
--------------------------------------------------------------------------------
1 | Thermal Noise | 179.8 uV | 764.3 uV
2 | Quantization Noise | 280.2 uV | 515.5 uV
3 | Jitter Noise | 423.0 uV | 2656.3 uV
4 | AM Noise | 174.4 uV | 969.8 uV
5 | Static HD2 (-80 dBc) | 36.0 uV | 86.9 uV
6 | Static HD3 (-70 dBc) | 110.1 uV | 198.7 uV
7 | Memory Effect | 171.2 uV | 446.2 uV
8 | Incomplete Settling | 20.3 uV | 671.8 uV
9 | RA Gain Error | 1127.6 uV | 2309.9 uV
10 | RA Dynamic Gain | 3434.2 uV | 8073.5 uV
11 | AM Tone | 12255.7 uV | 24510.5 uV
12 | Clipping | 26.5 uV | 260.9 uV
13 | Drift | 4465.6 uV | 9736.5 uV
14 | Reference Error | 162.0 uV | 347.2 uV
15 | Glitch | 4633.2 uV | 99857.2 uV
================================================================================
[Save fig] -> [D:\ADCToolbox\python\src\adctoolbox\examples\04_debug_analog\output\exp_a42_analyze_error_phase_plane.png]
================================================================================
Key Observations:
--------------------------------------------------------------------------------
* HD2/HD3 cases show characteristic parabola/S-curve shapes even at -80/-70 dBc
* Clipping shows sharp breaks at signal extremes
* Memory effect and RA gain errors create subtle curvature
* Thermal/quantization noise appear as horizontal scatter (good linearity)
* This method is 1000x more sensitive than regular phase planes for detecting harmonics
================================================================================
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