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  "failed": 0,
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  "review_kind": "expert",
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  "reviewer_role": "electrical-engineer",
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      "tests"
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  "assumptions": [
    "Full-scale sinusoidal input",
    "Ideal ADC quantizer; quantization noise is uniformly distributed",
    "No aperture jitter, thermal/reference noise, or harmonic distortion in the ideal-SNR path",
    "Standard ENOB is derived from SINAD (noise + distortion), not SNR",
    "n_bits is the ADC nominal integer resolution, not an effective-bits result"
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  "limitations": [
    "Ideal quantization only. ENOB from measured SINAD, not SNR."
  ],
  "boundary_conditions": [
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    "snr mode missing n_bits → MISSING_REQUIRED_INPUT",
    "enob mode missing SINAD_dB → MISSING_REQUIRED_INPUT",
    "n_bits not an integer (including 0 < n_bits < 1) → VALUE_MUST_BE_INTEGER",
    "n_bits ≤ 0 → VALUE_MUST_BE_POSITIVE",
    "n_bits > 32 → VALUE_OUT_OF_RANGE"
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  "sources": [
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      "title": "IEEE Std 1241-2010",
      "section": "9.4 Effective number of bits",
      "supports": "ADC ENOB definition; relationship between SINAD and ENOB",
      "kind": "standard"
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    {
      "title": "Analog Devices MT-001 — Taking the Mystery out of the Infamous Formula, SNR = 6.02N + 1.76 dB",
      "section": "Ideal quantization SNR for a full-scale sine",
      "url": "https://www.analog.com/media/en/training-seminars/tutorials/MT-001.pdf",
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        "ENOB": 6
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      "tol": 1e-12
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        "n_bits_equiv": 12
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        "ENOB": 11.501661129568106,
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      "code": "VALUE_MUST_BE_POSITIVE",
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      "error": "n_bits must be in 1…32"
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    {
      "id": "bad-bits-frac",
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      "inputs": {
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        "n_bits": 12.5
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      "error": "n_bits must be an integer"
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      "inputs": {
        "mode": "fft",
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      "expectError": "INVALID_MODE",
      "code": "INVALID_MODE",
      "error": "mode must be snr|enob"
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    {
      "id": "missing-bits",
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      "kind": "boundary",
      "inputs": {
        "mode": "snr"
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      "expectError": "MISSING_REQUIRED_INPUT",
      "code": "MISSING_REQUIRED_INPUT",
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      "id": "property-snr-monotonic",
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        98.08,
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      ]
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      "ok": true,
      "kind": "property",
      "detail": "ENOB(SINAD(N)) = N",
      "expect": true,
      "actual": true
    }
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