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Public evidence

electrical.opamp.error_budget

Machine-checked verification for calculation version 1.0.0 · tier expert_verified

Open calculator API Capability Download JSON CVP Manifest MCP Review policy

CVP: CVP VERIFIED · CVP protocol 1.0.0-proposed · Engineering assurance· DC error terms only — noise / AC excluded · Protocol · Schema · Production report

Declared partition coverage
PASS · 3/3 declared partitions (rss, worst_case, invalid-domain)
Versions
Calculation 1.0.0 · CVP protocol 1.0.0-proposed
CVP identity
2/2 property · digest 4786d5b81e3b

Verification

Legacy regression suite: 7/7 calculation tests · Production surface contract 4/4

Three distinct suites: educational examples on the calculator page, this legacy regression count (7/7 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

    This calculator CURRENT · Public schema 1.0.0 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Calculation version 1.0.0. CVP 1.0.0-proposed. 2/2 golden · 3/3 CVP boundary · 2/2 invalid · 2/2 property · 1/1 cross-interface · 1/1 CVP contract. digest 4786d5b81e3b.

  • Golden (oracle-backed) 2 / 2
  • CVP boundary 3 / 3
  • Invalid input 2 / 2
  • Property 2 / 2
  • Cross-interface 1 / 1
  • CVP contract 1 / 1
  • Interfaces PASS · UI (SSR) / REST / MCP
  • Interface claim ui-ssr is query-result HTML, not a live browser session.
  • Assurance Engineering
  • release artifacts aligned PASS
  • schema valid input executes PASS
  • engine success output validates schema PASS
  • schema rejects incomplete input PASS

Fingerprint sha256:2535dc4887b13952ecfc14da8c16d34ff32d8a2c2a1b100540a766d90364df6d

Input schema sha256:f07d31a9e7ba617b070e8a37fe1e663f50f63cc50eb89e7e0cee8b6fc672c684 · Output schema sha256:b1661dff540121de443cc46959bff65c134647b2183d65cb0807fbb78840d1f5 · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Build & scope

Engine identity and declared limitations.

Tool
opamp-error-budget
Engine
opamp-error-budget
Engine build
2026-09-10
Evidence core
2026-09-06T13:18:51.762Z
Rendered
2026-09-16T22:03:43.726Z
Last reviewed
2026-08-08

Assumptions

  • Ideal closed-loop DC; matched simplified Ib path
  • Ib and Ios terms use Rf as the dominant resistance scale

Limitations

  • DC Vos/Ib/Ios only — not noise/CMRR/PSRR

Sources

Standards and references supporting this tool specification. Methods are listed separately — they are algorithms, not bibliographic sources.

Legacy published checks

Golden and boundary cases from the legacy Evidence JSON. CVP property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the Manifest — including SKIP when a suite has no vectors.

IDKindStatusDetail
basicgoldenpassExpected G_abs=11 · Vout_err=0.011047171583713182 · Actual mode=noninv · combine=rss · G_abs=11 · Vos_V=0.001 · Ib_A=1e-7 · Ios_A=2e-8 · Rf_ohm=10000 · Rg_ohm=1000
worstgoldenpassExpected Vout_err=0.0122 · Actual mode=noninv · combine=worst_case · G_abs=11 · Vos_V=0.001 · Ib_A=1e-7 · Ios_A=2e-8 · Rf_ohm=10000 · Rg_ohm=1000
missing-RfboundarypassExpected MISSING_REQUIRED_INPUT · Actual MISSING_REQUIRED_INPUT
bad-modeboundarypassExpected INVALID_MODE · Actual INVALID_MODE
boundary-oaboundarypassExpected G_abs=11 · Actual mode=noninv · combine=rss · G_abs=11 · Vos_V=0.001 · Ib_A=0 · Ios_A=0 · Rf_ohm=10000 · Rg_ohm=1000
property-GpropertypassG=11
property-vospropertypasse_vos