Section goal

Sampling contracts, digital wrappers, calibration hooks, and data-validity debug for converter-facing interfaces.

How to study this section

1. Start with topic hubs to learn contract and ownership.

2. Use mechanism and reports pages to map symptoms to root causes.

3. Use debug and worked-example pages for war-room practice.

4. Close with checklist and PPA pages before signing any change.

Topics

1. adc-digital-wrapper/ — ADC Digital Wrapper

2. sample-timing-contract/ — Sample Timing Contract

3. calibration-hooks/ — Calibration Hooks

4. data-validity-debug/ — Data Validity Debug

Related topics

• AMS course hub

AMS deep dive

Wrapper and sampling contracts determine data trustworthiness.

Concept diagram

CONVERTER DATA FLOW

sampling clock -> wrapper -> sync boundary -> system consumer

Metric graph

INVALID SAMPLE BURSTS

time --->  _|¯¯|__|¯¯¯|____|¯|_

Reports and artifacts

• sample validity ratio

• calibration convergence

• CDC audit

• overflow/stale sample counters

Mini case study

Mode transition changed sample phase and invalidated wrapper framing assumptions.

Debug branches

• Sample timing contract

• Calibration hook behavior

• Wrapper CDC integrity

Senior review question

Ask: what boundary condition proves this topic is actually closed?