Part Audit Report

cherepanyadima

cherepanyadima

Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.

flux

I’ll audit the part metadata, locate the official LM1815 datasheet if needed, update the Datasheet property, then compare the symbol, footprint, and pin definitions against the manufacturer documentation.
Created a project doc

Part Audit Report

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Part Audit Report Scope
Audit of the published LM1815N part metadata, 14-pin schematic symbol, PDIP footprint, and terminal definitions against the official Texas Instruments LM1815 datasheet (Rev. F, SNOSBU8F; package addendum dated 2025-11-11).
Official datasheet: https://www.ti.com/lit/ds/symlink/lm1815.pdf
Identification and metadata Key specifications
  • Function: adaptive variable-reluctance sensor amplifier with zero-crossing detection, adaptive hysteresis, one-shot reference pulse, and selectable gated timing output.
  • Operating supply: 2.5 V to 12 V from the electrical-characteristics table. The feature summary says operation from 2 V to 12 V; use 2.5 V as the characterized minimum.
  • Supply current: 3.6 mA typical, 6 mA maximum under the stated test conditions.

flux

Audit complete. I added the official TI datasheet URL and confirmed all 14 pin numbers/functions match; key issues are missing manufacturer/package metadata, unspecified pin types/descriptions, obsolete PDIP status, and a footprint drill definition that needs verification.
Full findings: Part Audit Report.
Fix metadata and pins
Verify footprint drills
Complete part cleanup
Normalize MPN
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Pins

Symbol

Layout

Preview

NC
Pin Number
6
VIN
Pin Number
3
PDC
Pin Number
7
RCT
Pin Number
14
GND
Pin Number
2
NC
Pin Number
4
GOUT
Pin Number
10
NC
Pin Number
1
TIN
Pin Number
9
REFOUT
Pin Number
12
NC
Pin Number
13
SEL
Pin Number
11
MODE
Pin Number
5
VCC
Pin Number
8
Part Audit Report
Scope
Audit of the published LM1815N part metadata, 14-pin schematic symbol, PDIP footprint, and terminal definitions against the official Texas Instruments LM1815 datasheet (Rev. F, SNOSBU8F; package addendum dated 2025-11-11).
Official datasheet: https://www.ti.com/lit/ds/symlink/lm1815.pdf
Identification and metadata

Table

FieldCurrent partDatasheet / official TIResult
MPNlm1815nOrderable device LM1815N/NOPB; device marking LM1815NMinor mismatch: casing and /NOPB suffix are missing
ManufacturerEmptyTexas Instruments (originally National Semiconductor)Missing
Descriptionlm1815nAdaptive Variable Reluctance Sensor AmplifierIncomplete
Part TypeEmptySensor/interface amplifier ICMissing
Pin count1414Match
PackageNot set in metadataPDIP-14, TI package code NFF / NFF0014AMissing in metadata
LifecycleNot setLM1815N/NOPB is listed obsolete; SOIC tape-and-reel variant remains active in the current addendumMissing
Datasheet URLWas empty; updated during this auditOfficial TI PDFFixed
Designator prefixUIntegrated circuitMatch
Key specifications
  • Function: adaptive variable-reluctance sensor amplifier with zero-crossing detection, adaptive hysteresis, one-shot reference pulse, and selectable gated timing output.
  • Operating supply: 2.5 V to 12 V from the electrical-characteristics table. The feature summary says operation from 2 V to 12 V; use 2.5 V as the characterized minimum.
  • Supply current: 3.6 mA typical, 6 mA maximum under the stated test conditions.
  • Operating temperature: -40 °C to +125 °C.
  • Absolute maximum supply voltage: 12 V.
  • Maximum power dissipation: 1250 mW, with thermal derating required; DIP junction-to-ambient thermal resistance is stated as 80 °C/W.
  • Signal capability: minimum normal signal stated as 150 mVpp; inputs over 120 Vpp can be handled with an external series resistor.
  • Zero-crossing threshold: -25 mV to +25 mV.
  • Mode 1 minimum arming threshold: 30/45/60 mV min/typ/max.
  • Mode 2 minimum arming threshold: 200/300/450 mV min/typ/max.
  • One-shot pulse width: t = 0.673 × R × C; recommended maximum timing resistor is 150 kΩ.
  • Recommended maximum input frequency for the one-shot: Fin(max) = 1 / (1.346 × R × C).
Pin cross-check

Table

PinCurrent symbol nameDatasheet name/functionName resultMissing description / recommended electrical type
1NCNC, no internal connection; may be groundedMatchNo description; No Connect / passive
2GNDGroundMatchNo description; Power input
3VINSignal InputMatchNo description; Analog input
4NCNC, no internal connection; may be groundedMatchNo description; No Connect / passive
5MODEMode SelectMatch, abbreviatedNo description; Configuration input (open, VCC, or GND selects mode)
6NCNC, no internal connection; may be groundedMatchNo description; No Connect / passive
7PDCPeak DetectorFunction matches, abbreviation is unclearNo description; Analog timing/storage node
8VCCV+ supplyMatchNo description; Power input
9TINTiming InputMatch, abbreviatedNo description; Logic input
10GOUTGated OutputMatch, abbreviatedNo description; Logic output; CMOS compatible, not guaranteed to drive TTL
11SELInput SelectMatch, abbreviatedNo description; Logic input
12REFOUTReference PulseFunction matchesNo description; Open-collector-style output behavior is indicated by leakage/saturation specifications; logic output
13NCNC, no internal connection; may be groundedMatchNo description; No Connect / passive
14RCTRC TimingFunction matches, abbreviatedNo description; Analog timing node
All 14 pin numbers and functional assignments match the TI top-view connection diagram. However, every terminal currently has Pin Type: Unspecified, and no terminal has a Pin Description property. This weakens ERC behavior and makes the part less self-documenting.
Symbol review
  • Pin numbering and left/right DIP ordering match the top-view datasheet diagram.
  • Pin names are functionally correct.
  • Abbreviations PDC, TIN, GOUT, SEL, REFOUT, and RCT are understandable but differ from TI's displayed names. This is not an electrical error, but full datasheet names or descriptions would improve clarity.
  • Four separate NC terminals correctly use pin numbers 1, 4, 6, and 13.
  • Main mismatch: all terminal electrical types are unspecified and descriptions are absent.
Footprint review
  • Footprint asset identifies the intended LM1815N/NOPB PDIP package.
  • Observed geometry is consistent with a standard 14-pin 0.3-inch PDIP: 2.54 mm lead pitch, 7.62 mm row spacing, and pin 1 marked with a rectangular pad/asterisk.
  • Pad numbering-to-function mapping matches the symbol.
  • Critical concern: the inspected pad definitions show 1.524 mm copper pad diameter but do not expose a drill/hole-size or explicit through-hole connected-layer definition. The package is through-hole, so a plated drill must be present. This should be visually/manufacturing-export verified before use; if the holes are truly absent, the footprint is unusable and requires correction.
  • Package metadata is not set even though the footprint represents NFF/PDIP-14.
High priority
  1. Verify that every footprint pad has a plated drill. The current layout data does not show drill geometry.
  2. Set terminal electrical types and add datasheet-derived pin descriptions for all 14 pins.
Medium priority
  1. Set Manufacturer Name to Texas Instruments.
  2. Set Package or Case Code to NFF (PDIP-14) and Mount to Through Hole.
  3. Replace the generic description with Adaptive Variable Reluctance Sensor Amplifier and set an appropriate Part Type.
  4. Record lifecycle status in the description or implementation notes: LM1815N/NOPB is obsolete according to the current TI package addendum.
Low priority
  1. Normalize the MPN to LM1815N/NOPB if this part is intended to represent the lead-free orderable variant, or LM1815N if it intentionally represents the marked/base device.
  2. Consider expanding abbreviated pin labels or retaining them while adding full Pin Description properties.
Overall assessment
The logical pinout and DIP ordering are correct. The main quality gaps are incomplete part metadata, absent pin descriptions/electrical types, and an unresolved footprint drill-definition concern. The official datasheet URL has been added to the project properties.

  • Scope

  • Identification and metadata

  • Key specifications

  • Pin cross-check

  • Symbol review

  • Footprint review

  • Flagged mismatches and recommended corrections

  • High priority

  • Medium priority

  • Low priority

  • Overall assessment