{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX31865AAP+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX31865AAP","canonicalUrl":"https://icboms.com/analog-devices/MAX31865AAP","factsUrl":"https://icboms.com/api/mcp/products/MAX31865AAP%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX31865AAP+ RTD-to-digital converter, 20-SSOP, ±0.5°C accuracy, SPI output, 3V-3.6V supply, -40°C to 125°C.","salesMarkdown":"## Precision RTD front-end in a 20-SSOP The MAX31865AAP+ integrates a sigma-delta ADC, comparator, and register bank to convert a platinum RTD's resistance directly to a digital temperature reading over SPI — no external signal chain needed. Its ±0.5°C maximum accuracy means the measurement error budget for the full system — including RTD tolerance, reference resistor drift, and PCB thermocouple effects — starts from this floor. For a Class A PT100, the combined error at 100°C is roughly ±0.7°C, tight enough for industrial process monitoring or medical thermometry. ## Supply rail and temperature envelope Operates from 3V to 3.6V, matching common 3.3V digital rails — the same supply that powers the host MCU's SPI port. No separate analog rail is required, which simplifies the power tree. The 20-SSOP package keeps the die temperature within spec when the PCB sees airflow or a heatsink under the exposed pad.","metaTitle":"MAX31865AAP+ RTD-to-Digital Converter, ±0.5°C Accuracy","metaDescription":"Analog Devices MAX31865AAP+ RTD-to-digital converter in 20-SSOP. ±0.5°C max accuracy, SPI output, 3V-3.6V supply. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Accuracy":"±0.5°C(Max)","Function":"Temp Monitoring System (Sensor)","Topology":"ADC (Sigma Delta), Comparator, Register Bank","Output Fan":"No","Output Type":"SPI","Sensor Type":"External","Output Alarm":"No","Mounting Type":"Surface Mount","Package / Case":"20-SSOP (0.209\\\", 5.30mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"20-SSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.1","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.10000","currency":"USD"},{"qty":10,"price":"$7.31800","currency":"USD"},{"qty":25,"price":"$6.97760","currency":"USD"},{"qty":100,"price":"$6.05860","currency":"USD"},{"qty":250,"price":"$5.78628","currency":"USD"},{"qty":500,"price":"$5.27574","currency":"USD"},{"qty":1000,"price":"$4.59500","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the MAX31865AAP+ accuracy and how does it affect system design?","answer":"The ±0.5°C max accuracy sets the ADC's contribution to the total measurement error. For a PT100 RTD with 0.1% reference resistor, the combined uncertainty at 0°C is under ±0.6°C — suitable for Class A or better temperature probes."},{"question":"What package does the MAX31865AAP+ come in?","answer":"20-SSOP (0.209\", 5.30mm width) in tube delivery. The supplier device package is 20-SSOP."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX31865AAP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX31865AAP when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}