{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX31865AAP+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX31865AAPT","canonicalUrl":"https://icboms.com/analog-devices/MAX31865AAPT","factsUrl":"https://icboms.com/api/mcp/products/MAX31865AAP%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX31865AAP+T, RTD-to-Digital Converter, ±0.5°C Max Accuracy, SPI Output, 3V–3.6V Supply, -40°C to 125°C, 20-SSOP Surface Mount Package.","salesMarkdown":"## RTD front-end in a single 20-SSOP package The MAX31865AAP+T from Analog Devices is a complete RTD-to-digital converter that integrates a sigma-delta ADC, comparator, and register bank into a single 20-SSOP package. It converts the resistance of an external platinum RTD (Pt100 or Pt1000) directly to a digital reading over an SPI interface, with a guaranteed maximum accuracy of ±0.5°C across the full -40°C to 125°C operating range. This part is designed for industrial temperature sensing applications—motor drives, HVAC controllers, process transmitters, and battery-management systems—where a direct digital link to an MCU or FPGA is needed without external signal conditioning. ## ±0.5°C accuracy — what it means for the loop The ±0.5°C maximum error includes the ADC, reference, and linearisation. The sigma-delta topology rejects line noise. ## SPI interface — direct to the MCU bus Communication is over a standard SPI bus, which means any microcontroller with a spare SPI port can read the conversion result directly from the on-chip register bank. No I²C address conflicts, no bit-banging a custom protocol. The 3V to 3.6V supply range lets it run from a 3.3V rail common on Cortex-M and FPGA boards. The register bank stores configuration, fault status, and the conversion result, so the host can poll or interrupt on threshold alarms—though this variant does not include a dedicated alarm output pin. ## Active production, current-date-code supply The MAX31865AAP+T carries an Active lifecycle status per the manufacturer and is ROHS3 compliant. No last-time-buy or end-of-life notices are active. This part is available through independent distribution in sealed reels with consistent date codes; we source and quote it to order against an RFQ.","metaTitle":"MAX31865AAP+T RTD-to-Digital Converter, ±0.5°C Accuracy, SPI","metaDescription":"MAX31865AAP+T from Analog Devices: RTD-to-digital converter with ±0.5°C max accuracy, SPI output, 3V–3.6V supply, -40°C to 125°C range, 20-SSOP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","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"},{"qty":2000,"price":"$4.42481","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/MAX31865.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the accuracy of MAX31865AAP+T?","answer":"This is a system-level spec that includes the ADC, reference, and linearisation for a Pt100 or Pt1000 RTD."},{"question":"Does MAX31865AAP+T have an SPI interface?","answer":"Yes, the output type is SPI. The part communicates over a standard SPI bus, reading the conversion result from the on-chip register bank."},{"question":"Is MAX31865AAP+T compatible with Pt1000?","answer":"Yes, the MAX31865 is designed for both Pt100 and Pt1000 RTDs. The register bank includes configuration bits to select the RTD type and excitation current. The ±0.5°C accuracy spec holds for either sensor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX31865AAPT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX31865AAPT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}