{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF5040IDR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"REF5040IDR","canonicalUrl":"https://icboms.com/texas-instruments/REF5040IDR","factsUrl":"https://icboms.com/api/mcp/products/REF5040IDR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments REF5040IDR, series voltage reference, fixed 4.096V output, ±0.05% tolerance, 3ppm/°C temperature coefficient, 3µVp-p noise, 10 mA output, 8-SOIC package, -40°C to 125°C.","salesMarkdown":"## Fixed 4.096V output — the ADC reference sweet spot That voltage is not arbitrary — it maps cleanly to the full-scale range of many 12- to 16-bit ADCs and DACs, giving a 1 mV per LSB step at 12 bits without external scaling. The 4.096V rail also sits comfortably within the 4.296V to 18V input range, so it can be fed from a 5V or 12V supply rail without a pre-regulator. The ±0.05% initial tolerance means the output is within 2 mV of 4.096V at 25°C — no trim pot needed in most production runs. For a 16-bit system the 3 µVp-p noise (0.1 Hz to 10 Hz) becomes the limiting factor, not the DC accuracy. ## 10 mA output — driving the reference input The 10 mA output current is enough to bias the reference input of most SAR ADCs and the internal buffer of a precision DAC. The 1.2 mA supply current is the quiescent draw of the reference itself — it does not include the load current, so budget the total from the input rail. The series topology means the load current comes from the input, not from a resistor divider, so the output stays stable under varying load. ## 8-SOIC package and temperature range The 8-SOIC footprint is shared by many precision references, so a layout designed for one can often accept this part without a board spin.","metaTitle":"REF5040IDR 4.096V Voltage Reference, ±0.05% Tolerance","metaDescription":"Texas Instruments REF5040IDR series voltage reference, fixed 4.096V output, ±0.05% tolerance, 3ppm/°C drift, 3µVp-p noise. Active lifecycle, 8-SOIC package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.05%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","Reference Type":"Series","Voltage - Input":"4.296V ~ 18V","lifecycle_stage":"eol_hot","Current - Output":"10 mA","Current - Supply":"1.2mA","Base Product Number":"REF5040","Noise - 0.1Hz to 10Hz":"3µVp-p","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"8-SOIC","Temperature Coefficient":"3ppm/°C","Voltage - Output (Min/Fixed)":"4.096V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.1900","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/REF5040IDR/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of the REF5040IDR?","answer":"The initial tolerance is ±0.05%, which keeps the output within 2 mV of 4.096V at 25°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/REF5040IDR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/REF5040IDR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}