{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF5040AIDG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"REF5040AIDG4","canonicalUrl":"https://icboms.com/texas-instruments/REF5040AIDG4","factsUrl":"https://icboms.com/api/mcp/products/REF5040AIDG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments REF5040AIDG4, series voltage reference, fixed 4.096V output, ±0.1% tolerance, 8ppm/°C drift, 10 mA output, 8-SOIC, tube.","salesMarkdown":"## 4.096V precision reference — the ADC/DAC full-scale anchor The REF5040AIDG4 from Texas Instruments is a series voltage reference that delivers a fixed 4.096V output — the classic full-scale voltage for 12-bit and 16-bit ADCs and DACs operating from a 5V rail. The 3µVp-p low-frequency noise (0.1 Hz to 10 Hz) keeps the noise floor low enough for 16-bit conversions without external filtering. ## What the drift and noise specs mean for your error budget At 8ppm/°C, the output shifts about 0.33 mV over a 100°C span — roughly 0.08% of the 4.096V output. For a 16-bit ADC with a 4.096V reference, that drift consumes about 5 LSBs of the total error budget. The 3µVp-p noise in the 0.1–10 Hz band is the flicker noise floor; it sets the practical resolution limit for low-frequency measurements. The 1.2mA supply current is the quiescent draw — the reference itself, not the load current. ## Input range and output drive Input voltage range is 4.296V to 18V — the 200 mV dropout above the output is the minimum headroom for regulation. The 10 mA output current can drive multiple ADC reference inputs or a small resistive divider; for higher loads, buffer the output. The series topology means no external resistor is needed, unlike a shunt reference. The base product number REF5040 covers multiple tolerance and temperature grades; the AIDG4 suffix identifies the ±0.1% grade in an SOIC-8 package shipped in tube. For tape-and-reel, check the REF5040AIDGKT ordering code.","metaTitle":"REF5040AIDG4 Voltage Reference, 4.096V ±0.1%, 8ppm/°C","metaDescription":"Texas Instruments REF5040AIDG4 precision series voltage reference: 4.096V fixed output, ±0.1% initial accuracy, 8ppm/°C drift, 3µVp-p noise.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tube","Tolerance":"±0.1%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","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":"8ppm/°C","Voltage - Output (Min/Fixed)":"4.096V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0000","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/REF5040AIDG4/alternatives.json"},"ai":{"faq":[{"question":"What is the accuracy of REF5040AIDG4?","answer":"Initial accuracy is ±0.1% of the 4.096V output. Temperature drift is 8ppm/°C typical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/REF5040AIDG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/REF5040AIDG4 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}}