{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF5045AIDG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"REF5045AIDG4","canonicalUrl":"https://icboms.com/texas-instruments/REF5045AIDG4","factsUrl":"https://icboms.com/api/mcp/products/REF5045AIDG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments REF5045AIDG4 series voltage reference, 4.5V fixed output, ±0.1% initial accuracy, 8 ppm/°C temperature coefficient, 3 µVp-p noise, 10 mA output, -40°C to 125°C, 8-SOIC package.","salesMarkdown":"The Texas Instruments REF5045AIDG4 is a precision series voltage reference that delivers a fixed 4.5 V output with ±0.1% initial accuracy and an 8 ppm/°C temperature coefficient. The 3 µVp-p low-frequency noise spec (0.1 Hz to 10 Hz) is the number that matters for a 16-bit or 20-bit ADC — it sets the noise floor below the converter's LSB, so the reference does not become the dominant error source in the measurement path. ## Output drive and supply headroom The REF5045AIDG4 can source up to 10 mA of output current, which is enough to bias a reference buffer or multiple ADC reference inputs on the same rail. The input voltage range of 4.7 V to 18 V gives the designer headroom to run the reference from a 5 V or 12 V rail without a separate LDO. Quiescent supply current is 1.2 mA typical, so the reference adds minimal overhead to the system power budget — relevant for multi-channel data-acquisition boards where every milliamp counts.","metaTitle":"REF5045AIDG4 4.5V Series Voltage Reference, 8 ppm/°C, 8-SOIC","metaDescription":"Texas Instruments REF5045AIDG4 precision series voltage reference: 4.5V fixed output, ±0.1% tolerance, 8 ppm/°C drift, 3 µVp-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":"4.7V ~ 18V","lifecycle_stage":"eol_hot","Current - Output":"10 mA","Current - Supply":"1.2mA","Base Product Number":"REF5045","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)":"4.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.3700","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/REF5045AIDG4/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to REF5045AIDG4 in this family?","answer":"The base product number is REF5045, and the REF5045AID (without the G4 suffix) is the same device in the same 8-SOIC package with identical electrical specs — the G4 suffix historically indicated a lead-free / RoHS-compliant finish, which is now standard across the family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/REF5045AIDG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/REF5045AIDG4 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}}