{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040C25QDBZRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040C25QDBZRG4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040C25QDBZRG4","factsUrl":"https://icboms.com/api/mcp/products/LM4040C25QDBZRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040C25QDBZRG4 precision shunt voltage reference, fixed 2.5 V output, ±0.5% tolerance, 100 ppm/°C drift, 15 mA output current, SOT-23-3 package, -40°C to 125°C.","salesMarkdown":"## 2.5 V shunt reference, ±0.5% — what the tolerance buys you The LM4040C25QDBZRG4 is a fixed 2.5 V shunt reference from TI's LM4040 family. It delivers a stable output with ±0.5% initial accuracy and a 100 ppm/°C temperature coefficient, making it a fit for ADC references, comparator thresholds, and regulator feedback dividers that need better than 1% end-of-life accuracy. ## Shunt topology — the resistor matters more than you think Being a shunt reference, it sinks current through a series resistor from the supply. The cathode current range is 80 µA minimum to 15 mA maximum — size the bias resistor so the device always sees at least 80 µA at minimum supply and maximum load, or the output drops out of regulation. That's clean enough for a 12-bit ADC reference; for 16-bit or higher, you'll want to add a band-limiting capacitor across the device. TI lists the LM4040C25QDBZRG4 as Active.","metaTitle":"TI LM4040C25QDBZRG4 Shunt Reference, 2.5 V ±0.5%, SOT-23-3","metaDescription":"Texas Instruments LM4040C25QDBZRG4 precision shunt voltage reference. Fixed 2.5 V output, ±0.5% tolerance, 100 ppm/°C drift. SOT-23-3 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)","Tolerance":"±0.5%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"80 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"35µVrms","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6100","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040C25QDBZRG4/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040C25QDBZRG4?","answer":"Initial tolerance is ±0.5%. Combined with the 100 ppm/°C drift, the total error over -40°C to 125°C stays under roughly 1.5% worst-case, which is fine for 8- to 10-bit accuracy budgets."},{"question":"What package does LM4040C25QDBZRG4 come in?","answer":"It ships in a SOT-23-3 surface-mount package (also listed as TO-236-3 / SC-59). The supplier device package is SOT-23-3, and the delivery form is Tape & Reel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040C25QDBZRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040C25QDBZRG4 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}}