{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040QDIM3X2.5/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040QDIM3X2.5-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4040QDIM3X2.5-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4040QDIM3X2.5%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040QDIM3X2.5/NOPB, Automotive AEC-Q100 shunt voltage reference, fixed 2.5V output, ±1% tolerance, 35µVrms noise, 70 µA cathode current, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## Automotive-grade 2.5 V shunt reference in SOT-23-3 The LM4040QDIM3X2.5/NOPB is an automotive AEC-Q100 qualified shunt voltage reference from Texas Instruments, delivering a fixed 2.5 V output with ±1% initial tolerance. It is designed for precision biasing and ADC reference applications in automotive electronics, industrial controls, and battery-powered systems where a stable, low-noise voltage rail is required. ## What the current ratings mean for your circuit The 15 mA output current capability sets the load-driving limit — this shunt reference can bias multiple op-amp inputs or a low-power ADC reference input without an external buffer. The 70 µA minimum cathode current is the quiescent floor: the series resistor must be sized so that the sum of the load current and the cathode current stays above 70 µA to maintain regulation. Below that threshold the output voltage drifts outside the ±1% window. ## Noise and temperature drift — the so-what Wideband noise is specified at 35 µVrms over 10 Hz to 10 kHz, which is low enough for a 10- or 12-bit ADC reference without additional filtering in most automotive sensor chains. The three-pin footprint — cathode, anode, and no-connect — is shared across the LM4040 family, so a single PCB land pattern covers multiple voltage options.","metaTitle":"LM4040QDIM3X2.5/NOPB AEC-Q100 Shunt Reference, 2.5V ±1%","metaDescription":"Texas Instruments LM4040QDIM3X2.5/NOPB automotive AEC-Q100 shunt voltage reference, fixed 2.5V output, ±1% tolerance, 35µVrms noise, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±1%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"70 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"35µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"150ppm/°C","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3351","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4e1c3528e3eebcc37e5c67c06abddb5f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040QDIM3X2.5%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Is LM4040QDIM3X2.5/NOPB AEC-Q100 qualified?","answer":"Yes, this part is listed under the Automotive, AEC-Q100 series, making it suitable for automotive-grade applications requiring the AEC-Q100 qualification."},{"question":"How does LM4040QDIM3X2.5/NOPB compare to LM4040AIM3X2.5?","answer":"The LM4040AIM3X2.5 is the commercial-grade equivalent with the same 2.5 V output and ±1% tolerance but lacks AEC-Q100 qualification. The pinout and SOT-23-3 package are identical, so a board designed for the commercial part can accept the automotive-grade LM4040QDIM3X2.5/NOPB without layout changes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040QDIM3X2.5-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040QDIM3X2.5-NOPB 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}}