{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040D30QDBZRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040D30QDBZRG4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040D30QDBZRG4","factsUrl":"https://icboms.com/api/mcp/products/LM4040D30QDBZRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040D30QDBZRG4 precision shunt voltage reference, fixed 3V output, ±1% tolerance, 35µVrms noise, 15 mA output, -40°C to 125°C, SOT-23-3 package, Tape & Reel.","salesMarkdown":"Its ±1% initial tolerance and 35µVrms noise (10Hz to 10kHz) make it a clean voltage anchor for an ADC reference input or a comparator threshold divider in an industrial sensor interface. The shunt topology means the reference sinks current through an external resistor from a higher supply rail; the cathode current floor is 82 µA, and the maximum output current is 15 mA. That 15 mA ceiling sets the load budget — if the reference feeds multiple ADC inputs or a low-impedance divider, the total load current plus the quiescent cathode current must stay under 15 mA. ## Temperature range and package — where it fits The temperature coefficient is 150 ppm/°C — typical for a standard-grade shunt reference.","metaTitle":"TI LM4040D30QDBZRG4 Shunt Voltage Reference, 3V ±1%","metaDescription":"Texas Instruments LM4040D30QDBZRG4 precision shunt reference, fixed 3V output, ±1% tolerance, 35µVrms noise, -40°C to 125°C. Active production.","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":"±1%","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":"82 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":"150ppm/°C","Voltage - Output (Min/Fixed)":"3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040D30QDBZRG4/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040D30QDBZRG4?","answer":"±1% initial tolerance. This is a standard precision grade for a shunt reference; it is suitable for general-purpose ADC references, comparator thresholds, and bias supplies where 1% accuracy is sufficient."},{"question":"Can LM4040D30QDBZRG4 replace LM4040D30IDBZR?","answer":"Both are 3V shunt references in SOT-23-3 with the same electrical specifications (tolerance, noise, tempco, output current). The suffix difference (Q vs I) may indicate a different temperature range or qualification level — the LM4040D30QDBZRG4 is rated -40°C to 125°C. Confirm the operating temperature requirement of your application before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040D30QDBZRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040D30QDBZRG4 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}}