{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040BIM3-8.2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040BIM3-8.2","canonicalUrl":"https://icboms.com/texas-instruments/LM4040BIM3-8.2","factsUrl":"https://icboms.com/api/mcp/products/LM4040BIM3-8.2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040 series precision shunt voltage reference, LM4040BIM3-8.2, fixed 8.192V output, ±0.2% tolerance, 100ppm/°C drift, 15 mA output, SOT-23-3, -40°C to 85°C.","salesMarkdown":"The Texas Instruments LM4040BIM3-8.2 is a precision shunt voltage reference that delivers a fixed 8.192V output with ±0.2% initial tolerance. The SOT-23-3 package fits into tight layouts where board space is at a premium, and the shunt topology means it only needs a single resistor to set the bias current, no external pass transistor. That means TI has flagged it for eventual discontinuation — no new production builds should start with this order code. If you're qualifying a new design, look at the active LM4040 family siblings with the same 8.192V output and ±0.2% tolerance in the SOT-23-3 package — the footprint is identical, so the board spin is zero. The 8.192V output is a common reference voltage for 12-bit and 16-bit ADCs that use a 2.048V or 4.096V internal reference multiplied up — or directly as the top of a resistor divider for a 0-10V analog input. The ±0.2% tolerance means the initial output error is at most 16.4 mV, which for a 12-bit system with a 10V span is about 0.16% of full scale — well within the LSB budget. The 15 mA output current is enough to drive the reference input of a single ADC plus a small bypass cap; if you're splitting the reference to multiple converters, you'll need a buffer. The 95 µA minimum cathode current sets the lower bound on the bias resistor — at a 12V supply, a 40 kΩ resistor gives about 100 µA, which is just above the floor and keeps the reference in regulation.","metaTitle":"LM4040BIM3-8.2 Shunt Voltage Reference, 8.192V ±0.2%","metaDescription":"Texas Instruments LM4040BIM3-8.2 precision shunt reference: 8.192V fixed output, ±0.2% tolerance, 100ppm/°C drift, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Not For New Designs","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"95 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"130µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"8.192V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8c40cf163b5cda64fd88ad5c9f25fe6d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040BIM3-8.2/alternatives.json"},"ai":{"faq":[{"question":"Is LM4040BIM3-8.2 obsolete or NRND?","answer":"It is not yet fully discontinued, but TI advises against using it in new production builds. Existing BOM lines can still be sourced through independent distribution against an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040BIM3-8.2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040BIM3-8.2 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}}