{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040DIM3-4.1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040DIM3-4.1","canonicalUrl":"https://icboms.com/texas-instruments/LM4040DIM3-4.1","factsUrl":"https://icboms.com/api/mcp/products/LM4040DIM3-4.1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040DIM3-4.1, precision shunt voltage reference, fixed 4.096V output, ±1% tolerance, 15 mA output, 78 µA cathode current, 80 µVrms noise, 150 ppm/°C, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## ±1% at 4.096 V — the reference floor for a 12-bit ADC The LM4040DIM3-4.1 is a precision shunt voltage reference from Texas Instruments, delivering a fixed 4.096 V output with ±1% initial tolerance. This output voltage is a common full-scale reference for 12-bit ADCs and DACs operating on a 5 V rail, where each LSB represents exactly 1 mV. The shunt topology means it behaves like a two-terminal Zener — the load and bias resistor set the cathode current, which must stay between 78 µA (minimum) and 15 mA (maximum) for regulation. ## 80 µVrms noise and 150 ppm/°C drift — budget for precision Wideband noise is specified at 80 µVrms over 10 Hz to 10 kHz — about 20 LSBs on a 12-bit system at 4.096 V. That is acceptable for general-purpose data acquisition, but a lower-noise reference (e.g., 10 µVrms) would be needed for 16-bit or higher resolution. ## NRND — design it out now That means existing production can be sourced, but new BOMs should select a current-series part. For a direct ±1% replacement, the LM4040AIM3-4.1 is the closest active sibling. ## SOT-23-3 — footprint fits standard analog layouts This three-pin footprint is industry-standard for shunt references and small-signal transistors, so board layout reuse across alternate vendors is straightforward.","metaTitle":"LM4040DIM3-4.1 Shunt Voltage Reference, 4.096V ±1%, SOT-23-3","metaDescription":"LM4040DIM3-4.1 precision shunt reference, 4.096V output, ±1% tolerance, 80µVrms noise, 150ppm/°C drift. NRND status.","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":"±1%","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":"78 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"80µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"150ppm/°C","Voltage - Output (Min/Fixed)":"4.096V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8c40cf163b5cda64fd88ad5c9f25fe6d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040DIM3-4.1/alternatives.json"},"ai":{"faq":[{"question":"What is a suitable replacement for LM4040DIM3-4.1?","answer":"The LM4040AIM3-4.1 is a pin-compatible active replacement with the same 4.096 V output and SOT-23-3 package, offering tighter ±0.1% initial tolerance and lower drift. For a ±1% grade, the LM4040CIM3-4.1 is also active and directly interchangeable."},{"question":"Is LM4040DIM3-4.1 obsolete?","answer":"Existing stock can still be sourced through independent distribution, but new designs should migrate to an active LM4040 variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040DIM3-4.1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040DIM3-4.1 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}}