{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040DEM3-2.0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040DEM3-2.0","canonicalUrl":"https://icboms.com/texas-instruments/LM4040DEM3-2.0","factsUrl":"https://icboms.com/api/mcp/products/LM4040DEM3-2.0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040DEM3-2.0, precision shunt voltage reference, fixed 2.048V output, ±1% tolerance, 35µVrms noise, 73 µA cathode current, SOT-23-3 package, -40°C to 125°C.","salesMarkdown":"The LM4040DEM3-2.0 is a fixed 2.048V shunt voltage reference from Texas Instruments in a SOT-23-3 package. It delivers a ±1% initial tolerance and 35µVrms noise over a 10Hz to 10kHz bandwidth — specs that suit it for ADC reference, comparator threshold, and sensor excitation in industrial and automotive environments. ## NRND status — plan your replacement now ## 73 µA cathode current — why it matters for always-on circuits The 73 µA cathode current is the minimum current needed to maintain regulation. In battery-powered or energy-harvesting designs, every microamp counts — this part draws less than many competing shunt references, leaving more headroom for the load. The 15 mA maximum output current sets the upper limit for driving external loads or multiple ADC inputs. That is adequate for 12-bit systems and many 10-bit applications, but for 16-bit precision across temperature you will want a tighter TC — look at the LM4040A or LM4050 series with 50 ppm/°C or better. ## Sourcing this NRND part Because the LM4040DEM3-2.0 is NRND, standard distributor stock may be limited.","metaTitle":"LM4040DEM3-2.0 Shunt Voltage Reference, 2.048V ±1%, SOT-23-3","metaDescription":"LM4040DEM3-2.0 precision shunt reference, fixed 2.048V output, ±1% tolerance, 35µVrms noise, -40°C to 125°C.","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":"73 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)":"2.048V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8c40cf163b5cda64fd88ad5c9f25fe6d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040DEM3-2.0/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM4040DEM3-2.0?","answer":"The direct pin-compatible replacement in the same SOT-23-3 footprint is the LM4040AIM3-2.0, which offers tighter ±0.1% tolerance. Other active LM4040 variants with the same 2.048V output and package are also drop-in alternatives."},{"question":"Is LM4040DEM3-2.0 equivalent to LM4040AIM3-2.0?","answer":"Functionally yes — both are 2.048V shunt references in SOT-23-3 with the same pinout. The key difference is tolerance: the DEM3 grade is ±1%, while the AIM3 grade is ±0.1%. The AIM3 also carries an active lifecycle status, making it the preferred choice for new designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040DEM3-2.0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040DEM3-2.0 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}}