{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040EEM3X-2.0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040EEM3X-2.0","canonicalUrl":"https://icboms.com/texas-instruments/LM4040EEM3X-2.0","factsUrl":"https://icboms.com/api/mcp/products/LM4040EEM3X-2.0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040 series precision shunt voltage reference, fixed 2.048 V output, ±2% tolerance, 15 mA output current, 73 µA cathode current, 35 µVrms noise, –40°C to 125°C, SOT-23-3 package, Tape & Reel.","salesMarkdown":"## 2.048 V shunt reference in SOT-23-3 The LM4040EEM3X-2.0 is a precision shunt voltage reference from Texas Instruments that delivers a fixed 2.048 V output with ±2% initial accuracy. It uses a shunt (two-terminal) topology, meaning it regulates by shunting current through the cathode to ground — the load and the bias resistor share the same node. The 73 µA minimum cathode current sets the lower bound for the bias resistor calculation; below that the reference drops out of regulation. Output current is rated to 15 mA. The temperature coefficient is 150 ppm/°C, which translates to roughly 0.3 mV drift over the full range — acceptable for 8-bit or low-end 12-bit references, but not a match for a 16-bit system without calibration. The SOT-23-3 package (TO-236, SC-59) is a standard three-lead footprint shared across the LM4040 family, so board layout transfers directly if you swap to a different voltage option within the series. Date-code provenance and lot traceability are verified before shipment.","metaTitle":"LM4040EEM3X-2.0 Shunt Voltage Reference, 2.048 V, ±2%","metaDescription":"LM4040EEM3X-2.0 precision shunt reference: 2.048 V fixed output, ±2% tolerance, 35 µVrms noise, –40 to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Tolerance":"±2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Obsolete","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8c40cf163b5cda64fd88ad5c9f25fe6d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040EEM3X-2.0/alternatives.json"},"ai":{"faq":[{"question":"What is a suitable replacement for LM4040EEM3X-2.0?","answer":"No official replacement is listed by the manufacturer. Within the LM4040 family, a pin-compatible option with the same 2.048 V output but a tighter tolerance (e.g., ±0.1% or ±0.5%) may be available — check the LM4040A or LM4040B series. Any replacement must match the SOT-23-3 footprint and the shunt topology; the bias resistor value may need adjustment if the minimum cathode current differs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040EEM3X-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/LM4040EEM3X-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}}