{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040EIZ-2.0/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040EIZ-2.0-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4040EIZ-2.0-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4040EIZ-2.0%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040EIZ-2.0/NOPB, precision shunt voltage reference, fixed 2.048 V output, ±2% tolerance, 15 mA output current, 70 µA cathode current, TO-92-3 through-hole package, -40°C to 85°C operating temperature.","salesMarkdown":"## A 2.048 V shunt reference in a TO-92-3 — what the TO-92 means for the board The Texas Instruments LM4040EIZ-2.0/NOPB is a precision shunt voltage reference with a fixed 2.048 V output, ±2% initial tolerance, and a 15 mA output current capability. The shunt topology means it sinks current from the supply through an external resistor; the cathode current floor is 70 µA, so the resistor must be sized to deliver at least that much at the minimum supply voltage. The TO-92-3 through-hole package is the legacy form factor — it stands off the board and is hand-solder or wave-solder only. No MSL rating applies because the package is not moisture-sensitive, but the leads need a clean solder joint to avoid intermittent contact in high-vibration environments. ## Tolerance and temperature drift — the ±2 % and 150 ppm/°C reality The ±2 % tolerance on the 2.048 V output means the reference voltage can sit anywhere from 2.007 V to 2.089 V at 25 °C. That is acceptable for an 8-bit ADC reference with a 5 V span, but marginal for a 12-bit system that expects better than 1 LSB at 2.048 V.","metaTitle":"TI LM4040EIZ-2.0/NOPB Shunt Voltage Reference","metaDescription":"Texas Instruments LM4040EIZ-2.0/NOPB precision shunt reference, 2.048V fixed output, ±2% tolerance, 15 mA output, 70 µA cathode current, TO-92-3 through-hole","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Bulk","Tolerance":"±2%","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA)","Product Status":"Obsolete","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"70 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"35µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"TO-92-3","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/LM4040EIZ-2.0%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Is LM4040EIZ-2.0/NOPB obsolete?","answer":"Yes, the LM4040EIZ-2.0/NOPB carries an obsolete lifecycle status. It is no longer manufactured by Texas Instruments."},{"question":"What is the replacement for LM4040EIZ-2.0/NOPB?","answer":"No official successor is listed on the record for this exact order code. The LM4040 family includes active SOT-23 and SC-70 variants with the same 2.048 V output and ±2% tolerance, but in surface-mount packages. If the design can accommodate a different package, those are a practical alternative. If the through-hole TO-92-3 is mandatory, the only option is surplus sourcing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040EIZ-2.0-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040EIZ-2.0-NOPB 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}}