{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040C50IDCKR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040C50IDCKR","canonicalUrl":"https://icboms.com/texas-instruments/LM4040C50IDCKR","factsUrl":"https://icboms.com/api/mcp/products/LM4040C50IDCKR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040C50IDCKR, precision shunt voltage reference, 5V fixed output, ±0.5% tolerance, 80 µVrms noise, 100 ppm/°C, -40°C to 85°C, SC-70-5.","salesMarkdown":"## 5 V shunt reference for precision bias and ADC references The Texas Instruments LM4040C50IDCKR is a precision shunt voltage reference with a fixed 5 V output, ±0.5% initial tolerance, and a low 80 µVrms noise spec over the 10 Hz to 10 kHz band. The ±0.5% initial tolerance sets the absolute accuracy floor at 25°C; for a 5 V output, that is ±25 mV maximum deviation before temperature drift. The 100 ppm/°C temperature coefficient adds about 0.5 mV per 10°C shift, so a system spanning -40°C to 85°C sees up to ±6.25 mV additional drift from the 125°C span. The 80 µVrms noise is low enough for a 12-bit ADC reference with a 5 V full-scale — the noise contribution stays well under 1 LSB. Cathode current range is 95 µA minimum to 15 mA maximum. The shunt draws just enough current to maintain regulation; the designer sets the series resistor to bias the reference within that window across the full load and supply variation. The LM4040C50IDCKR comes in a 5-lead SC-70-5 / SOT-353 package (supplier device package SC-70-5). The 0.65 mm pitch and 2.0 mm × 2.1 mm body footprint fit tightly on space-constrained analog boards.","metaTitle":"TI LM4040C50IDCKR 5V Shunt Reference, ±0.5%, SC-70-5","metaDescription":"Texas Instruments LM4040C50IDCKR precision 5V shunt voltage reference, ±0.5% tolerance, 80 µVrms noise, SC-70-5 package. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.5%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"5-TSSOP, SC-70-5, SOT-353","Product Status":"Active","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":"80µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SC-70-5","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9300","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040C50IDCKR/alternatives.json"},"ai":{"faq":[{"question":"How does LM4040C50IDCKR compare to LM4040A50IDCKR?","answer":"Both parts are 5 V shunt references in the same SC-70-5 package and share the same noise and temperature coefficient specs. The 'C' grade offers ±0.5% initial tolerance; the 'A' grade offers tighter ±0.1% tolerance. The 'C' grade is the cost-optimised choice when the system accuracy budget can absorb the wider tolerance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040C50IDCKR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040C50IDCKR 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}}