{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040C50IDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040C50IDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040C50IDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/LM4040C50IDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040C50IDBZTG4 precision shunt voltage reference, fixed 5V output, ±0.5% tolerance, 100ppm/°C drift, 15 mA output, SOT-23-3 surface-mount package, -40°C to 85°C.","salesMarkdown":"The LM4040C50IDBZTG4 is a fixed 5V shunt voltage reference from Texas Instruments' LM4040 family, trimmed to ±0.5% initial tolerance. The shunt architecture means it behaves like a Zener diode — it sinks current from a supply through a series resistor to regulate the output. For a 5V rail, the 15 mA output current ceiling sets the load the reference can drive directly; anything beyond that needs a buffer. The 95 µA cathode current is the minimum operating current — below that the reference drops out of regulation. ## Temperature drift and noise — the hidden specs that decide fit The 100 ppm/°C temperature coefficient means the output voltage shifts by up to 0.5 mV per 10°C change. In a -40°C to 85°C swing, that adds up to 12.5 mV of drift — fine for an 8-bit ADC reference, marginal for a 12-bit system without calibration. The 80 µVrms noise over 10 Hz to 10 kHz is low enough for most precision analog front-ends; if the application has a switching regulator nearby, a 0.1 µF bypass at the reference output knocks down the high-frequency hash. TI lists the LM4040C50IDBZTG4 as Active.","metaTitle":"LM4040C50IDBZTG4 Shunt Voltage Reference, 5V ±0.5%, SOT-23-3","metaDescription":"Texas Instruments LM4040C50IDBZTG4 precision shunt reference, fixed 5V output, ±0.5% tolerance, 100ppm/°C drift, SOT-23-3 package.","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)","Tolerance":"±0.5%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","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":"SOT-23-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8900","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040C50IDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"What package does LM4040C50IDBZTG4 come in?","answer":"It is supplied in a SOT-23-3 surface-mount package, shipped in Tape & Reel. The three-pin footprint is standard and matches the industry SOT-23 land pattern."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040C50IDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040C50IDBZTG4 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}}