{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040D82IDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040D82IDBZR","canonicalUrl":"https://icboms.com/texas-instruments/LM4040D82IDBZR","factsUrl":"https://icboms.com/api/mcp/products/LM4040D82IDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040D82IDBZR precision shunt voltage reference, fixed 8.192 V output, ±1% tolerance, 115 µA cathode current, SOT-23-3 package, -40°C to 85°C operation.","salesMarkdown":"## 8.192 V shunt reference — what it buys the ADC rail That output voltage is a common full-scale reference for 8-bit to 10-bit ADCs and for setting the feedback divider in a 5 V or 12 V regulator loop — 8.192 V gives a clean 8 mV per LSB at 10 bits, which simplifies the scaling math in firmware. ## ±1% tolerance and 115 µA cathode current Rated at ±1% initial tolerance, the LM4040D82IDBZR holds the output within 82 mV of 8.192 V at 25 °C. The cathode current floor is 115 µA — below that the shunt loses regulation, so the bias resistor must be sized to keep at least 115 µA through the device at minimum input voltage and maximum load current. Maximum output current is 15 mA, which covers driving the reference input of most SAR ADCs without an external buffer. ## SOT-23-3 footprint and temperature range Housed in a standard SOT-23-3 (TO-236 / SC-59 compatible) package, the LM4040D82IDBZR fits a three-pin footprint shared with many shunt references — the anode, cathode, and no-connect (NC) pins are consistent across the LM4040 family. The temperature coefficient is 150 ppm/°C, so the output drifts about 1.2 mV over the full range — acceptable for 8-bit accuracy but worth derating for a 12-bit system.","metaTitle":"TI LM4040D82IDBZR 8.192 V Shunt Reference, ±1%, SOT-23-3","metaDescription":"Texas Instruments LM4040D82IDBZR precision shunt voltage reference. Fixed 8.192 V output, ±1% tolerance, 115 µA cathode current, SOT-23-3.","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":"±1%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"115 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"130µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"150ppm/°C","Voltage - Output (Min/Fixed)":"8.192V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2920","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040D82IDBZR/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040D82IDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040D82IDBZR 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}}