{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040D82IDCKR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040D82IDCKR","canonicalUrl":"https://icboms.com/texas-instruments/LM4040D82IDCKR","factsUrl":"https://icboms.com/api/mcp/products/LM4040D82IDCKR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040D82IDCKR, precision shunt voltage reference, fixed 8.192 V output, ±1% tolerance, 150 ppm/°C temperature coefficient, 15 mA output current, SC-70-5 package, -40°C to 85°C.","salesMarkdown":"## 8.192 V shunt reference — the decision anchor The shunt topology means it behaves like a two-terminal Zener: you bias it through a series resistor from a higher-voltage rail, and the reference regulates by shunting current to ground. ## Tolerance and drift — the accuracy budget Initial output accuracy is ±1% — at 8.192 V that is ±82 mV before temperature effects. The 150 ppm/°C temperature coefficient adds another ±0.015% per °C away from 25°C. ## Output current and cathode current — biasing the shunt The reference can sink up to 15 mA of output current while maintaining regulation. Minimum cathode current is 115 µA — the series resistor must be sized so that the total current (load current plus the 115 µA minimum) keeps the device in its operating region. If the load draws less than 115 µA, the excess current flows through the shunt; if the load draws more than 15 mA, the reference drops out of regulation. This is the standard trade-off with shunt references: the series resistor value sets the quiescent power dissipation. ## Noise floor for sensitive analog rails Wideband noise is specified at 130 µVrms over the 10 Hz to 10 kHz band. For a 12-bit ADC with an 8.192 V reference, one LSB at 12 bits is 2 mV — the 130 µVrms noise contributes about 6% of one LSB, which is acceptable for most industrial and instrumentation applications. For audio or metrology-grade paths, a lower-noise reference (e.g., the LM4040A series with tighter tolerance) would be the better fit. ## Package and footprint — SC-70-5 constraints The SC-70-5 (SOT-353) package is a 5-lead surface-mount package with a 0.65 mm pitch and a body size of roughly 2.1 mm × 2.0 mm. The base product number is LM4040, covering multiple voltage options and tolerance grades across the SC-70-5 package family.","metaTitle":"TI LM4040D82IDCKR Shunt Voltage Reference, 8.192 V ±1%","metaDescription":"Texas Instruments LM4040D82IDCKR precision shunt reference, 8.192 V fixed output, ±1% tolerance, 150 ppm/°C drift, SC-70-5 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); Cut Tape (CT)","Tolerance":"±1%","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":"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":"SC-70-5","Temperature Coefficient":"150ppm/°C","Voltage - Output (Min/Fixed)":"8.192V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3212","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040D82IDCKR/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040D82IDCKR?","answer":"Initial tolerance is ±1% at 25°C."},{"question":"Can I replace LM4040D82IDCKR with LM4040A82?","answer":"The LM4040A82 is the same base product with tighter initial tolerance (±0.1%) and a lower temperature coefficient (100 ppm/°C). It is pin-compatible in the same SC-70-5 package, so it is a drop-in replacement if the application needs tighter accuracy. The D-grade (±1%, 150 ppm/°C) is the cost-optimised entry point."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040D82IDCKR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040D82IDCKR 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}}