{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040D41IDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040D41IDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040D41IDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/LM4040D41IDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040D41IDBZTG4, precision shunt voltage reference, fixed 4.096 V output, ±1% tolerance, 15 mA output current, 88 µA cathode current, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## 4.096 V fixed shunt — the ADC reference anchor That voltage is a natural fit for single-supply 12-bit and 16-bit ADCs where the reference input spans 0 V to 4.096 V — every LSB corresponds to exactly 1 mV (12-bit) or 62.5 µV (16-bit), simplifying the conversion math in firmware. ## ±1% tolerance — where it lands on the accuracy budget The ±1% initial tolerance means the actual output at 25 °C sits between 4.055 V and 4.137 V. For a 12-bit ADC with a 4.096 V reference, that tolerance contributes roughly ±10 LSB of gain error before any temperature drift is factored in. If the system needs better than 0.5% accuracy without trimming, step up to the ±0.1% or ±0.2% grade in the same LM4040 family. ## 15 mA output — enough for multiple loads The shunt can source or sink up to 15 mA while regulating. That covers biasing the reference input of two or three ADC channels plus a feedback divider on a switching regulator, all from one device. The minimum cathode current is 88 µA — below that the shunt drops out of regulation, so the series resistor must be sized to keep at least 88 µA flowing at the minimum input voltage.","metaTitle":"TI LM4040D41IDBZTG4 Shunt Voltage Reference, 4.096 V, ±1%","metaDescription":"Texas Instruments LM4040D41IDBZTG4 precision shunt reference, fixed 4.096 V output, ±1% tolerance, 15 mA output, 88 µA cathode current, SOT-23-3, active","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":"±1%","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":"88 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":"150ppm/°C","Voltage - Output (Min/Fixed)":"4.096V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$40.6642","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040D41IDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040D41IDBZTG4?","answer":"The initial tolerance is ±1% at 25 °C. For tighter accuracy, the LM4040 family includes ±0.1% and ±0.2% grades with the same pinout and package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040D41IDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040D41IDBZTG4 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}}