{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040C20QDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040C20QDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040C20QDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/LM4040C20QDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040C20QDBZTG4, precision shunt voltage reference, fixed 2.048 V output, ±0.5% tolerance, 35 µVrms noise, -40°C to 85°C, SOT-23-3 package, Tape & Reel.","salesMarkdown":"## Fixed 2.048 V shunt reference in SOT-23-3 The Texas Instruments LM4040C20QDBZTG4 is a precision shunt voltage reference delivering a fixed 2.048 V output with ±0.5% initial tolerance. It operates as a two-terminal shunt device, requiring only a single external resistor to set the bias current, making it a simple drop-in for precision bias or ADC reference applications. The SOT-23-3 package (TO-236-3 / SC-59 compatible) occupies minimal board area and is suited for space-constrained designs in industrial control, instrumentation, and portable equipment. ## ±0.5% tolerance and 35 µVrms noise floor Initial tolerance of ±0.5% sets the system accuracy baseline — for a 2.048 V reference, the output stays within 2.037 V to 2.059 V at 25°C. This grade suits 10- to 12-bit ADC references where the reference error is a fraction of the LSB. ## Active production, sourced to order The base product number is LM4040; the full suffix encodes the voltage option (20 = 2.048 V), tolerance grade (C = ±0.5%), and package/reel variant.","metaTitle":"Texas Instruments LM4040C20QDBZTG4 Shunt Reference","metaDescription":"Texas Instruments LM4040C20QDBZTG4 precision shunt voltage reference, fixed 2.048 V output, ±0.5% tolerance, SOT-23-3, -40°C to 85°C.","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":"80 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"35µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"2.048V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040C20QDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040C20QDBZTG4?","answer":"Initial tolerance is ±0.5%."},{"question":"Can LM4040C20QDBZTG4 replace LM4040AIM3-2.0?","answer":"Both are 2.048 V shunt references in SOT-23-3 from the same LM4040 family. The LM4040C20QDBZTG4 carries a ±0.5% tolerance grade (C), while the LM4040AIM3-2.0 is a different ordering code — confirm the tolerance grade and temperature range of your existing BOM position before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040C20QDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040C20QDBZTG4 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}}