{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040A20IDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040A20IDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040A20IDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/LM4040A20IDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040A20IDBZTG4, precision shunt voltage reference, 2.048 V fixed output, ±0.1% tolerance, 100 ppm/°C, 35 µVrms noise, SOT-23-3, tape and reel.","salesMarkdown":"## 2.048 V shunt reference — the precision anchor The Texas Instruments LM4040A20IDBZTG4 is a precision shunt voltage reference that delivers a fixed 2.048 V output with an initial tolerance of ±0.1% and a temperature coefficient of 100 ppm/°C. The 35 µVrms noise specification (10 Hz to 10 kHz) is low enough that this reference can feed a 16-bit SAR ADC without an external RC filter in many designs — the noise contribution stays below 1/2 LSB at 2.048 V full scale. The minimum cathode current is 80 µA, which sets the lower bound for the bias resistor: with a 5 V supply and 2.048 V reference, the series resistor must pass at least 80 µA plus the load current. The maximum output current is 15 mA, so the resistor also needs to keep the total current under that ceiling at the highest supply voltage. For a precision reference that often lands in long-life industrial or instrumentation BOMs, that means no forced redesign cycle in the near term.","metaTitle":"Texas Instruments LM4040A20IDBZTG4 Shunt Reference","metaDescription":"TI LM4040A20IDBZTG4 precision shunt voltage reference, 2.048 V fixed output, ±0.1% tolerance, 100 ppm/°C drift, 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)","Tolerance":"±0.1%","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":"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/LM4040A20IDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"Can LM4040A20IDBZTG4 replace LM4040A20IDBZT?","answer":"The two parts share the same base product number LM4040 and the same 2.048 V output and ±0.1% tolerance. The difference is the packaging format: the IDBZTG4 suffix indicates Tape & Reel, while the IDBZT suffix typically indicates a different reel quantity or tube. Electrically they are identical, so the IDBZTG4 is a drop-in replacement for the IDBZT in the same SOT-23-3 footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040A20IDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040A20IDBZTG4 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}}