{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040A20IDBZRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040A20IDBZRG4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040A20IDBZRG4","factsUrl":"https://icboms.com/api/mcp/products/LM4040A20IDBZRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040A20IDBZRG4, precision shunt voltage reference, fixed 2.048 V output, ±0.1% tolerance, 35 µVrms noise, SOT-23-3 package, Tape & Reel.","salesMarkdown":"## 2.048 V shunt reference with ±0.1% tolerance The Texas Instruments LM4040A20IDBZRG4 is a precision shunt voltage reference that delivers a fixed 2.048 V output with ±0.1% initial tolerance — tight enough to serve as the reference for a 12-bit ADC without external trimming. Wideband noise is specified at 35 µVrms over 10 Hz to 10 kHz, which keeps the reference contribution well below the LSB of a 12-bit system sampling at moderate rates. The shunt architecture allows the reference to operate from a current source or a resistor from the supply rail, sinking up to 15 mA and requiring a minimum cathode current of 80 µA to maintain regulation. ## SOT-23-3 footprint and temperature range Housed in a SOT-23-3 package (also listed as TO-236-3 / SC-59), the part fits a standard three-pin footprint with 0.95 mm pitch — board space is minimal, and the package is widely second-sourced across the industry. Standard lead times apply through the independent distribution channel. Because the LM4040 series is a mature, multi-sourced family, pin-compatible alternatives from other manufacturers exist — but the TI part is the original reference designator for many precision analog chains.","metaTitle":"LM4040A20IDBZRG4 Shunt Reference, 2.048 V ±0.1%, SOT-23-3","metaDescription":"Texas Instruments LM4040A20IDBZRG4 precision shunt voltage reference, fixed 2.048 V output, ±0.1% tolerance, 35 µVrms noise, 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/LM4040A20IDBZRG4/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040A20IDBZRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040A20IDBZRG4 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}}