{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040B20IDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040B20IDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040B20IDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/LM4040B20IDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040B20IDBZTG4, precision shunt voltage reference, fixed 2.048V output, ±0.2% tolerance, 100ppm/°C temperature coefficient, 15 mA output, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## 2.048 V fixed output with ±0.2% initial accuracy The LM4040B20IDBZTG4 is a precision shunt voltage reference from Texas Instruments, delivering a fixed 2.048 V output with a ±0.2% initial tolerance. This places it in the B-grade precision tier of the LM4040 family — suitable for applications where the reference voltage directly sets ADC full-scale range or DAC output accuracy without external trimming. The shunt architecture means it operates like a two-terminal Zener: it sinks current from a series resistor connected to a higher supply rail. The cathode current range spans 80 µA minimum to 15 mA maximum, giving flexibility across low-power and higher-drive designs. ## Temperature drift and noise floor In a low-noise signal chain, this noise floor sits below the quantization noise of a typical 12-bit ADC at 2.048 V reference, so it does not become the dominant error source. ## SOT-23-3 package and mounting Housed in the SOT-23-3 package (also designated TO-236-3 / SC-59), this is a three-lead surface-mount device.","metaTitle":"LM4040B20IDBZTG4 Shunt Voltage Reference, 2.048V ±0.2%","metaDescription":"Texas Instruments LM4040B20IDBZTG4 precision shunt reference, 2.048V fixed output, ±0.2% tolerance, 100ppm/°C drift, SOT-23-3 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)","Tolerance":"±0.2%","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/LM4040B20IDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"Does LM4040B20IDBZTG4 have a SOT-23 package?","answer":"Yes, the supplier device package is SOT-23-3, also listed as TO-236-3 / SC-59. It is a three-lead surface-mount package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040B20IDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040B20IDBZTG4 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}}