{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040BIM3X-2.0/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040BIM3X-2.0-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4040BIM3X-2.0-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4040BIM3X-2.0%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040 series precision shunt voltage reference, fixed 2.048 V output, ±0.2% initial tolerance, 100 ppm/°C tempco, 35 µVrms noise, SOT-23-3 package, -40°C to +85°C.","salesMarkdown":"## 2.048 V shunt reference — the biasing resistor is the design decision The LM4040BIM3X-2.0/NOPB is a precision 2.048 V shunt reference from TI's LM4040 family, housed in a three-pin SOT-23-3 package. It delivers a fixed 2.048 V output with ±0.2% initial tolerance and a 100 ppm/°C temperature coefficient — tight enough to set the full-scale voltage for a 12-bit ADC without external trimming. As a shunt reference, it behaves like a precision Zener: you bias it through an external resistor from the supply rail, and the part sinks current to maintain the regulated voltage. The cathode current must stay above 65 µA to keep the output in regulation; the maximum continuous cathode current is 15 mA. ## Noise and drift — where the 35 µVrms matters The 35 µVrms noise spec is integrated from 10 Hz to 10 kHz — that's about 17 ppm rms on a 2.048 V output. For a 12-bit ADC with a 4.096 V reference span, this noise contribution sits below 0.1 LSB, so you can skip the output filter cap in most designs. The 100 ppm/°C drift adds roughly 0.2 mV over a 0–70 °C swing, which is a ~0.01% shift — fine for industrial control loops but worth budgeting if you're chasing 16-bit accuracy without calibration. ## Package and mounting — SOT-23-3 footprint The part comes in a TO-236-3 / SC-59 / SOT-23-3 package — essentially the standard three-lead SOT-23 footprint. ## Lifecycle and compliance — no end-of-life concern The base product number is LM4040, which covers a range of voltage options and tolerance grades in the same SOT-23-3 footprint.","metaTitle":"Texas Instruments LM4040BIM3X-2.0/NOPB Shunt Voltage","metaDescription":"Precision 2.048 V shunt reference in SOT-23-3. ±0.2% tolerance, 100 ppm/°C drift, 35 µVrms noise. Active production, available to order. Sourced per RFQ.","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); Cut Tape (CT)","Tolerance":"±0.2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"65 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":"$0.6060","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/db47fc1a31c797b619d88478be755429.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040BIM3X-2.0%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040BIM3X-2.0/NOPB?","answer":"The initial output voltage tolerance is ±0.2% at 25 °C. This is the 'B' grade in the LM4040 family; the 'A' grade offers ±0.1% and the standard grade is ±0.5%, all in the same SOT-23-3 footprint."},{"question":"Is LM4040BIM3X-2.0/NOPB a shunt or series reference?","answer":"It is a shunt reference — it regulates by sinking current through an external bias resistor, similar to a precision Zener diode. The cathode current must remain between 65 µA and 15 mA for proper regulation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040BIM3X-2.0-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040BIM3X-2.0-NOPB 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}}