{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF3140AIDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"REF3140AIDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/REF3140AIDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/REF3140AIDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments REF3140AIDBZTG4 series voltage reference, 4.096 V fixed output, ±0.2% tolerance, 20 ppm/°C drift, 10 mA output, SOT-23-3, -40°C to 125°C, Tape & Reel.","salesMarkdown":"## 4.096 V fixed reference in SOT-23-3 — what it delivers The ±0.2% initial tolerance means the output is within 8.2 mV of nominal at 25 °C without any external trim, adequate for systems targeting 12-bit accuracy (1 LSB ≈ 1 mV at 4.096 V). That keeps the reference stable enough for precision industrial control loops and sensor front-ends without needing a low-drift premium tier. The SOT-23-3 package is a three-pin footprint with a 0.95 mm pitch — compact enough for space-constrained designs, and the pinout (input, output, ground) simplifies PCB layout. ## Supply headroom and output drive A 4.096 V output from a 5 V rail leaves about 850 mV of headroom for the internal pass transistor; that's comfortable for 10 mA output current but the dropout margin shrinks if the input rail dips below 4.5 V. Quiescent supply current is 135 µA, which makes this reference suitable for battery-powered or loop-powered instruments where every microamp counts. The 10 mA output can drive the reference input of an ADC and a small resistive divider without an external buffer. ## Noise performance for precision measurement Low-frequency noise is specified at 53 µVp-p from 0.1 Hz to 10 Hz and 78 µVrms from 10 Hz to 10 kHz. For a 4.096 V reference, that's about 13 ppm p-p of 1/f noise — acceptable for 12-bit systems but may limit effective resolution in 16-bit designs without averaging or filtering.","metaTitle":"Texas Instruments REF3140AIDBZTG4 Voltage Reference, 4.096 V","metaDescription":"Texas Instruments REF3140AIDBZTG4 series voltage reference: 4.096 V fixed output, ±0.2% tolerance, 20 ppm/°C drift, SOT-23-3, -40°C to 125°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":"±0.2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Reference Type":"Series","Voltage - Input":"4.146V ~ 5.5V","lifecycle_stage":"eol_hot","Current - Output":"10 mA","Current - Supply":"135µA","Base Product Number":"REF3140","Noise - 0.1Hz to 10Hz":"53µVp-p","Noise - 10Hz to 10kHz":"78µVrms","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"20ppm/°C","Voltage - Output (Min/Fixed)":"4.096V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9700","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/REF3140AIDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"Is the REF3140AIDBZTG4 obsolete or still active?","answer":"The part is active — Texas Instruments lists it as current production with no discontinuation notice."},{"question":"What is the tolerance of the REF3140AIDBZTG4?","answer":"Initial tolerance is ±0.2%, which translates to a maximum deviation of ±8.192 mV from 4.096 V at 25 °C."},{"question":"What package does the REF3140AIDBZTG4 come in?","answer":"It is supplied in a SOT-23-3 package — three pins, surface-mount, 0.95 mm pitch, compatible with standard reflow soldering."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/REF3140AIDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/REF3140AIDBZTG4 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}}