{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF3112AIDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"REF3112AIDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/REF3112AIDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/REF3112AIDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments REF3112AIDBZTG4, Series Voltage Reference, 1.25V Fixed Output, ±0.2% Tolerance, 20ppm/°C Drift, 17µVp-p Noise, SOT-23-3, -40°C to 125°C.","salesMarkdown":"## 1.25 V fixed reference — what the SOT-23-3 footprint buys you ## ±0.2 % initial accuracy and 20 ppm/°C drift — the system error budget Initial tolerance of ±0.2 % means the output is guaranteed within 2.5 mV of 1.25 V at 25 °C without external trim. For a 12-bit ADC with a 2.5 V reference, that error is about 2 LSB — acceptable in most industrial control loops but tight enough that a 0.1 % resistor divider after the reference would add more uncertainty than the reference itself. Temperature drift is 20 ppm/°C typical. That matters if the reference feeds a comparator threshold that must stay inside a window over temperature; for a ratiometric ADC the drift cancels if the sensor and reference share the same thermal environment. Low-frequency noise is 17 µVp-p in the 0.1 Hz to 10 Hz band, and 24 µVrms from 10 Hz to 10 kHz. For a 16-bit ADC with a 1.25 V span (19 µV per LSB), the 0.1–10 Hz noise is about 0.9 LSB p-p — the reference does not dominate the noise budget. No external output capacitor is specified for noise reduction, but a 0.1 µF ceramic at the output pin is standard practice to suppress high-frequency pickup from the supply trace. ## 10 mA output drive and 135 µA quiescent current The reference can source up to 10 mA, enough to bias a string of pull-up resistors or feed the reference input of multiple ADCs on the same rail. Quiescent supply current is 135 µA typical — low enough that the reference adds negligible overhead to a battery-powered sensor node, but not the lowest in the family (the REF33xx series draws under 5 µA).","metaTitle":"REF3112AIDBZTG4 1.25V Series Voltage Reference, ±0.2%","metaDescription":"Texas Instruments REF3112AIDBZTG4: 1.25V fixed output, ±0.2% tolerance, 20ppm/°C drift, 17µVp-p noise, -40°C to 125°C, 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":"±0.2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Reference Type":"Series","Voltage - Input":"1.8V ~ 5.5V","lifecycle_stage":"eol_hot","Current - Output":"10 mA","Current - Supply":"135µA","Base Product Number":"REF3112","Noise - 0.1Hz to 10Hz":"17µVp-p","Noise - 10Hz to 10kHz":"24µVrms","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"20ppm/°C","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.3800","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/REF3112AIDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of REF3112AIDBZTG4?","answer":"Initial tolerance is ±0.2 % at 25 °C. That translates to ±2.5 mV on the 1.25 V output."},{"question":"Can REF3112AIDBZTG4 be used at 125°C?","answer":"The 20 ppm/°C drift specification holds across that full range, and the SOT-23-3 package is rated for the junction temperature at 10 mA output."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/REF3112AIDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/REF3112AIDBZTG4 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}}