{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF5040AIDGKT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"REF5040AIDGKT","canonicalUrl":"https://icboms.com/texas-instruments/REF5040AIDGKT","factsUrl":"https://icboms.com/api/mcp/products/REF5040AIDGKT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments REF5040AIDGKT, Series Voltage Reference, Fixed 4.096V Output, ±0.1% Tolerance, 3µVp-p Noise, 8ppm/°C, 10mA Output, 8-VSSOP Package, -40°C to 125°C.","salesMarkdown":"## 4.096 V ±0.1% — the precision anchor for ADC and DAC rails The Texas Instruments REF5040AIDGKT is a precision series voltage reference that outputs a fixed 4.096 V with an initial accuracy of ±0.1%. This output voltage is a common full-scale reference for 12- to 16-bit SAR ADCs and multiplying DACs, where the 4.096 V level directly maps to a 1 mV LSB in a 12-bit system. The series topology means it needs no external resistor to set the output, and it remains stable with as little as 4.296 V on the input, making it usable from a 5 V rail with margin for regulation dropout. ## 3 µVp-p noise at 0.1–10 Hz — what it means for converter SNR In a 4.096 V reference feeding a 16-bit ADC with 65,536 codes, this noise contributes roughly 0.5 LSB of uncertainty at the converter's noise floor — a clean reference that doesn't eat into the signal chain's dynamic range. The 8 ppm/°C temperature coefficient means the output shifts about 33 µV over a 100°C swing, which is under 1 LSB at 12 bits but worth budgeting for 16-bit designs. ## 10 mA output — driving multiple converter reference inputs The reference can source up to 10 mA of output current. That's enough to drive the reference inputs of several simultaneous-sampling ADCs plus any necessary decoupling capacitors without an external buffer. Quiescent supply current is 1.2 mA typical, so the total current drawn from the input rail is dominated by the load, not the reference itself. The wide input range from 4.296 V to 18 V allows operation from 5 V, 9 V, or 12 V rails without a separate pre-regulator. ## Active production — no end-of-life risk on this BOM line For a precision reference that often gets locked into a calibrated BOM, this is the right lifecycle posture: you can qualify it for new designs and expect multi-year supply without a forced respin. ## Package and temperature grade — surface-mount fit for industrial environments Housed in an 8-VSSOP package (3.00 mm width, 0.118\" pitch), the part is a surface-mount device suited for automated assembly. The supply voltage rating (4.296 V minimum) means a 5 V rail with ±5% tolerance still keeps the reference in regulation, even during brownout conditions.","metaTitle":"REF5040AIDGKT Voltage Reference, 4.096V ±0.1%, 8-VSSOP","metaDescription":"TI REF5040AIDGKT series voltage reference: 4.096V output, ±0.1% tolerance, 3µVp-p noise, 8ppm/°C drift. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.1%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","Product Status":"Active","Reference Type":"Series","Voltage - Input":"4.296V ~ 18V","lifecycle_stage":"eol_hot","Current - Output":"10 mA","Current - Supply":"1.2mA","Base Product Number":"REF5040","Noise - 0.1Hz to 10Hz":"3µVp-p","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"8-VSSOP","Temperature Coefficient":"8ppm/°C","Voltage - Output (Min/Fixed)":"4.096V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.3800","priceTiers":[{"qty":1,"price":"$5.38000","currency":"USD"},{"qty":10,"price":"$4.83400","currency":"USD"},{"qty":25,"price":"$4.56960","currency":"USD"},{"qty":100,"price":"$3.96040","currency":"USD"},{"qty":250,"price":"$2.81796","currency":"USD"},{"qty":500,"price":"$2.52854","currency":"USD"},{"qty":1250,"price":"$2.15550","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/REF5040AIDGKT/alternatives.json"},"ai":{"faq":[{"question":"What are alternatives or equivalent parts to REF5040AIDGKT?","answer":"A functional peer is the LM4132AMF-4.1/NOPB, which outputs 4.096 V with tighter initial tolerance (±0.05%) but higher noise (350 µVp-p) and a 20 ppm/°C temperature coefficient. The REF5040AIDGKT is the better choice for low-noise, low-drift applications; the LM4132 suits designs where initial accuracy matters more than noise. Both are series references in surface-mount packages with similar pin counts, but they are not drop-in replacements — verify the pinout and compensation requirements for your layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/REF5040AIDGKT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/REF5040AIDGKT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}