{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF35500QDBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"REF35500QDBVR","canonicalUrl":"https://icboms.com/texas-instruments/REF35500QDBVR","factsUrl":"https://icboms.com/api/mcp/products/REF35500QDBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments REF35500QDBVR series voltage reference, 5 V fixed output, ±0.05% tolerance, 12 ppm/°C, SOT-23-6, tape and reel.","salesMarkdown":"## Precision 5 V anchor for the BOM The REF35500QDBVR: That tolerance band is tight enough to set the ADC reference without a trim pot in most 12- and 14-bit systems — the error budget stays inside the converter's INL floor. Temperature drift is spec'd at 12 ppm/°C. For a 5 V output, that's about 16.5 µV p-p of flicker noise and 3.5 µV RMS of broadband — low enough that the reference is not the dominant noise source behind a 16-bit SAR ADC with a 100 kSPS throughput. ## Input headroom and quiescent current — battery-system fit Input voltage range is 5.25 V to 6 V. That 250 mV dropout minimum means the reference needs a clean 5.25 V rail — a 5 V LDO output will not cut it unless boosted above the nominal. A 5.5 V or 6 V rail from a boost converter or a separate 6 V bias supply is the practical feed. Quiescent current is 900 nA typical. In a battery-powered sensor node that sleeps between readings, the reference's own draw is negligible compared to the MCU's deep-sleep current. The reference stays powered and settled, so the first conversion after wake-up is valid without a warm-up delay. Output current is limited to 10 mA. That is enough to bias the ADC reference input and a small resistive divider, but not to drive an external buffer or a heavy load. If the downstream circuit draws more than 10 mA from the reference pin, the output accuracy degrades — plan a separate buffer op-amp for loads above that ceiling. ## SOT-23-6 — board integration note The part comes in a 6-lead SOT-23 package (SOT-23-6) with a 0.95 mm pitch and a 2.9 mm body width. No exposed pad — thermal dissipation goes through the leads and the copper traces. A 10°C/W improvement in RθJA is achievable with a 25 mm² copper island on the top layer under the package, but the datasheet's junction-to-ambient figure assumes minimal copper. For the 10 mA max load and 900 nA quiescent, self-heating is negligible — the junction stays within a degree of ambient even at 125°C. Tape and Reel or Cut Tape packaging — the reel quantity is the standard 7-inch reel for SOT-23. ## Active lifecycle — no end-of-life signal The ±0.05% tolerance grade and the 12 ppm/°C drift place this reference in the precision band of TI's REF35xx family. No official second-source exists on this exact order code, but the LM4132AMF-4.1/NOPB is a close parametric peer: same ±0.05% tolerance, 20 ppm/°C drift, and a 4.096 V output in a SOT-23-5 package. The REF35500's 5 V output is the main difference — the LM4132's 4.096 V is a common ADC reference for 12-bit converters with a 4.096 V full-scale range. If the BOM calls for a 5 V reference, the REF35500 is the direct fit; the LM4132 is a drop-in only if the ADC reference input accepts 4.096 V.","metaTitle":"TI REF35500QDBVR Series Voltage Reference, 5V ±0.05%","metaDescription":"Texas Instruments REF35500QDBVR precision series voltage reference: 5 V fixed output, ±0.05% tolerance, 12 ppm/°C drift, 900 nA quiescent current.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.05%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SOT-23-6","Reference Type":"Series","Voltage - Input":"5.25V ~ 6V","lifecycle_stage":"eol_hot","Current - Output":"10 mA","Current - Supply":"900nA","Noise - 0.1Hz to 10Hz":"3.3ppmp-p","Noise - 10Hz to 10kHz":"0.7ppmrms","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"SOT-23-6","Temperature Coefficient":"12ppm/°C","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.06","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.06000","currency":"USD"},{"qty":10,"price":"$2.75000","currency":"USD"},{"qty":25,"price":"$2.59960","currency":"USD"},{"qty":100,"price":"$2.25300","currency":"USD"},{"qty":250,"price":"$2.13748","currency":"USD"},{"qty":500,"price":"$1.91796","currency":"USD"},{"qty":1000,"price":"$1.63500","currency":"USD"},{"qty":3000,"price":"$1.22700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6758d5ef811410dd83d0fffe3dc32cc8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for the REF35500QDBVR?","answer":"The LM4132AMF-4.1/NOPB is the closest parametric peer: same ±0.05% tolerance, 20 ppm/°C drift, series reference topology, and SOT-23 package. The key difference is output voltage — the REF35500 delivers 5 V, while the LM4132 outputs 4.096 V. If the BOM requires a 5 V reference, the REF35500 is the direct fit; the LM4132 works only if the downstream circuit accepts 4.096 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/REF35500QDBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/REF35500QDBVR 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}}