{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"OPA391DCKR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"OPA391DCKR","canonicalUrl":"https://icboms.com/texas-instruments/OPA391DCKR","factsUrl":"https://icboms.com/api/mcp/products/OPA391DCKR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments OPA391DCKR, e-trim™ series, single general-purpose op-amp in SC-70-5. 1 MHz gain bandwidth, 1 V/µs slew rate, rail-to-rail output, 15 µV input offset, 0.01 pA bias, 24 µA supply, 1.7–5.5 V supply, -40 to 125°C.","salesMarkdown":"## What the OPA391DCKR is and where it fits The Texas Instruments OPA391DCKR is a single-channel, general-purpose CMOS op-amp from the e-trim™ series, housed in a 5-pin SC-70-5 (SOT-353) package for surface-mount assembly. It delivers a 1 MHz gain-bandwidth product with a 1 V/µs slew rate, rail-to-rail output swing, and an input offset voltage trimmed to 15 µV. The part operates from a 1.7 V to 5.5 V supply span, drawing only 24 µA quiescent current. With its -40°C to 125°C temperature range, this op-amp is suited for industrial sensor interfaces, battery-powered instrumentation, and portable medical devices where low power and precision matter. ## Key ratings and what they mean for the BOM The 15 µV input offset voltage is the part's precision anchor — it eliminates the need for external nulling in dc-coupled stages, saving board space and trim components. The 0.01 pA input bias current means negligible voltage drop across high source impedances, making the OPA391DCKR a natural fit for photodiode transimpedance amplifiers or electrochemical sensor front-ends. The 24 µA supply current keeps the power budget tight in always-sensing nodes; at 1.7 V minimum supply, the part can run directly from a single lithium coin cell without a boost converter. Rail-to-rail output preserves signal swing at low supply rails, critical for single-supply ADCs with full-scale inputs. The 60 mA output current capability gives enough drive for reference buffers or small relays. ## Packaging and mounting The SC-70-5 (SOT-353) footprint is a compact 5-lead package. Surface-mount assembly fits standard reflow profiles. ## Lifecycle and sourcing The OPA391DCKR is listed as Active with no end-of-life notification. That means it remains a current-production line item for new designs. For dual-sourcing flexibility, the TLV9351IDCKR is a functional alternative in the same SC-70-5 package — it offers a wider 3.5 MHz GBW but draws 600 µA supply current, so the trade-off is bandwidth versus power. The OPA391DCKR is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time.","metaTitle":"OPA391DCKR General Purpose Op-Amp, 1 MHz, Rail-to-Rail","metaDescription":"TI OPA391DCKR single general-purpose op-amp: 1 MHz GBW, 15 µV offset, 0.01 pA bias, rail-to-rail output, 1.7–5.5 V supply, -40 to 125°C.","metaKeywords":null},"attributes":{"series":"e-trim™","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"e-trim™","Package":"Tape & Reel (TR); Cut Tape (CT)","Slew Rate":"1V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Surface Mount","Amplifier Type":"General Purpose","Package / Case":"5-TSSOP, SC-70-5, SOT-353","lifecycle_stage":"eol_hot","Current - Supply":"24µA","Number of Circuits":"1","Current - Input Bias":"0.01 pA","Operating Temperature":"-40°C ~ 125°C (TA)","Gain Bandwidth Product":"1 MHz","Voltage - Input Offset":"15 µV","Supplier Device Package":"SC-70-5","Current - Output / Channel":"60 mA","Voltage - Supply Span (Max)":"5.5 V","Voltage - Supply Span (Min)":"1.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.29","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.29000","currency":"USD"},{"qty":10,"price":"$2.05300","currency":"USD"},{"qty":25,"price":"$1.93680","currency":"USD"},{"qty":100,"price":"$1.65000","currency":"USD"},{"qty":250,"price":"$1.54936","currency":"USD"},{"qty":500,"price":"$1.35568","currency":"USD"},{"qty":1000,"price":"$1.12327","currency":"USD"},{"qty":3000,"price":"$1.04580","currency":"USD"},{"qty":6000,"price":"$1.00707","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7b53a5865b6cb664d03a350b583a372b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is OPA391DCKR rail-to-rail?","answer":"Yes, the output swings rail-to-rail. The input common-mode range also extends to the rails, making this part suitable for single-supply applications down to 1.7 V."},{"question":"What is the gain bandwidth product of OPA391DCKR?","answer":"The gain-bandwidth product is 1 MHz. For a closed-loop gain of 10, expect a usable bandwidth around 100 kHz; for unity-gain buffers, the full 1 MHz is available."},{"question":"What is the input bias current of OPA391DCKR?","answer":"The input bias current is 0.01 pA typical. This CMOS-level bias is low enough for high-impedance sources like pH probes or photodiodes without significant voltage error."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/OPA391DCKR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/OPA391DCKR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}