{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"INA2181A2IDGST","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"INA2181A2IDGST","canonicalUrl":"https://icboms.com/texas-instruments/INA2181A2IDGST","factsUrl":"https://icboms.com/api/mcp/products/INA2181A2IDGST","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments INA2181A2IDGST, Current Sense Amplifier, Dual, 2V/µs Slew Rate, 210 kHz Bandwidth, Rail-to-Rail Output, 10-VSSOP, -40°C to 125°C.","salesMarkdown":"## Dual current-sense amp for rail monitoring The INA2181A2IDGST: It measures current via an external shunt resistor and outputs a voltage proportional to the sensed current, with a rail-to-rail output stage. The 210 kHz bandwidth and 2V/µs slew rate are sufficient for monitoring DC rails and moderate-speed transients in power supplies and motor drives. The extended temperature range is a hard requirement for designs that see thermal cycling or sustained high ambient temperatures — the INA2181A2IDGST meets that without a separate automotive-grade suffix. ## Input bias current — a real-world selection limit The 75 µA input bias current is unusually high compared to general-purpose op-amps. This matters because bias current flows through the shunt resistor and adds an offset error. For a 10 mΩ shunt, 75 µA produces just 0.75 µV of additional offset — negligible. But if you are using a larger shunt (say 1 Ω) to measure very low currents, that same 75 µA creates a 75 µV error term, which can dominate the measurement. Keep the shunt value low enough that the bias-current voltage drop stays under your error budget. ## Supply current and dual-channel power budget Quiescent supply current is 356 µA per device (both channels active). In a battery-powered monitor, that draw is low enough to leave on continuously, but if you are multiplexing or gating power, factor it into the sleep-mode budget. The dual-channel configuration saves board area and BOM count compared to two single-channel current-sense amps, though the per-channel supply current is the same as running two separate parts.","metaTitle":"Texas Instruments INA2181A2IDGST Current Sense Amplifier","metaDescription":"TI INA2181A2IDGST dual current-sense amplifier, 210 kHz bandwidth, 2V/µs slew rate, rail-to-rail output, -40 to 125°C, 10-VSSOP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Slew Rate":"2V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Surface Mount","-3db Bandwidth":"210 kHz","Amplifier Type":"Current Sense","Package / Case":"10-TFSOP, 10-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"356µA","Number of Circuits":"2","Current - Input Bias":"75 µA","Operating Temperature":"-40°C ~ 125°C (TA)","Voltage - Input Offset":"100 µV","Supplier Device Package":"10-VSSOP","Voltage - Supply Span (Max)":"5.5 V","Voltage - Supply Span (Min)":"2.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.46","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.46000","currency":"USD"},{"qty":10,"price":"$1.30700","currency":"USD"},{"qty":25,"price":"$1.24080","currency":"USD"},{"qty":100,"price":"$1.01910","currency":"USD"},{"qty":250,"price":"$0.95264","currency":"USD"},{"qty":500,"price":"$0.84186","currency":"USD"},{"qty":1250,"price":"$0.66462","currency":"USD"},{"qty":2500,"price":"$0.62700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b3a65d079367725c9f2893002c080cf4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can INA2181A2IDGST work with a 3.3V supply?","answer":"Yes. The rail-to-rail output swings close to both supply rails, preserving dynamic range at 3.3 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/INA2181A2IDGST","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/INA2181A2IDGST 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}}