{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"INA2181A1IDGSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"INA2181A1IDGSR","canonicalUrl":"https://icboms.com/texas-instruments/INA2181A1IDGSR","factsUrl":"https://icboms.com/api/mcp/products/INA2181A1IDGSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments INA2181A1IDGSR, dual current-sense amplifier, 350 kHz bandwidth, 2 V/µs slew rate, rail-to-rail output, 2.7 V to 5.5 V supply, -40°C to 125°C, 10-VSSOP package.","salesMarkdown":"## Dual current-sense amplifier for bidirectional monitoring It measures current through an external shunt resistor and outputs a voltage proportional to the sensed current, with rail-to-rail output swing. The two independent channels let you monitor two separate current paths — for example, a motor winding and a supply rail — with a single IC, saving board area versus two single amplifiers. The 350 kHz -3 dB bandwidth covers the switching frequencies of most DC-DC converters and motor drives, letting you capture average current and ripple content without aliasing. The 2 V/µs slew rate is adequate for tracking load transients in the tens of microseconds range — fast enough for overcurrent detection loops but not for high-speed RF envelope tracking. The 356 µA supply current per amplifier keeps the thermal budget low in dense boards. ## Package and footprint Housed in a 10-VSSOP — the MSOP-10 body is 3.00 mm wide, surface-mount. The small footprint suits space-constrained designs like battery packs, LED drivers, and compact motor controllers. The input bias current is 75 µA, typical for a bipolar-input current-sense amplifier; this flows through the shunt and adds a small offset error that should be accounted for in high-side sensing with large shunt values.","metaTitle":"INA2181A1IDGSR Dual Current-Sense Amplifier, 350 kHz","metaDescription":"TI INA2181A1IDGSR dual current-sense amplifier, 350 kHz bandwidth, 2 V/µs slew rate, rail-to-rail output, 2.7 V to 5.5 V supply, -40°C to 125°C. Active, ROHS3.","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":"350 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":"$1.35","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.35000","currency":"USD"},{"qty":10,"price":"$1.18700","currency":"USD"},{"qty":25,"price":"$1.11400","currency":"USD"},{"qty":100,"price":"$0.90910","currency":"USD"},{"qty":250,"price":"$0.84444","currency":"USD"},{"qty":500,"price":"$0.71868","currency":"USD"},{"qty":1000,"price":"$0.57495","currency":"USD"},{"qty":2500,"price":"$0.52104","currency":"USD"},{"qty":5000,"price":"$0.50850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b3a65d079367725c9f2893002c080cf4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the INA2181A1IDGSR?","answer":"It is a dual-channel current-sense amplifier from Texas Instruments. It measures current through an external shunt and outputs a rail-to-rail voltage proportional to the sensed current, with 350 kHz bandwidth, 2 V/µs slew rate, and 100 µV input offset."},{"question":"What are the alternatives to the INA2181A1IDGSR?","answer":"If you need a single-channel version with zero-drift architecture, the INA254A1IPWAR is a functional alternative — same 350 kHz bandwidth, 2.4 V/µs slew rate, and 2.7 V supply, but single-channel and with a 100 µA input bias. For a four-channel option, the INA4290A2IRGVR offers 1.1 MHz bandwidth and 2 V/µs slew rate in a 4-channel package. Neither is pin-compatible — the INA2181A1IDGSR is a dual in 10-VSSOP."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/INA2181A1IDGSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/INA2181A1IDGSR 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}}