{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"INA4181A2IPWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"INA4181A2IPWR","canonicalUrl":"https://icboms.com/texas-instruments/INA4181A2IPWR","factsUrl":"https://icboms.com/api/mcp/products/INA4181A2IPWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments INA4181A2IPWR current sense amplifier, quad-circuit, 210 kHz -3dB bandwidth, 2 V/µs slew rate, rail-to-rail output, 20-TSSOP package, Tape & Reel.","salesMarkdown":"## Quad current-sense amp for multi-rail monitoring The INA4181A2IPWR: With a -3 dB bandwidth of 210 kHz and a 2 V/µs slew rate, the part is sized for DC and low-frequency current sensing — adequate for load-current telemetry in motor drives, battery-management systems, and power-distribution boards, but not for high-speed transient capture above a few hundred kilohertz. ## Supply range, temperature grade, and package Operates from a single 2.7 V to 5.5 V supply, drawing 690 µA typical per amplifier — the quad draws about 2.76 mA total, which keeps the thermal budget low in a 20-TSSOP package. The -40°C to 125°C industrial temperature range covers under-hood automotive and factory-floor enclosures without active cooling. Housed in a 20-TSSOP (4.40 mm width) with a standard surface-mount footprint. The Tape & Reel packaging (also available as Cut Tape) is moisture-sensitive — store the reels dry per the MSL label on the reel, and bake before reflow if the floor life is exceeded. ## Compliance and lifecycle planning Input offset voltage is 100 µV typical, and input bias current is 75 µA — the bias is high because the inputs are designed for shunt voltages, not high-impedance sources. For a 10 mΩ shunt at 1 A full-scale, the 75 µA bias introduces less than 0.75 µV of additional error, negligible in practice.","metaTitle":"INA4181A2IPWR Texas Instruments Current Sense Amp, 210 kHz","metaDescription":"Active quad current-sense amplifier, 210 kHz bandwidth, 2.7-5.5 V supply, -40°C to 125°C. ROHS3. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"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":"20-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"690µA","Number of Circuits":"4","Current - Input Bias":"75 µA","Operating Temperature":"-40°C ~ 125°C (TA)","Voltage - Input Offset":"100 µV","Supplier Device Package":"20-TSSOP","Voltage - Supply Span (Max)":"5.5 V","Voltage - Supply Span (Min)":"2.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.37","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.37000","currency":"USD"},{"qty":10,"price":"$1.22600","currency":"USD"},{"qty":25,"price":"$1.16360","currency":"USD"},{"qty":100,"price":"$0.95570","currency":"USD"},{"qty":250,"price":"$0.89336","currency":"USD"},{"qty":500,"price":"$0.78948","currency":"USD"},{"qty":1000,"price":"$0.62328","currency":"USD"},{"qty":2000,"price":"$0.58800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/778cc7601ea3bd22cd830952844d2c51.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to INA4181A2IPWR?","answer":"The INA4290A2IRGVR is a quad current-sense amplifier in the same 20-TSSOP package, but with a 1.1 MHz bandwidth versus 210 kHz. Both are from Texas Instruments and share the same supply range and temperature grade, so the INA4290A2IRGVR is a drop-in replacement for higher-bandwidth applications."},{"question":"What compliance documentation does Texas Instruments provide for INA4181A2IPWR?","answer":"The INA4181A2IPWR is ROHS3 compliant. Texas Instruments provides a datasheet, application notes, and a PCN/EOL notification service through their website."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/INA4181A2IPWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/INA4181A2IPWR 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}}