{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT1491AIN","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT1491AIN","canonicalUrl":"https://icboms.com/analog-devices/LT1491AIN","factsUrl":"https://icboms.com/api/mcp/products/LT1491AIN","rawCanonicalId":null},"summary":{"shortDescription":"Linear Technology LT® series, LT1491AIN, quad general-purpose op-amp, 200 kHz gain bandwidth, 0.06 V/µs slew rate, rail-to-rail output, 2 V to 44 V supply, 50 µA per channel supply current, 14-DIP through-hole package, -40°C to 85°C operating temperature.","salesMarkdown":"## Quad op-amp for industrial and battery-powered signal chains Each of the four amplifiers draws just 50 µA of supply current, making this part a strong candidate for multi-channel sensor conditioning in battery-operated instruments or loop-powered transmitters where every microamp is budgeted. The supply voltage span runs from 2 V up to 44 V, so the same device can serve a 3.3 V portable design or a 24 V industrial control board without a regulator change. ## Supply voltage flexibility — one part for 3 V and 24 V rails The 2 V minimum supply means the LT1491AIN operates from two alkaline cells or a single lithium primary cell, while the 44 V maximum lets it run directly on a nominal 24 V industrial bus with margin for transients. No separate low-voltage or high-voltage variant is needed across a mixed-rail BOM — the same quad op-amp can appear on both the 3.3 V analog front-end and the 24 V actuator driver board. ## Through-hole package — design-in considerations The 14-DIP (0.300\" row spacing) and 14-PDIP supplier package are breadboard-friendly and survive rework cycles well, but they occupy roughly four times the board area of a comparable SOIC-14. For dense mixed-signal boards, the larger footprint also means longer trace runs to the feedback network — watch for parasitic capacitance on the inverting input if the GBW is pushed near its 200 kHz limit.","metaTitle":"LT1491AIN Quad General-Purpose Op-Amp, 200 kHz","metaDescription":"LT1491AIN quad op-amp from Linear Tech: 200 kHz GBW, 50 µA/ch supply, 2 V to 44 V range, rail-to-rail output, 14-DIP. Active production.","metaKeywords":null},"attributes":{"series":"LT®","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"LT®","Package":"Bulk","Slew Rate":"0.06V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Through Hole","Amplifier Type":"General Purpose","Package / Case":"14-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Current - Supply":"50µA (x4 Channels)","Number of Circuits":"4","Current - Input Bias":"1 nA","Operating Temperature":"-40°C ~ 85°C","Gain Bandwidth Product":"200 kHz","Voltage - Input Offset":"285 µV","Supplier Device Package":"14-PDIP","Current - Output / Channel":"25 mA","Voltage - Supply Span (Max)":"44 V","Voltage - Supply Span (Min)":"2 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.0","stockQuantity":0,"priceTiers":[{"qty":38,"price":"$8.00000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2128ff8aef61795bc11d25a44f8dd946.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LT1491AIN a rail-to-rail op-amp?","answer":"Yes, the output stage is rail-to-rail, meaning the output can swing within millivolts of both supply rails. The input common-mode range, however, is not rail-to-rail — it extends from the negative rail up to about 1.1 V below the positive rail, so high-side sensing at low supply voltages needs attention."},{"question":"What is a suitable replacement or equivalent for LT1491AIN?","answer":"The AD8619WARZ-R7 is a quad CMOS rail-to-rail op-amp with a 400 kHz GBW and lower input bias (0.2 pA), but it comes in a surface-mount package only and has a 1.8 V minimum supply versus the LT1491AIN's 2 V. For a through-hole replacement, parametric equivalents are scarce; the LT1491AIN's combination of 14-DIP package, 44 V supply, and 50 µA per channel is uncommon."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT1491AIN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT1491AIN 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}}