{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"OP491GSZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"OP491GSZ","canonicalUrl":"https://icboms.com/analog-devices/OP491GSZ","factsUrl":"https://icboms.com/api/mcp/products/OP491GSZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices OP491GSZ, quad general-purpose rail-to-rail output op-amp, 3 MHz gain bandwidth, 0.5 V/µs slew rate, 2.7 V to 12 V supply, 260 µA supply current, -40°C to 125°C, 14-SOIC package.","salesMarkdown":"## Quad op-amp for multi-channel sensor and signal conditioning The OP491GSZ: The four independent amplifiers share a common supply range from 2.7 V to 12 V. The entire quad draws 260 µA of supply current. The output current capability of 16 mA per channel is enough to drive the reference input of a successive-approximation ADC or a small-signal relay coil through a transistor buffer. For new designs, the quad-channel count and 2.7 V minimum supply make it a straightforward fit across multi-rail industrial and automotive PCBs.","metaTitle":"OP491GSZ Quad Rail-to-Rail Op-Amp, 3 MHz, 14-SOIC","metaDescription":"OP491GSZ quad general-purpose op-amp: 3 MHz GBW, 0.5 V/µs slew rate, rail-to-rail output, 260 µA supply, -40 to 125°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Slew Rate":"0.5V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Surface Mount","Amplifier Type":"General Purpose","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"260µA (x4 Channels)","Number of Circuits":"4","Current - Input Bias":"30 nA","Operating Temperature":"-40°C ~ 125°C","Gain Bandwidth Product":"3 MHz","Voltage - Input Offset":"80 µV","Supplier Device Package":"14-SOIC","Current - Output / Channel":"16 mA","Voltage - Supply Span (Max)":"12 V","Voltage - Supply Span (Min)":"2.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.26","priceTiers":[{"qty":1,"price":"$11.26000","currency":"USD"},{"qty":10,"price":"$10.35200","currency":"USD"},{"qty":25,"price":"$9.92280","currency":"USD"},{"qty":100,"price":"$8.74270","currency":"USD"},{"qty":250,"price":"$8.31360","currency":"USD"},{"qty":500,"price":"$7.77722","currency":"USD"},{"qty":1000,"price":"$7.59000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/740f2d6732f0c21156b941ecb5c447f2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/OP491GSZ/alternatives.json"},"ai":{"faq":[{"question":"What is the OP491GSZ equivalent or replacement?","answer":"The evidence does not list an official direct replacement or second-source part. The AD8629ARMZ is a zero-drift dual op-amp with lower offset (1 µV) and lower bias current (30 pA), but it is a dual, not a quad, and operates on a minimum 2.7 V supply. The AD8227BRZ is a single instrumentation amplifier with a 250 kHz bandwidth. Neither is a pin-compatible quad replacement for the OP491GSZ. For a quad-channel general-purpose alternative, compare parts with the same 14-SOIC pinout, 3 MHz GBW, and rail-to-rail output."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/OP491GSZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/OP491GSZ 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}}