{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADA4661-2ARMZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADA4661-2ARMZ","canonicalUrl":"https://icboms.com/analog-devices/ADA4661-2ARMZ","factsUrl":"https://icboms.com/api/mcp/products/ADA4661-2ARMZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADA4661-2ARMZ precision CMOS operational amplifier, dual channel, 4 MHz gain bandwidth, 30 µV offset voltage, rail-to-rail output, 8-MSOP package, tube.","salesMarkdown":"## Package and integration story The ADA4661-2ARMZ comes in an 8-MSOP package (3.00 mm width), surface-mount, delivered in a tube. The MSOP-8 footprint is a common 0.65 mm pitch layout — the same as many industry-standard dual op-amps — so the board layout is straightforward if you are replacing an existing part. The tube delivery means your pick-and-place feeder setup needs to handle tube-fed parts rather than tape-and-reel; if your line is set up for tape, factor in a tube-to-tape conversion or order an alternative tape-and-reel variant if one exists. ## What the key ratings mean for your BOM The 30 µV typical input offset voltage and 0.5 pA input bias current make this a precision CMOS amplifier — the offset is low enough that most designs won't need external nulling, and the bias current is negligible even with high-impedance sources like photodiodes or pH probes. The 4 MHz gain-bandwidth product and 2.1 MHz -3 dB bandwidth set the small-signal frequency range: at a gain of 10, expect a closed-loop bandwidth around 400 kHz, which covers many sensor-conditioning and audio applications. The rail-to-rail output means the output swings within a few millivolts of the supply rails — critical in low-voltage single-supply designs (3 V minimum supply span,) where every millivolt of headroom matters. The 220 mA output current per channel is unusually high for a CMOS op-amp; it can drive headphones, multiple ADC inputs, or long cables directly without an external buffer. Supply current is 630 µA per channel — for a dual op-amp that is 1.26 mA total, low enough for battery-powered or multi-channel systems. The wide supply span from 3 V to 18 V covers both 3.3 V and 5 V logic rails as well as industrial 12 V or 15 V supplies, so the same part can be used across different board voltages without a separate regulator. The slew rate of 2 V/µs is moderate for a precision amp — it limits the full-power bandwidth to about 100 kHz at 10 V output swing. If your signal has fast edges (e.g., square waves above 100 kHz), the output will slew-limit and distort; for audio or sensor signals below that, it is fine. ## Temperature grade and deployment Rated for -40°C to 125°C, this is an industrial/automotive temperature grade. The part can sit under the hood of a vehicle, in an outdoor enclosure, or on a factory floor without derating. The 125°C upper limit means the junction temperature can reach that level under load — check the thermal resistance of the 8-MSOP package if your ambient is near 125°C and the output is driving heavy current.","metaTitle":"ADA4661-2ARMZ Analog Devices CMOS Op-Amp, 4 MHz, 8-MSOP","metaDescription":"ADA4661-2ARMZ precision CMOS op-amp, dual channel, 4 MHz GBW, 30 µV offset, rail-to-rail output, 8-MSOP. Active production, RoHS3. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Tube","Slew Rate":"2V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Surface Mount","-3db Bandwidth":"2.1 MHz","Amplifier Type":"CMOS","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"630µA (x2 Channels)","Number of Circuits":"2","Current - Input Bias":"0.5 pA","Operating Temperature":"-40°C ~ 125°C","Gain Bandwidth Product":"4 MHz","Voltage - Input Offset":"30 µV","Supplier Device Package":"8-MSOP","Current - Output / Channel":"220 mA","Voltage - Supply Span (Max)":"18 V","Voltage - Supply Span (Min)":"3 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.47","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.47000","currency":"USD"},{"qty":10,"price":"$4.01100","currency":"USD"},{"qty":25,"price":"$3.79200","currency":"USD"},{"qty":100,"price":"$3.28650","currency":"USD"},{"qty":250,"price":"$3.11800","currency":"USD"},{"qty":500,"price":"$2.79776","currency":"USD"},{"qty":1000,"price":"$2.38500","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy ADA4661-2ARMZ and how do I get a price?","answer":"The ADA4661-2ARMZ is an active part from Analog Devices, available through authorized and independent distribution. Submit an RFQ through this listing; pricing and lead time are confirmed at quote time based on your quantity and delivery requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADA4661-2ARMZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADA4661-2ARMZ 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}}