{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1440ARQZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1440ARQZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1440ARQZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1440ARQZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM1440ARQZ iCoupler digital isolator, 4-channel unidirectional, 2 Mbps, 2500 Vrms, 2.25V–3.6V supply, -40°C to 125°C, 16-QSOP.","salesMarkdown":"The ADUM1440ARQZ is a 4-channel, unidirectional digital isolator from the iCoupler family, built around magnetic coupling technology. It's a general-purpose part sized for isolating SPI, UART, or slow-to-moderate-speed control signals where 2 Mbps is enough headroom — think PLC I/O, sensor interfaces, or isolated power-supply feedback loops. The 2500 Vrms isolation rating covers basic/reinforced isolation in industrial and medical equipment without the overhead of a 5 kV part. ## 4/0 channel direction — all inputs on one side All four channels run from Side 1 to Side 2 (inputs on Side 1, outputs on Side 2). That matters when you're isolating a unidirectional bus like a SPI master-to-slave link — you get four forward channels without wasting a channel on a reverse path. If your design needs bidirectional isolation (e.g., I²C), you'll need a part with mixed-direction channels or external direction control. The unidirectional architecture keeps propagation delay tight at 180 ns max (both tpHL and tpLH), with pulse-width distortion held to 8 ns max — clean enough for most control and data-acquisition links at 2 Mbps. ## 25 kV/µs CMTI — why it matters for motor drives and inverters Common-mode transient immunity is rated at 25 kV/µs minimum. In a motor-drive or inverter environment, fast voltage swings on the high-side ground (from IGBT switching) can couple through the isolation barrier and corrupt data. A CMTI floor of 25 kV/µs means this part holds data integrity through those transients without bit errors. Rise and fall times are 2 ns typical, which keeps edge-rate distortion low and reduces radiated emissions when the layout is tight. ## Package and footprint — 16-QSOP The ADUM1440ARQZ comes in a 16-lead QSOP (body 3.90 mm wide, 0.154\" pitch), with a surface-mount footprint that matches standard 16-pin SSOP/QSOP land patterns. No exposed pad, so thermal dissipation is through the leads — fine for the low quiescent draw of this part, but worth noting if ambient temperature pushes toward 125°C with all channels active. ## Lifecycle and compliance No AEC-Q100 qualification is listed, so for automotive-grade requirements you'd look at the ADUM1440W variant (if available) or a separate qualification lot.","metaTitle":"ADUM1440ARQZ iCoupler Digital Isolator, 2 Mbps, 2500 Vrms","metaDescription":"ADUM1440ARQZ 4-channel general-purpose digital isolator, 2 Mbps data rate, 2500 Vrms isolation, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":"iCoupler®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"General Purpose","Series":"iCoupler®","Package":"Tube","Data Rate":"2Mbps","Technology":"Magnetic Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 3.6V","Number of Channels":"4","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"4/0","Rise / Fall Time (Typ)":"2ns, 2ns","Supplier Device Package":"16-QSOP","Pulse Width Distortion (Max)":"8ns","Propagation Delay tpLH / tpHL (Max)":"180ns, 180ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.49","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.49000","currency":"USD"},{"qty":10,"price":"$5.86300","currency":"USD"},{"qty":25,"price":"$5.59040","currency":"USD"},{"qty":100,"price":"$4.85410","currency":"USD"},{"qty":250,"price":"$4.63592","currency":"USD"},{"qty":500,"price":"$4.22684","currency":"USD"},{"qty":1000,"price":"$3.68145","currency":"USD"},{"qty":2500,"price":"$3.54510","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/93aa2cbe2cc46113c0a7248fa663316e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can ADUM1440ARQZ be used with a 3.3V supply?","answer":"Yes. The supply range is 2.25V to 3.6V, so 3.3V is right in the middle. The part also runs on 2.5V rails without issue."},{"question":"What is the difference between ADuM1440 and ADuM1441?","answer":"The ADUM1440 has all four channels unidirectional from Side 1 to Side 2 (4/0 direction). The ADUM1441 has two channels forward and two reverse (2/2 direction), which is useful for isolating bidirectional buses like I²C. Both share the same 16-QSOP package, 2 Mbps data rate, and 2500 Vrms isolation."},{"question":"Is ADUM1440ARQZ RoHS compliant?","answer":"Yes, it is ROHS3 compliant, covering the current RoHS exemption categories."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1440ARQZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1440ARQZ 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}}