{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1445ARQZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1445ARQZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1445ARQZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1445ARQZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM1445ARQZ, iCoupler series, General Purpose digital isolator, 4 channels, 2 Mbps data rate, 2500 Vrms isolation, 2.25 V to 3.6 V supply, -40°C to 125°C, 16-QSOP package.","salesMarkdown":"## Four-channel forward isolator for 2.5 V / 3.3 V logic domains The ADUM1445ARQZ is a four-channel, unidirectional digital isolator from Analog Devices' iCoupler series, built around magnetic coupling technology. It provides 2500 Vrms isolation between two supply domains, with all four channels oriented from Side 1 to Side 2 (4/0 input-side/side-2 ratio). Typical applications include SPI bus isolation, UART isolation, GPIO isolation in industrial sensors, PLC I/O modules, motor drives, and isolated power-supply feedback paths where the data rate stays under 2 Mbps. ## 2 Mbps data rate and 180 ns propagation delay — timing budget for isolated SPI With a maximum propagation delay of 180 ns in each direction and pulse-width distortion capped at 8 ns, the ADUM1445ARQZ can clock isolated SPI at up to roughly 2.5 MHz (half the data rate) while keeping the clock-to-data skew within a single bit period. The 2 ns typical rise/fall time preserves signal integrity on short PCB traces, but the 180 ns delay means the designer must account for round-trip latency in closed-loop control loops or acknowledge-based protocols. The 25 kV/µs common-mode transient immunity (CMTI) ensures the isolation barrier holds up in noisy environments like motor drives or inverter stages where fast switching edges couple across the barrier. ## Package, supply, and temperature grade Housed in a 16-lead QSOP (the supplier device package is 16-QSOP, the package/case is 16-SSOP with 0.154\" body width), this is a surface-mount part intended for reflow assembly. Supply voltage tolerance of 2.25 V to 3.6 V on each side means a single 3.3 V rail powers both sides, or a 2.5 V core domain can talk to a 3.3 V peripheral domain without a secondary regulator. ## Lifecycle and compliance No second-source cross-reference is documented in the manufacturer's literature, but the iCoupler family includes functionally similar parts with different channel counts or direction ratios — for example, the ADUM1441ARQZ-RL7 offers a 3/1 input-side/side-2 split for mixed-direction isolation.","metaTitle":"ADUM1445ARQZ iCoupler Digital Isolator, 2 Mbps, 2500 Vrms","metaDescription":"ADUM1445ARQZ general-purpose digital isolator from ADI's iCoupler series. 4 unidirectional channels, 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":"$6.81","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.81000","currency":"USD"},{"qty":10,"price":"$6.15300","currency":"USD"},{"qty":25,"price":"$5.86720","currency":"USD"},{"qty":100,"price":"$5.09440","currency":"USD"},{"qty":250,"price":"$4.86540","currency":"USD"},{"qty":500,"price":"$4.43610","currency":"USD"},{"qty":1000,"price":"$4.05000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/93aa2cbe2cc46113c0a7248fa663316e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the alternatives to ADUM1445ARQZ?","answer":"Within the same iCoupler family, the ADUM1445ARQZ-RL7 is the identical die in tape-and-reel packaging for automated assembly. If you need a different channel direction ratio, the ADUM1441ARQZ-RL7 provides three forward channels and one reverse channel (3/1 split) at the same 2 Mbps data rate and 2500 Vrms isolation. For a two-channel version with higher 3750 Vrms isolation, the ADUM1245ARSZ is a drop-in alternative in a smaller package."},{"question":"Can ADUM1445ARQZ be used for SPI isolation?","answer":"Yes, the ADUM1445ARQZ is suitable for isolating SPI buses where the clock rate does not exceed roughly 2.5 MHz. The 180 ns maximum propagation delay and 8 ns pulse-width distortion keep clock-to-data skew within one bit period at that speed. For higher-speed SPI (above 10 MHz), consider a faster isolator from the same iCoupler family with a higher data rate rating."},{"question":"Is ADUM1445ARQZ RoHS compliant?","answer":"Yes, the ADUM1445ARQZ is ROHS3 compliant per the manufacturer's specification, meaning it meets the current EU RoHS directive for lead-free soldering processes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1445ARQZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1445ARQZ 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}}