{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM4151BRIZ-RL","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM4151BRIZ-RL","canonicalUrl":"https://icboms.com/analog-devices/ADUM4151BRIZ-RL","factsUrl":"https://icboms.com/api/mcp/products/ADUM4151BRIZ-RL","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM4151BRIZ-RL, iCoupler®, SPIsolator™ series, SPI digital isolator, 7 unidirectional channels (5/2), 34 Mbps data rate, 5000 Vrms isolation, 25 kV/µs CMTI, 3 V to 5.5 V supply, -40°C to 125°C, 20-SOIC-IC, surface mount, tape & reel.","salesMarkdown":"## SPI isolator with the channel count that matches your bus The ADUM4151BRIZ-RL is a 7-channel SPI digital isolator from Analog Devices in the iCoupler® and SPIsolator™ families. It uses magnetic coupling to provide 5000 Vrms of reinforced isolation across a 20-SOIC package. The channel configuration — 5 inputs on side 1, 2 on side 2 — is laid out for a full SPI bus plus two extra lines: clock, MOSI, MISO, chip-select, and a fifth side-1 signal (often a reset or busy line), with two side-2 inputs for interrupts or handshake signals. Data rate is 34 Mbps, enough for most SPI peripherals running at 20–30 MHz bus clocks without adding setup/hold margin problems. Propagation delay is 14 ns max, and pulse-width distortion stays under 2 ns, so the clock duty cycle doesn't degrade across the barrier. At 34 Mbps, the ADUM4151BRIZ-RL can sustain a 17 MHz SPI clock with a full-cycle data window. The 14 ns propagation delay adds about half a clock period at 34 MHz, so you'll want to check the bus timing budget if your SPI master runs above 20 MHz. The 2.5 ns rise/fall time keeps the edges clean, and the 2 ns max pulse-width distortion means the clock duty cycle won't shift by more than 4% at 34 Mbps — no risk of violating hold times on the far side. For comparison, the ADUM4150ARIZ-RL runs at 40 Mbps but has only 6 channels (4/2 split), so the 4151 trades 6 Mbps of speed for the extra side-1 input. ## 5000 Vrms and 25 kV/µs CMTI — where this part lives The 5000 Vrms isolation rating qualifies for reinforced insulation in medical (IEC 60601), industrial (IEC 61010), and grid-tie (IEC 62109) equipment. The 25 kV/µs common-mode transient immunity is the key spec for motor drives and inverters: when a 600 V IGBT switches in 50 ns, the dV/dt across the barrier can exceed 10 kV/µs, and a lower CMTI part would latch or corrupt data. If you are dual-sourcing for supply resilience, the ADUM4150ARIZ-RL is a 6-channel (4/2) variant with 40 Mbps data rate — same package, same isolation rating, same temperature range — but the channel count and speed differ, so verify the pin function assignment before substituting.","metaTitle":"ADUM4151BRIZ-RL SPI Digital Isolator, 34 Mbps, 5000 Vrms","metaDescription":"ADUM4151BRIZ-RL SPI digital isolator from ADI: 34 Mbps data rate, 5000 Vrms isolation, 7 unidirectional channels (5/2 split), -40°C to 125°C, 20-SOIC.","metaKeywords":null},"attributes":{"series":"iCoupler®, SPIsolator™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"SPI","Series":"iCoupler®, SPIsolator™","Package":"Tape & Reel (TR); Cut Tape (CT)","Data Rate":"34Mbps","Technology":"Magnetic Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"20-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Number of Channels":"7","Voltage - Isolation":"5000Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"5/2","Rise / Fall Time (Typ)":"2.5ns, 2.5ns","Supplier Device Package":"20-SOIC-IC","Pulse Width Distortion (Max)":"2ns","Propagation Delay tpLH / tpHL (Max)":"14ns, 14ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.96","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.96000","currency":"USD"},{"qty":10,"price":"$10.99400","currency":"USD"},{"qty":25,"price":"$10.53840","currency":"USD"},{"qty":100,"price":"$9.28510","currency":"USD"},{"qty":250,"price":"$8.82944","currency":"USD"},{"qty":500,"price":"$8.25978","currency":"USD"},{"qty":1000,"price":"$7.57621","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a55c937bc5458f764f6f96b98b25c0cd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for ADUM4151BRIZ-RL?","answer":"It has 6 channels (4/2 split) and a 40 Mbps data rate, versus 7 channels (5/2 split) and 34 Mbps on the 4151. The channel count and pin mapping differ, so a board respin is needed for substitution."},{"question":"Will ADUM4151BRIZ-RL drop into a panel originally built with ADUM4150ARIZ-RL?","answer":"No — the ADUM4151BRIZ-RL has 7 channels (5/2 split) while the ADUM4150ARIZ-RL has 6 channels (4/2 split). The pin assignments differ, so a direct drop-in without rewiring or a PCB change is not possible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM4151BRIZ-RL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM4151BRIZ-RL 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}}