{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADPD4101BCBZR7","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADPD4101BCBZR7","canonicalUrl":"https://icboms.com/analog-devices/ADPD4101BCBZR7","factsUrl":"https://icboms.com/api/mcp/products/ADPD4101BCBZR7","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADPD4101BCBZR7 Front End, Optical AFE for Wearables, 10 µA supply, I²C output, 33-WLCSP, -40°C to 85°C, Active, RoHS3.","salesMarkdown":"## What this part is and where it fits The ADPD4101BCBZR7 is a fully integrated optical front end from Analog Devices, designed for wearable health and fitness monitoring. It sits between the photodiode array and the host processor, handling the LED drive, photodiode signal conditioning, and ambient light rejection in one chip. It draws just 10 µA from the supply in its lowest-power operating mode, which means a wrist-worn device measuring heart rate or SpO₂ every few seconds can run for weeks on a 100 mAh coin cell. Housed in a 33-ball WLCSP measuring 3.11 x 2.14 mm (supplier device package 33-WLCSP), this is a fine-pitch, no-lead package that requires a clean solder paste stencil and a reflow profile matched to the 0.4 mm ball pitch. The exposed die face means the optical window must be clear of underfill — plan the stencil aperture to avoid bridging under the die edge. Surface-mount only, and the WLCSP is not hand-solderable without a hot-air station and a practiced hand. ## Digital I²C output and system integration The output is pure I²C — no analog signal path to the host. That simplifies the PCB layout: a two-wire bus (SDA, SCL) plus interrupt and power. The host reads back processed photodiode data, not raw photocurrent, so the firmware does not need to handle the analog front-end timing. Input type is digital, meaning the photodiode interface is internal to the AFE. The host does not drive the LED timing directly; the ADPD4101 handles the pulse train and integrates the return signal. RoHS3 compliant, with no exemptions noted.","metaTitle":"ADPD4101BCBZR7 Optical AFE, 10 µA, WLCSP, Active","metaDescription":"Analog Devices ADPD4101BCBZR7 Front End, 10 µA supply, I²C output, -40°C to 85°C, 33-WLCSP. Active production, RoHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Front End","Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"Digital","Output Type":"I²C","Mounting Type":"Surface Mount","Package / Case":"33-UFBGA, WLCSP","lifecycle_stage":"eol_hot","Current - Supply":"10 µA","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"33-WLCSP (3.11x2.14)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$16.14000","currency":"USD"},{"qty":10,"price":"$14.83200","currency":"USD"},{"qty":25,"price":"$14.21720","currency":"USD"},{"qty":100,"price":"$12.52660","currency":"USD"},{"qty":250,"price":"$11.91176","currency":"USD"},{"qty":500,"price":"$11.14324","currency":"USD"},{"qty":1500,"price":"$10.87500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/81f74e4128e85c975fadca3ce41beee0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional alternative to ADPD4101BCBZR7?","answer":"The ADPD4001BCBZR7 is the closest peer in the same family. It adds an analog input path and SPI output alongside I²C, but shares the same WLCSP package and -40°C to 85°C range. The ADPD4101 is the digital-only, I²C-only variant — if your host only has I²C and you do not need the analog input, the ADPD4101 is the simpler BOM fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADPD4101BCBZR7","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADPD4101BCBZR7 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}}