This note explains how to build an isolated USB hub using the ADuM4160 isolator and a USB2512 hub controller, with circuit details, test references and…
The document describes an isolated USB hub circuit that uses the ADuM4160 full‑speed/low‑speed USB isolator together with a USB2512 dual‑port hub controller. It explains the functional advantages, power configuration, and isolation requirements for industrial and medical applications.
Additional sections cover test reference files, common design variations, further reading, evaluation‑board photos, and links to related datasheets for the ADuM4160, ADP3339, and ADP3330 components. This manual is written in Chinese.
| Supported USB speed | Full‑speed (12 Mbps) and low‑speed (1.5 Mbps) |
|---|---|
| Isolation voltage rating | Up to 5 kV transient voltage |
| Downstream channel power | 2.5 W per channel |
| High‑speed support | Not supported |
| Hub controller used | SMSC USB2512 |
It supports full‑speed (12 Mbps) and low‑speed (1.5 Mbps) operation, but does not support high‑speed USB.
The design can tolerate up to 5 kV of transient voltage across the isolation barrier.
Each downstream channel can supply up to 2.5 W of power.
The example uses the SMSC USB2512 dual‑port hub controller.