I2C
About the article

Universal I²C Bus Isolator and Level Shifter

Simple and compact

LABSPROJECT
Based on a Labs project | January 2015 | Find it here
Universal I²C Bus Isolator and Level Shifter
When you want to connect two or more I2C devices together there may, in some cases, be the requirement to change the voltage level of the signals. And while you're at it, it may not be such a bad idea to build in galvanic isolation at the same time.
Downloading of this magazine article is reserved for registered users only.
Login | Register now!
Products
Relevant websites
Extra info / Update
Suitable for operating voltages from 3.0 to 5.5 V.
Bidirectional
2 channels
Ground and power supplies are galvanically isolated
Component list
Component List
Resistors
R1,R2,R3,R4 = 10kOhm, 0.1W, SMD0603
Capacitors
C1,C2 = 1µF 16V, tantalum, CASE A
Semiconductors
IC1 = ADUM1250ARZ, SOIC-8
Miscellaneous
K1,K2 = 4-way PCB terminal block, 3.5mm lead pitch
Loading comments...