Ye-Sheng Kuo, Thomas Schmid, Prabal Dutta


We endow the digital mobile phone with an analog interface that can parasitically power external peripherals and transfer data to and from them using the existing headset interface. Our design delivers several milliwatts at 3 V to a load and offers a bidirectional communications channel at a data rate of 8.8 kbaud. We demonstrate a simple oscilloscope application using this new functionality

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