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RDA5807FP Ultra-miniature radio

Overview

This radio chip uses the RDA5807FP,
requiring no programming and measuring
only 2.1cm x 2.4cm.
It is powered by a CR2032 button battery
, making it small and portable.
Originally, this chip required two volume control buttons
, but to reduce size, two 0603 packages
(controlled by shorting with a metal object) have
been added. Switches separate the entire circuit to prevent chip leakage and increase standby time.
Please feel free to ask any questions.
(Bilibili video link)

Design Files

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Update:2026-03-24 22:47:39

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