This　paper　presents　a　high-precision　front-end　Integrated　Circuit　(IC)　for　wide-range　dynamic　current　detection.　Traditional　current　detection　circuits　usually　employ　the　topology　with　linear　transconductance　for　current　detection,　which　is　limited　in　its　ability　to　accommodate　large　signal　variations.　We　propose　a　multi-range　detection　method　to　address　this　issue.　To　amplify　the　input　current　into　a　voltage　signal,　the　input　current　is　divided　into　multiple　ranges,　and　then　it　is　amplified　into　a　voltage　signal　using　corresponding　current-to-voltage　conversion　circuits.　The　circuit　is　designed　in　TSMC　0.18μm-CMOS　process.　The　power　supply　voltage　is　3.3　V.　The　results　show　that　the　designed　circuit　is　capable　of　detecting　current　in　a　dynamic　range　from　1nA　to　100μA,　with　a　maximum　detection　error　of　0.848%.　©　2023　IEEE.