An　exponential　current　generation　circuit　for　neural　stimulators　is　presented.　Compared　to　the　conventional　exponential　current　generation　circuits,　the　proposed　circuit　features　higher　bandwidth　and　a　smaller　error　of　2.34%.　The　output　of　the　proposed　exponential　current　generation　circuit　ranges　from　1.16　to　75.36　mu　A.　This　circuit　is　designed　in　a　180-nm　CMOS　technology　under　1.8-V　supply　voltage.