A　voltage　reference　is　indispensable　in　Integrated　Circuits.　To　improve　the　limited　linear　output　voltage　range　and　energy　efficiency　of　a　voltage　reference,　we　innovatively　propose　a　switched-capacitor-based　programmable　voltage　reference　scheme　employing　inverter-based　OTAs　to　reduce　the　power　consumption,　simultaneously　using　a　novel　Correlated　Level　Shifting　(CLS)　technique　(without　active　overhead)　to　enhance　the　OTA＇s　DC　gain　and　integral　gain.　Experimented　with　SMIC　180　nm　CMOS　technology,　a　scheme-based　voltage　reference　realizes　a　programable　output　voltage　range　from　266　to　995　mV　at　-30　to　120　degrees　C,　and　the　corresponding　temperature　coefficient　(TC)　ranges　from　82.4　to　99.5　ppm/degrees　C.　The　power　consumption　is　976　nW.　Furthermore,　comparative　experiments　and　evaluations　with　other　schemes　have　unequivocally　verified　the　superiority　of　our　proposed　scheme,　characterized　by　its　high　energy　efficiency　and　wide　output　voltage　range.　The　scheme　can　be　suitably　deployed　in　a　multitude　of　novel　edge-data　processing　systems.