STEVAL-ISQ014V1 Schematic diagram Rf2 47k In Vccp C1 Vccp Rg2 100 22nF Out 3 V+ 4 Rg1 100 TSZ121ILT 1 V- 2 Rsh 30m GND Vccn 6 Vcc Rf1 47k Cf 33nF Vccn Vout