OP177GS by Analog Devices(ADI) Design and production,in Shenzhen Jungu Technology Electronics Co., Ltd. Spot sales,And can pass Shenzhen Jungu Technology Electronics Co., Ltd. Purchasing。OP177GS Price reference $ 3.971200。OP177GS - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information OP177GS Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial