AD390SD by Analog Devices Inc.(ADI) Design and production,in Shenzhen Yirenxin Technology Co., Ltd. Spot sales,And can pass Shenzhen Yirenxin Technology Co., Ltd. Purchasing。AD390SD Price reference $ 814.830000。AD390SD - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information AD390SD Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial