ADR421ARZ by Analog Devices Inc.(ADI) Design and production,in Shenzhen PlusLink Electronics Co., Ltd. Spot sales,And can pass Shenzhen PlusLink Electronics Co., Ltd. Purchasing。ADR421ARZ Price reference $ 6.680000。ADR421ARZ - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information ADR421ARZ Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial