功能应用:是美国ADI公司推出的高性能模数转换器,其优良特性使其被广泛应用于各种智能变送器中及其他工业控制场合中。 The AD421 is a complete, loop-powered, digital to 4 mA to 20 mA converter, designed to meet the needs of smart transmitter manufacturers in the Industrial Control industry. It provides a high precision, fully integrated, low cost solution in a compact 16-lead package. The AD421 is ideal for extending the resolution of smart 4 mA to 20 mA transmitters at very low cost.
