AD740x Sigma Delta模数转换器，能够替代尺寸更大、更昂贵的传感器模块，从而降低系统成本，改进隔离电流测量水平。
AD7401： http://www.analog.com/cn/products/analog-to-digital-converters/ad7401.html
AD7402： http://www.analog.com/cn/products/analog-to-digital-converters/precision...
AD7403： http://www.analog.com/cn/products/interface-isolation/isolation/isolated...
AD7405： http://www.analog.com/cn/products/analog-to-digital-converters/precision...
