CIRCUIT BOARD WITH LOW NOISE

摘要

A circuit board includes an analog area and a digital area. The analog area includes an analog ground layer and an analog wiring layer formed on the analog ground layer. The digital area includes a digital ground layer and a digital wiring layer formed on the digital ground layer. The digital ground layer is connected with the analog ground layer to form a main ground layer. The digital wiring layer is separate from the analog wiring layer.