The performance of the analog circuit is difficult to satisfy the need, such as the analog pll can't satisfy the requirement of noise restrain in digital clock extracting circuit.

模拟电路的性能难以满足需要，例如，在支路时钟恢复电路中，模拟锁相环难以满足噪声抑制要求；

youdao

The performance of the analog circuit is difficult to satisfy the need, such as the analog pll can't satisfy the requirement of noise restrain in digital clock extracting circuit.

模拟电路的性能难以满足需要，例如，在支路时钟恢复电路中，模拟锁相环难以满足噪声抑制要求；

youdao