表1 本文与部分参考文献中电平转换电路的参数对比
4 结论
本文设计了一种低功耗高速率宽电平范围的电平转换单元，采用低阈值NMOS管拓宽了电压范围；采用使能控制降低了电路静态功耗；增加PMOS管改善响应速度提高转换速率。实际流片结果表明，以该电平转换单元为模块设计的四通道电平转换电路静态功耗小，在1.0~5.5 V电压范围内转换速率最高可达800 Mbps。电压转换范围和静态功耗达到了预期，转换速率略低了一点，还需要进一步优化改善。基于本文提出的电平转换单位进行电路设计，具有低功耗高速率宽电平等特点，在高速电平转换接口领域有较大的优势和应用前景。
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