怎么仿真带隙基准最低工作电压

怎么仿真带隙基准最低工作电压（VREF随VDD变化的曲线）<br /><br />我用HSPICE<br /><br />语句我是这样写的&nbsp;<br /><br />V1&nbsp;VDD&nbsp;O&nbsp;1.8<br /><br />.TEMP&nbsp;40&nbsp;<br /><br />.OP<br /><br />.DC&nbsp;V1&nbsp;0&nbsp;1.8&nbsp;0.001<br /><br />.PRINT&nbsp;DC&nbsp;V(VREF)<br /><br />.END<br /><br />可仿真根本无法进行。出现<br /><br />**warning**&nbsp;cannot&nbsp;find&nbsp;any&nbsp;usefulness&nbsp;of&nbsp;parameter&nbsp;sweeping:v1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;just&nbsp;create&nbsp;it&nbsp;anyway<br /><br />请教一下&nbsp;&nbsp;这是怎么回事啊?多谢！<br /><br />

V1&nbsp;VDD&nbsp;O&nbsp;abc<br /><br />.TEMP&nbsp;40&nbsp;<br /><br />.OP<br /><br />.DC&nbsp;abc&nbsp;0&nbsp;1.8&nbsp;0.001<br /><br />.PRINT&nbsp;DC&nbsp;V(VREF)<br /><br />.END<br />

  

招聘数字IC高级工程师
招聘, 工程师, 数字, 高级