Method for symbolic simulation of circuits having non-digital node voltages
    1.
    发明授权
    Method for symbolic simulation of circuits having non-digital node voltages 有权
    具有非数字节点电压的电路的符号仿真方法

    公开(公告)号:US07818158B2

    公开(公告)日:2010-10-19

    申请号:US11233323

    申请日:2005-09-21

    IPC分类号: G06F17/50 G06G7/48

    CPC分类号: G06F17/504 G06F17/5036

    摘要: In a computer simulation of an analog device in a digital circuit, a piece-wise linear lookup table is used to determine the channel resistance of the transistors in the analog device, allowing the node voltages to take on non-digital values. The piece-wise linear lookup table contains a set of channel resistances corresponding respectively to gate-to-source voltages. The program uses multi-terminal binary decision graphs (MTBDDs) to represent non-digital resistances, capacitances and voltages in the circuit as a function of symbolic inputs. The program can analyze circuits containing more than two voltage sources by modeling voltage sources with voltage dividers between the maximum and minimum voltages in the circuit.

    摘要翻译: 在数字电路中的模拟装置的计算机模拟中,使用分段线性查找表来确定模拟装置中的晶体管的沟道电阻,允许节点电压承担非数字值。 分段线性查找表包含分别对应于栅极至源极电压的一组通道电阻。 该程序使用多端二进制决策图(MTBDD)来表示电路中的非数字电阻,电容和电压作为符号输入的函数。 该程序可以通过在电路中的最大和最小电压之间的分压器对电压源进行建模来分析包含两个以上电压源的电路。