| 摘要 |
In accordance with an illustrative embodiment of the invention, an integrated circuit includes a string of substantially similarly-shaped resistive cells forming a resistor string. Each cell has a first resistive portion (58) and a second resistive portion (60). The centerline (66, 68) of at least one cell is oriented at a non-orthogonal angle, preferably a 45 degree angle, relative to an overall orientation (64) of the resistor string. The cells of the string are contiguous such that a resistor is formed by the first resistive portion of one cell and the second resistive portion of an adjacent cell. The cells of a resistor string according to the invention can have varying shapes. Preferably, all the cells in a given resistor string have the same shape. It is preferred that this shape be hexagonal, although other shapes are possible, including trapezoidal (i.e. semi-hexagonal). Preferably, the first resistive portion of the one cell comprises substantially half of the resistor, and the second resistive portion of the adjacent cell comprises the other half of the resistor. Each cell further preferably has a tap (44) centrally positioned along one of its longer sides (40, 42) such that a resistor is formed between the taps of two adjacent cells. The taps preferably form a grid wherein each tap is aligned with at least one other tap in each of the vertical and horizontal directions. <IMAGE> |
