| 摘要 |
An R-2R type DA converter where the resistance value of the weighting resistors is set to a value calculated by adding the resistance value error to twice the standard resistance value. The resistance value of the terminating resistor (third-value resistor) is set to a value wherein the resistance value error is subtracted from twice the standard resistance value. With these resistance values, when a digital data signal is incremented even if the output voltage immediately before the digital signal is incremented is larger than the output voltage immediately after the digital signal is incremented, the output voltage immediately after the digital signal is incremented will not be excessively large compared to the output voltage immediately after the digital signal is incremented. So even if the resistance value varies so that the difference in voltage between the output voltage immediately before the digital signal is incremented and the output voltage immediately after the digital signal is incremented is large, the voltage difference between the output voltage immediately before the digital signal is incremented and the output voltage immediately after the digital signal is incremented will be smaller than in the past.
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