| 摘要 |
The present invention provides a digital-to-analog converter which uses two separate digital-to-analog converters for the first N-bits. The N+1 bit, which is the sign bit in a sign and magnitude digital format, is used to provide the difference between the two digital-to-analog converters to the output for a first value, and to switch the DAC outputs for a second value of the sign bit. The present invention thus eliminates the parasitic capacitance of the N+1 bit by using a differential input which is switched depending on the sign bit.
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