Question: A certain DAC has the following specifications: eight-bit resolution, full scale = 2.55 V, offset 2 mV; accuracy = 0.1% F.S. A static test

A certain DAC has the following specifications: eight-bit resolution, full scale = 2.55 V, offset ≤ 2 mV; accuracy = ±0.1% F.S. A static test on this DAC produces the results shown in Table 11-11. What is the probable cause of the malfunction?

Table 11-11

Input Code 00000000 00000001 00000010 00000100 00001111 10000000 Output 8 mV 18.2 mV 28.5 mV 48.3 mV 158.3 mV

Input Code 00000000 00000001 00000010 00000100 00001111 10000000 Output 8 mV 18.2 mV 28.5 mV 48.3 mV 158.3 mV 1.289 V

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