The resolution of a DAC is the ratio of the minimum output voltage (corresponding to an input digital quantity where only the lowest valid bit is "1") to the maximum output voltage (corresponding to an input digital quantity where all valid bits are "1"). An N-bit D/A converter, for example, has a resolution of 1/(2^N-1).
In practice, the method of expressing the size of the resolution is also expressed in terms of the number of bits of the input digital quantity. The resolution is related to the output voltage. Resolution is one of the characteristic indexes of a D/A converter.
Expanded Information:
Generally, the main environmental and operating condition factors are temperature and supply voltage variations. Since the operating temperature will have an effect on the operational amplifier weighting resistor network, etc., the rated accuracy index can only be guaranteed within a certain operating range.
The operating temperature range of better D/A converters is between -40°C and 85°C, and the operating temperature range of poorer D/A converters is between 0°C and 70°C. Most of the device its static and dynamic indicators are measured at 25 ℃ operating temperature, the operating temperature of the impact of the accuracy of the indicators described by the temperature coefficient, such as the temperature coefficient of misalignment, gain temperature coefficient, differential linearity error temperature coefficient, etc..
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