ADC0838 DATASHEET PDF

Aradal When the regulator is turned on, the to Would this likely be a factor when using a simulation model? This adc is illustrated by the MUX addressing codes shown in Tables 1, 2, and 3. Micro Linear reserves the right to make changes to any product herein to improve reliability, function or design. The MLX family has improved latchup immunity. Absolute maximum ratings are stress ratings only and functional device operation is not implied.

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The voltage applied to the reference input to these converters defines the voltage span of the analog input the difference between V the possible output codes apply. The devices can be used in either ratiometric applications or in systems requiring absolute accuracy. The reference pin must be connected to a voltage source capable of driving the reference input resistance, typically 10k. This pin is the top of a resistor divider string used for the successive approximation conversion.

For absolute accuracy, where the analog input varies between specific voltage limits, the reference pin can be biased with a time and temperature stable voltage source.

The maximum value of the reference is limited to the V supply voltage. The minimum value, however, can be quire small to allow direct conversion of inputs with less than 5V of voltage span. Particular care must be taken with regard to noise pickup, circuit layout and system error voltage sources when operating with a reduced span due to the increased sensitivity of the converter.

This avoids bussing the analog inputs long distances and thus reduces noise pickup on these analog lines. However, in some cases, the analog inputs have a large common mode voltage or even some noise present along with the valid analog signal. The differential input of these converters reduces the effects of common mode input noise.

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