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ES5106 Datasheet(PDF) 10 Page - Cyrustek corporation |
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ES5106 Datasheet(HTML) 10 Page - Cyrustek corporation |
10 / 20 page ES5106 3 1/2 DIGIT A/D CONVERTER W/LCD 03/05/14 10 The source current of COMMON is only 10μA, so it is easy to pull COMMON voltage to a more negative voltage with respect to the positive supply. When the total supply voltage is large enough to cause the zener to regulate(>7V), the COMMON voltage will have a low temperature cofficient typically less than 60 ppm/℃. This voltage can be used to generate the ES5106 reference voltage and an external voltage reference will be unnecessary in most cases. Reference Voltage For a 1000 counts reading, the input signal must be equal to the reference voltage. So for a 2000 counts full-scale reading, it requires the input signal be twice the reference voltage. Thus, for the 200mV and 2.000V full-scale, the reference voltage should equal 100.0mV and 1.000V, In some applications the full-scale input voltage may be other than 200mV or 2V, but 600mV, for example, The reference voltage should be set to 300 mV and the input signal can be used directly without being divided. The differential reference can be used during the measurment of resistor by the ratiometric method and when a digital reading of zero is desired for VIN≠0. A compensating offset voltage can be applied between COMMON and IN LO and the voltage of being measured is connected between COMMON and IN HI. |
Número de pieza similar - ES5106_03 |
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Descripción similar - ES5106_03 |
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