AH8501 datasheet(14/19 Pages) DIODES

14 / 19 page

AH8501

Document number: DS37512 Rev. 1 - 2

14 of 19

www.diodes.com

February 2015

AH8501

Typical Operating Characteristics (cont.)

Typical Null Voltage: Output Voltage at B = 0+ Gauss (Note 16)

Note:

16. Null voltage is the voltage with magnetic flux density B = 0G at the sensor. B = 0G is also the transistion point at VDD*127/128 for internal ADC and

DAC. To avoid the transition point fluctuation during measurement of null voltage, B = 0+ Gauss (e.g. 0.5G which is smaller than the 1LSB gauss step

of 3.125G) is used. See definition of the null voltage in application section.

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

1.4

1.6

1.8

2.2

2.4

2.6

2.8

3.2

3.4

3.6

3.8

Supply Voltage (V)

Null Voltage vs Supply Voltage

B = 0+ Gauss, TA = +25 °C

0.3

0.5

0.7

0.9

1.1

1.3

1.5

1.7

1.9

2.1

-50

-40

-30

-20

-10

Temperature (oC)

Null Voltage vs Temperature

1.6V

1.8V

2.5V

3.0V

3.3V

3.6V

B = 0+ Gauss

0.880

0.885

0.890

0.895

0.900

0.905

0.910

0.915

0.920

-50

-40

-30

-20

-10

Temperature (oC)

Null Voltage vs Temperature

1.8V

B = 0+ Gauss, VDD = 1.8V

1.45

1.46

1.47

1.48

1.49

1.50

1.51

1.52

1.53

1.54

-50

-40

-30

-20

-10

Temperature (oC)

Null Voltage vs Temperature

3.0V

B = 0+ Gauss, VDD = 3.0V

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