AN1812 datasheet(19/34 Pages) STMICROELECTRONICS

Part #	AN1812

Description	In general the ADC embedded in the ST7 microcontroller

PDF	34 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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19 / 34 page

AN1812

11 Result

19/34

Figure 14 shows the relationship between the voltage measured by the ADC Vmeasured

(Average of the 16 readings measured by the converter) and the input voltage Vin.

Figure 14. Measured vs input for positive voltages

Figure 15 shows the relationship between the error voltage (As given in column “Difference

(Vmeasured - Vin)

” in Table 1) and the input voltage Vin.

678.93

679.3

0.37

0.14

718.6

718.93

0.33

0.14

758.61

758.93

0.32

0.23

798.53

798.83

0.3

0.17

838.7

838.94

0.24

0.19

858.49

858.68

0.19

0.2

878.55

878.72

0.17

0.13

898.76

898.92

0.16

0.19

918.53

918.61

0.08

0.13

938.46

938.55

0.09

0.15

958.68

958.72

0.04

0.1

978.4

978.38

-0.02

0.14

998.63

998.56

-0.07

0.14

1018.8

1018.68

-0.12

0.18

Sl no

Vin ( Taken from Multi-

meter) (mV)

Vmeasured

(mV)

Difference

(Vmeasured - Vin)

(mV)

Error in Max and min

input measured in the

loop (mV)

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