AN1711 datasheet(10/40 Pages) STMICROELECTRONICS

Il numero della parte	AN1711

Spiegazioni elettronici	SOFTWARE TECHNIQUES FOR COMPENSATING ST7 ADC ERRORS

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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SOFTWARE TECHNIQUES FOR COMPENSATING ST7 ADC ERRORS

Figure 3. Hardware Setup

The following results are obtained:

VAREF, VDD= 4.950 V

Table 1. Averaging Results

Tips:

1. It is always better to take the average of 16 samples rather than to take only one conversion

result. If you take a single conversion it can be erroneous because of noise.

2. It is recommended to always keep the analog path as short as possible between the source

of the analog voltage and the ADC inputs.

Vin

Ideal

results

Maximum value

obtained

Minimum value

obtained

Average

0.5 V

103

101

102

1.0 V

206

205

1.5 V

310

309

2 V

413

415

414

2.5 V

516

3 V

620

621

620

3.5 V

723

725

724

4 V

826

831

829

830

4.5 V

930

935

934

4.95

1023

10nf

ADC

Vain

Multi-

Meter

RS232 communication

Application Board

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