STM32F303VC datasheet(111/148 Pages) STMICROELECTRONICS

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STM32F303xB STM32F303xC

Electrical characteristics

124

SINAD

(5)

Signal-to-

noise and

distortion

ratio

ADC clock freq.

≤ 72 MHz,

Sampling freq.

≤ 5 Msps,

2 V

≤ VDDA, VREF+ ≤ 3.6 V

100-pin package

Single

Ended

Fast channel 5.1 Ms

Slow channel 4.8 Ms

Differential

Fast channel 5.1 Ms

Slow channel 4.8 Ms

SNR(5)

Signal-to-

noise ratio

Single

Ended

Fast channel 5.1 Ms

Slow channel 4.8 Ms

Differential

Fast channel 5.1 Ms

Slow channel 4.8 Ms

THD(5)

Total

harmonic

distortion

Single

Ended

Fast channel 5.1 Ms

-74

Slow channel 4.8 Ms

-74

Differential

Fast channel 5.1 Ms

-78

Slow channel 4.8 Ms

-76

1. ADC DC accuracy values are measured after internal calibration.

2. ADC accuracy vs. negative Injection Current: Injecting negative current on any analog input pins should be avoided as this

significantly reduces the accuracy of the conversion being performed on another analog input. It is recommended to add a

Schottky diode (pin to ground) to analog pins which may potentially inject negative current.

Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) in Section 6.3.14 does not affect the ADC

accuracy.

3. Better performance may be achieved in restricted VDDA, frequency and temperature ranges.

4. Guaranteed by characterization results.

5. Value measured with a -0.5 dB full scale 50 kHz sine wave input signal.

Table 71. ADC accuracy, 100-pin packages(1)(2)(3) (continued)

Symbol Parameter

Conditions

Min (4) Max(4) Unit

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