STM32F302RBT7TR 查看數據表（PDF） - STMicroelectronics

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STM32F302RBT7TR

ARM Cortex-M4F 32b MCU+FPU, up to 256KB Flash+48KB SRAM 4 ADCs, 2 DAC ch., 7 comp, 4 PGA, timers, 2.0-3.6 V operation

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Electrical characteristics

STM32F302xx/STM32F303xx

Table 68. ADC accuracy - limited test conditions (1)(2) (continued)

Symbol Parameter

Conditions

Min

(3)

Typ Max(3) Unit

Fast channel 5.1 Ms 64 67

-

Single ended

SNR

Signal-to-

noise ratio

ADC clock freq. ≤ 72

Slow channel 4.8 Ms 65 67

-

MHz

Fast channel 5.1 Ms 68 70

-

Sampling freq ≤ 5 Differential

Msps

VDDA = VREF+ = 3.3 V

dB

Slow channel 4.8 Ms 69 70

-

THD

Total

harmonic

distortion

25°C

Fast channel 5.1 Ms - −75 −72

Single ended

Slow channel 4.8 Ms - −72 −70

Fast channel 5.1 Ms - −80 −74

Differential

Slow channel 4.8 Ms - −76 −71

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. Data based on characterization results, not tested in production.

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Doc ID 023353 Rev 5

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