STM32F358XC datasheet(109/134 Pages) STMICROELECTRONICS

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STM32F358xC

Electrical characteristics

118

SINAD

Signal-to-

noise and

distortion

ratio

ADC clock freq.

≤ 72 MHz,

Sampling freq.

≤ 5 Msps,

1.8V

≤ VDDA, VREF+ ≤ 3.6 V

64-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

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

Total

harmonic

distortion

Single Ended

Fast channel 5.1 Ms

-75

Slow channel 4.8 Ms

-75

Differential

Fast channel 5.1 Ms

-79

Slow channel 4.8 Ms

-78

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 6.3.13 does not affect the ADC

accuracy.

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

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

Table 69. ADC accuracy, 64-pin packages(1)(2)(3) (continued)

Symbol Parameter

Conditions

Min(4) Max(4) Unit

Table 70. ADC accuracy at 1MSPS(1)(2)

Symbol

Parameter

Conditions

Typ

Max(3) Unit

Total unadjusted error

ADC clock freq.

≤ 72 MHz,

Sampling freq.

≤ 1 Msps

2.4V

≤ VDDA , VREF+ ≤ 3.6 V

single-ended mode

Fast channel

±2.5

±5

LSB

Slow channel

±3.5

±5

Offset error

Fast channel

±1

±2.5

Slow channel

±1.5

±2.5

Gain error

Fast channel

±2

±3

Slow channel

±3

±4

Differential linearity error

Fast channel

±0.7

±2

Slow channel

±0.7

±2

Integral linearity error

Fast channel

±1

±3

Slow channel

±1.2

±3

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 6.3.13 does not affect the ADC

accuracy.

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

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