STM32H723VG datasheet(161/227 Pages) STMICROELECTRONICS

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DS13313 Rev 2

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STM32H723xE/G

Electrical characteristics

208

Note:

ADC accuracy vs. negative injection current: injecting a 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 currents.

Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) does not

affect the ADC accuracy.

Table 81. 16-bit ADC accuracy(1)(2)

Symbol

Parameter

Conditions(3)

Min

Typ

Max

Unit

Total undadjusted error

Direct

channel

Single ended

+10/–20

LSB

Differential

±15

Fast channel

Single ended

+10/–20

Differential

±15

Slow

channel

Single ended

±10

Differential

±10

Offset error

±10

Gain error

±15

Differential linearity error

Single ended

+3/–1

Differential

+4.5/–1

Integral linearity error

Direct

channel

Single ended

±11

Differential

±7

Fast channel

Single ended

±13

Differential

±7

Slow

channel

Single ended

±10

Differential

±6

ENOB

Effective number of bits

Single ended

12.2

Bits

Differential

13.2

SINAD

Signal-to-noise and

distortion ratio

Single ended

75.2

Differential

81.2

SNR

Signal-to-noise ratio

Single ended

77.0

Differential

81.0

THD

Total harmonic distortion

Single ended

Differential

1. Guaranteed by characterization results for BGA packages. The values for LQFP packages might differ.

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

3. ADC clock frequency = 25 MHz, ADC resolution = 16 bits, VDDA=VREF+=3.3 V, BOOST=11 and 16-bit mode.

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