GD32H757ZMT7 datasheet(111/151 Pages) GIGADEVICE

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GD32H757xx Datasheet

110

Table 4-34. 14-bit ADC accuracy(1)(2)(3)

Symbol

Parameter

Test conditions

Typ

Max

Unit

Offset error

Single ended

±1

—

LSB

Differential

±2

—

DNL

Differential linearity

error

Single ended

-1/+2

—

Differential

-1/+2

—

INL

Integral linearity error

Single ended

±2

—

Differential

±2

—

ENOB

Effective number of bits

Single ended

12.7

—

Bits

Differential

13.3

—

SNDR

Signal-to-noise and

distortion ratio

Single ended

78.6

—

Differential

—

(1)

Guaranteed by characterization results for BGA176 packages. The values for LQFP packages might differ.

(2)

Test condition: VDD=VDDA=VREFP=3.3V,ADC_CLK=25MHz, CALMOD=1, external VREF and mode 1 or

mode 6 power supply were adopted

(3)

To obtain better ADC performance, especially when in SMPS power supply mode, please refer to the

application note AN180 User guide of 14-bit ADC in GD32H7xx Series.

4.14.

12-bit ADC characteristics

Table 4-35. 12-bit ADC characteristics

Symbol

Parameter

Conditions

Min

Typ Max Unit

VDDA(1)

Operating

voltage

—

1.71

—

3.6

VREFP(2)(3)

Positive

Reference

Voltage

VDDA ≥ VREFP

1.71

—

VDD

VREFN(2)

Negative

Reference

Voltage

—

VSSA

fADC(1)

ADC clock

1.71 V ≤ VDDA ≤ 3.6 V

2.4 V ≤ VREFP ≤ VDDA

0.1

—

MHz

1.71 V ≤ VDDA ≤ 2.4 V

1.71 V ≤ VREFP ≤ VDDA

0.1

—

MHz

fS(1)

—

Resoluti

= 12 bits

2.4 V ≤

VDDA ≤

3.6 V

2.4 V ≤

VREFP ≤

VDDA

–40 °C

≤ TJ ≤

125 °C

fADC = 80

MHz

SMP

= 2.5

—

5.3

MSPS

1.71 V ≤

VDDA ≤

2.4 V

fADC = 60

MHz

—

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