32G431 datasheet(137/198 Pages) STMICROELECTRONICS

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DS12589 Rev 6

137/198

STM32G431x6 STM32G431x8 STM32G431xB

Electrical characteristics

160

SINAD

Signal-to-noise

and distortion

ratio

DAC output buffer ON

CL ≤ 50 pF, RL ≥ 5 kΩ, 1 kHz

-70.4

DAC output buffer OFF

CL ≤ 50 pF, no RL, 1 kHz

-71-

ENOB

Effective

number of bits

DAC output buffer ON

CL ≤ 50 pF, RL ≥ 5 kΩ, 1 kHz

-11.4-

bits

DAC output buffer OFF

CL ≤ 50 pF, no RL, 1 kHz

-11.5-

1. Guaranteed by design.

2. Difference between two consecutive codes - 1 LSB.

3. Difference between measured value at Code i and the value at Code i on a line drawn between Code 0 and last Code 4095.

4. Difference between the value measured at Code (0x001) and the ideal value.

5. Difference between ideal slope of the transfer function and measured slope computed from code 0x000 and 0xFFF when

buffer is OFF, and from code giving 0.2 V and (VREF+ – 0.2) V when buffer is ON.

Table 69. DAC 1MSPS accuracy(1) (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Table 70. DAC 15MSPS characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Analog supply voltage for

DAC ON

1.71

3.6

VREF+

Positive reference voltage

1.71

VDDA

VREF-

Negative reference voltage

VSSA

VDAC_OUT

Voltage on DAC_OUT

output

-0

VREF+

tSETTLING

Settling time (full scale: for

a 12-bit code transition

between the lowest and the

highest input codes when

DAC_OUT reaches final

value)

VDDA>2,7V

With One comparator

on DAC output

10%-90%

5%-95%

1%-99%

32lsb

1lsb

VDDA>2,7V

With One comparator

and OPAMP on DAC

output

10%-90%

5%-95%

1%-99%

32lsb

1lsb

125

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