STM32F217VG datasheet(125/175 Pages) STMICROELECTRONICS

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STM32F21xxx

Electrical characteristics

174

6.3.21

DAC electrical characteristics

Table 67. DAC characteristics

Symbol

Parameter

Min

Typ

Max

Unit

Comments

VDDA

Analog supply voltage

1.8

3.6

VREF+

Reference supply voltage

1.8

3.6

VREF+ ≤ VDDA

VSSA

Ground

RLOAD(1)

Resistive load with buffer ON

RO(1)

Impedance output with buffer

OFF

When the buffer is OFF, the

Minimum resistive load between

DAC_OUT and VSS to have a 1%

accuracy is 1.5 M

CLOAD(1)

Capacitive load

Maximum capacitive load at

DAC_OUT pin (when the buffer is

ON).

DAC_OUT

min(1)

Lower DAC_OUT voltage

with buffer ON

0.2

It gives the maximum output

excursion of the DAC.

It corresponds to 12-bit input code

(0x0E0) to (0xF1C) at VREF+ =

3.6 V and (0x1C7) to (0xE38) at

VREF+ = 1.8 V

DAC_OUT

max(1)

Higher DAC_OUT voltage

with buffer ON

VDDA – 0.2

DAC_OUT

min(1)

Lower DAC_OUT voltage

with buffer OFF

-0.5

It gives the maximum output

excursion of the DAC.

DAC_OUT

max(1)

Higher DAC_OUT voltage

with buffer OFF

VREF+ – 1LSB

IVREF+(3)

DAC DC VREF current

consumption in quiescent

mode (Standby mode)

170

240

µA

With no load, worst code (0x800)

at VREF+ = 3.6 V in terms of DC

consumption on the inputs

-50

With no load, worst code (0xF1C)

at VREF+ = 3.6 V in terms of DC

consumption on the inputs

IDDA(3)

DAC DC VDDA current

consumption in quiescent

mode(2)

280

380

µA

With no load, middle code (0x800)

on the inputs

475

625

µA

With no load, worst code (0xF1C)

at VREF+ = 3.6 V in terms of DC

consumption on the inputs

DNL(3)

Differential non linearity

Difference between two

consecutive code-1LSB)

±0.5

LSB

Given for the DAC in 10-bit

configuration.

±2

LSB

Given for the DAC in 12-bit

configuration.

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