STM32F091CB datasheet(89/127 Pages) STMICROELECTRONICS

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STM32F091xB STM32F091xC

Electrical characteristics

6.3.17

DAC electrical specifications

Table 60. DAC characteristics

Symbol

Parameter

Min

Typ

Max

Unit

Comments

VDDA

Analog supply voltage for

DAC ON

2.4

3.6

RLOAD(1)

Resistive load with buffer

Ω Load is referred to ground

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

VDDA = 3.6 V and (0x155) and

(0xEAB) at VDDA = 2.4 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

VDDA – 1LSB

IDDA(1)

DAC DC current

consumption in quiescent

mode(2)

600

µA

With no load, middle code

(0x800) on the input

700

µA

With no load, worst code

(0xF1C) on the input

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

INL(3)

Integral non linearity

(difference between

measured value at Code i

and the value at Code i on a

line drawn between Code 0

and last Code 1023)

±1

LSB

Given for the DAC in 10-bit

configuration

±4

LSB

Given for the DAC in 12-bit

configuration

Offset(3)

Offset error

(difference between

measured value at Code

(0x800) and the ideal value

= VDDA/2)

±10

±3

LSB

Given for the DAC in 10-bit at

VDDA = 3.6 V

±12

LSB

Given for the DAC in 12-bit at

VDDA = 3.6 V

Gain error(3) Gain error

±0.5

Given for the DAC in 12-bit

configuration

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