STM32F479AI datasheet(163/217 Pages) STMICROELECTRONICS

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STM32F479xx

Electrical characteristics

190

IDDA(4)

DAC DC VDDA current

consumption in quiescent

mode(3)

-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(4)

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(4)

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(4)

Offset error

(difference between

measured value at Code

(0x800) and the ideal value =

VREF+/2)

±10

mV Given for the DAC in 12-bit configuration

±3

LSB

Given for the DAC in 10-bit at VREF+ =

3.6 V

±12

LSB

Given for the DAC in 12-bit at VREF+ =

3.6 V

Gain

error(4)

Gain error

±0.5

Given for the DAC in 12-bit configuration

tSETTLING(4)

Settling time (full scale: for a

10-bit input code transition

between the lowest and the

highest input codes when

DAC_OUT reaches final

value ±4LSB

-3

µs

CLOAD ≤ 50 pF,

RLOAD ≥ 5 kΩ

THD(4)

Total Harmonic Distortion

Buffer ON

CLOAD ≤ 50 pF,

RLOAD ≥ 5 kΩ

Update

rate(2)

Max frequency for a correct

DAC_OUT change when

small variation in the input

code (from code i to i+1LSB)

MS/s

CLOAD ≤ 50 pF,

RLOAD ≥ 5 kΩ

tWAKEUP(4)

Wakeup time from off state

(Setting the ENx bit in the

DAC Control register)

-6.5

µs

CLOAD ≤ 50 pF, RLOAD ≥ 5 kΩ

input code between lowest and highest

possible ones.

PSRR+ (2)

Power supply rejection ratio

(to VDDA) (static DC

measurement)

–67

–40

dB No RLOAD, CLOAD = 50 pF

1. VDDA minimum value of 1.7 V is obtained with the use of an external power supply supervisor (refer to Section 2.19.2).

2. Guaranteed by design.

3. The quiescent mode corresponds to a state where the DAC maintains a stable output level to ensure that no dynamic

consumption occurs.

4. Guaranteed based on test during characterization.

Table 87. DAC characteristics (continued)

Symbol

Parameter

Min

Typ

Max

Unit

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