STM32U073RCT3TR datasheet(96/146 Pages) STMICROELECTRONICS

96 / 146 page

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IDDA(DAC) DAC consumption from VDDA

DAC output buffer OFF

No load, middle code

(0x800)

µA

0.2

Sample and hold mode, CSH = 100 nF

315 ₓ Ton/

(Ton+Toff)(3)

670 ₓ

Ton/

(Ton+Toff)(3)

IDDV(DAC) DAC consumption from VREF+

DAC output buffer ON

No load, middle code

(0x800)

185

240

µA

No load, worst code

(0xF1C)

340

400

DAC output buffer OFF

No load, middle code

(0x800)

155

205

Sample and hold mode, buffer ON, CSH = 100 nF,

worst case

185 ₓ

Ton/

(Ton+Toff)(3)

400 ₓ

Ton/

(Ton+Toff)(3)

Sample and hold mode, buffer OFF, CSH = 100 nF,

worst case

155 ₓ

Ton/

(Ton+Toff)(3)

205 ₓ

Ton/

(Ton+Toff)(3)

1. In buffered mode, the output can overshoot above the final value for low input code (starting from min value).

2. Refer to Table 64. I/O static characteristics.

3. Ton is the Refresh phase duration. Toff is the Hold phase duration. Refer to RM0503 reference manual for more details.

Figure 28. 12-bit buffered / non-buffered DAC

12-bit

digital-to-analog

converter

Buffered/non-buffered DAC

DAC_OUTx

RLOAD

CLOAD

Buffer(1)

(1) The DAC integrates an output buffer that can be used to reduce the output impedance and to drive external loads

directly without the use of an external operational amplifier. The buffer can be bypassed by configuring the BOFFx bit in

the DAC_CR register.

1. The DAC integrates an output buffer that can be used to reduce the output impedance and to drive external

loads directly without the use of an external operational amplifier. The buffer can be bypassed by configuring

the BOFFx bit in the DAC_CR register.

Table 77. DAC accuracy

Specified by design, not tested in production.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

DNL

Differential non linearity(1)

DAC output buffer ON

±2

LSB

DAC output buffer OFF

±2

monotonicity

10 bits

guaranteed

INL

Integral non linearity(2)

DAC output buffer ON

CL ≤ 50 pF, RL ≥ 5 kΩ

±4

DAC output buffer OFF

CL ≤ 50 pF, no RL

±4

STM32U073x8/B/C

Electrical characteristics

DS14548 - Rev 2

page 96/146

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