STM32L433CB datasheet(169/227 Pages) STMICROELECTRONICS

Part #	STM32L433CB

Description	Ultra-low-power Arm® Cortex®-M4 32-bit MCUFPU, 100DMIPS, up to 256KB flash, 64KB SRAM, USB FS, LCD, ext. SMPS

PDF	227 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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169 / 227 page

DS11449 Rev 7

169/19

STM32L433xx

Electrical characteristics

194

Figure 33. 12-bit buffered / non-buffered DAC

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.

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)

(4)

400 ₓ

Ton/(Ton

+Toff)

(4)

Sample and hold mode, buffer OFF,

CSH = 100 nF, worst case

155 ₓ

Ton/(Ton

+Toff)

(4)

205 ₓ

Ton/(Ton

+Toff)

(4)

1. Guaranteed by design.

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

3. Refer to Table 70: I/O static characteristics.

4. Ton is the Refresh phase duration. Toff is the Hold phase duration. Refer to RM0394 reference manual for more details.

Table 82. DAC characteristics(1) (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

(1)

Buffer

12-bit

digital to

analog

converter

Buffered/non-buffered DAC

DACx_OUT

RLOAD

CLOAD

ai17157d

STM32L433CB Datasheet(PDF) 169 Page - STMicroelectronics

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