STM32H7 datasheet(176/357 Pages) STMICROELECTRONICS

Part #	STM32H7

Description	32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB flash, up to 1MB RAM, 46 com. and analog interfaces

PDF	357 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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176 / 357 page

Electrical characteristics (rev Y)

STM32H742xI/G STM32H743xI/G

176/357

DS12110 Rev 10

Figure 44. 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.

6.3.22

Voltage reference buffer characteristics

R L

C L

Buffered/Non-buffered DAC

DAC_OUTx

Buffer(1)

12-bit

digital to

analog

converter

ai17157V3

Table 91. VREFBUF characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Analog supply voltage

Normal mode

VSCALE = 000

2.8

3.3

3.6

VSCALE = 001

2.4

3.6

VSCALE = 010

2.1

3.6

VSCALE = 011

1.8

3.6

Degraded mode

VSCALE = 000

1.62

2.80

VSCALE = 001

1.62

2.40

VSCALE = 010

1.62

2.10

VSCALE = 011

1.62

1.80

VREFBUF

_OUT

Voltage Reference

Buffer Output

Normal mode

VSCALE = 000

2.5

VSCALE = 001

2.048

VSCALE = 010

1.8

VSCALE = 011

1.5

Degraded mode(2)

VSCALE = 000

VDDA−

150 mV

-VDDA

VSCALE = 001

VDDA−

150 mV

-VDDA

VSCALE = 010

VDDA−

150 mV

-VDDA

VSCALE = 011

VDDA−

150 mV

-VDDA

TRIM

Trim step resolution

±0.05

±0.2

Load capacitor

0.5

1.50

STM32H7 Datasheet(PDF) 176 Page - STMicroelectronics

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