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STM32G0 bảng dữ liệu(PDF) 94 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Arm® Cortex®-M0 32-bit MCU, up to 128 KB Flash, 36 KB RAM, 4x USART, timers, ADC, DAC, comm. I/Fs, 1.7-3.6V
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Electrical characteristics
STM32G071x8/xB
94/135
DS12232 Rev 4
Figure 26. 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 51: I/O static characteristics.
4. Ton is the Refresh phase duration. Toff is the Hold phase duration. Refer to RM0444 reference manual for more details.
Table 59. DAC characteristics(1) (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
MSv47959V1
12-bit
digital-to-analog
converter
Buffered / non-buffered DAC
DAC_OUTx
RLOAD
CLOAD
Buffer
(1)



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