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32G474 bảng dữ liệu(PDF) 157 Page - STMicroelectronics

tên linh kiện 32G474
Giải thích chi tiết về linh kiện  Arm® Cortex®-M4 32-bit MCUFPU, 170 MHz / 213 DMIPS, 128 KB SRAM, rich analog, math acc, 184 ps 12 chan Hi-res timer
PDF  236 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

32G474 bảng dữ liệu(HTML) 157 Page - STMicroelectronics

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STM32G474xB STM32G474xC STM32G474xE
Electrical characteristics
201
Figure 30. 12-bit buffered / non-buffered DAC
1. The DAC integrates an output buffer 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 54: I/O static characteristics.
4. Ton is the Refresh phase duration. Toff is the Hold phase duration. Refer to the reference manual RM0440 "STM32G4
Series advanced Arm®-based 32-bit MCUs" for more details.
Table 74. DAC 1MSPS 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



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