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STM32F051K4U6 bảng dữ liệu(PDF) 80 Page - STMicroelectronics

tên linh kiện STM32F051K4U6
Giải thích chi tiết về linh kiện  Low- and medium-density advanced ARM??based 32-bit MCU with 16 to 64 Kbytes Flash, timers, ADC, DAC and comm. interfaces
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32F051K4U6 bảng dữ liệu(HTML) 80 Page - STMicroelectronics

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STM32F051x
Electrical characteristics
Doc ID 022265 Rev 3
81/105
Figure 24.
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.
tSETTLING
(2)
Settling time (full scale: for a
10-bit input code transition
between the lowest and the
highest input codes when
DAC_OUT reaches final
value ±1LSB
-3
4
µs CLOAD ≤ 50 pF, RLOAD ≥ 5 kΩ
Update
rate(2)
Max frequency for a correct
DAC_OUT change when
small variation in the input
code (from code i to i+1LSB)
--
1
MS/s CLOAD ≤ 50 pF, RLOAD ≥ 5 kΩ
tWAKEUP
(2)
Wakeup time from off state
(Setting the ENx bit in the
DAC Control register)
-
6.5
10
µs
CLOAD ≤ 50 pF, RLOAD ≥ 5 kΩ
input code between lowest and
highest possible ones.
PSRR+ (1)
Power supply rejection ratio
(to VDDA) (static DC
measurement
-
–67
–40
dB No RLOAD, CLOAD = 50 pF
1.
Guaranteed by design, not tested in production.
2.
Data based on characterization results, not tested in production.
Table 57.
DAC characteristics (continued)
Symbol
Parameter
Min
Typ
Max
Unit
Comments
R LOAD
C LOAD
Buffered/Non-buffered DAC
DACx_OUT
Buffer(1)
12-bit
digital to
analog
converter
ai17157



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