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STM32F071X8 bảng dữ liệu(PDF) 87 Page - STMicroelectronics

tên linh kiện STM32F071X8
Giải thích chi tiết về linh kiện  ARM-based 32-bit MCU, up to 128 KB Flash, 12 timers, ADC, DAC & communication interfaces, 2.0 - 3.6 V
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32F071x8 STM32F071xB
Electrical characteristics
96
Figure 27. 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.
Gain error(3) Gain error
-
-
±0.5
%
Given for the DAC in 12-bit
configuration
tSETTLING(3)
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(3)
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(3)
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. The DAC is in “quiescent mode” when it keeps the value steady on the output so no dynamic consumption is involved.
3. Data based on characterization results, not tested in production.
Table 60. DAC characteristics (continued)
Symbol
Parameter
Min
Typ
Max
Unit
Comments



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