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STM32MP151AAA3T bảng dữ liệu(PDF) 199 Page - STMicroelectronics

tên linh kiện STM32MP151AAA3T
Giải thích chi tiết về linh kiện  Arm® Cortex®-A7 650 MHz Cortex®-M4 MPU, TFT, 35 comm. interfaces, 25 timers, adv. analog
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32MP151AAA3T bảng dữ liệu(HTML) 199 Page - STMicroelectronics

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STM32MP151A
Electrical characteristics
228
Figure 39. 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.
SINAD
Signal-to-
noise and
distortion
ratio(6)
DAC output buffer ON,
CL ≤ 50 pF, RL ≥ 5 kΩ,
1 kHz
-
67.5
-
dB
ENOB
Effective
number of
bits
DAC output buffer ON,
CL ≤ 50 pF, RL ≥ 5 kΩ,
1 kHz
-
10.9
-
bits
1. Guaranteed by characterization.
2. Difference between two consecutive codes minus 1 LSB.
3. Difference between measured the value at Code i and the value measured at Code i on a line drawn between Code 0 and
last Code 4095.
4. Difference between the value measured at Code (0x001) and the ideal value.
5. Difference between the ideal slope of the transfer function and the measured slope computed from code 0x000 and 0xFFF
when the buffer is OFF, and from code giving 0.2 V and (VREF+ - 0.2 V) when the buffer is ON.
6. Signal is -0.5dBFS with Fsampling=1 MHz.
Table 76. DAC accuracy (continued)
Symbol
Parameter
Conditions
Min
Typ(1)
Max
Unit
R L
C L
Buffered/Non-buffered DAC
DAC_OUTx
Buffer(1)
12-bit
digital to
analog
converter
ai17157V3



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