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ST7MC2 Folha de dados(PDF) 281 Page - STMicroelectronics

Nome de Peças ST7MC2
Descrição Electrónicos  8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI
PDF  308 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7MC2 Folha de dados(HTML) 281 Page - STMicroelectronics

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10-BIT ADC CHARACTERISTICS (Cont’d)
Figure 159. Typical Application with ADC
Notes:
1. When VSSA pins are not available on the pinout, the ADC refer to VSS.
2. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10k
Ω). Data
based on characterization results, not tested in production.
3. CPARASITIC represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the pad ca-
pacitance (3pF). A high CPARASITIC value will downgrade conversion accuracy. To remedy this, fADC should be reduced.
4. This graph shows that depending on the input signal variation (fAIN), CAIN can be increased for stabilization time and
decreased to allow the use of a larger serial resistor (RAIN).
AINx
ST7MC
VDD
IL
±1
µA
VT
0.6V
VT
0.6V
VAIN
RAIN
VAREF
VSSA
0.1
µF
VDD
RAREF
CADC
6pF
CAIN
10-Bit A/D
Conversion
2k
Ω(max)



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