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ST7MC1K2-Auto 数据表(PDF) 348 Page - STMicroelectronics |
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ST7MC1K2-Auto 数据表(HTML) 348 Page - STMicroelectronics |
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348 / 371 page ![]() Obsolete Product(s) - Obsolete Product(s) Electrical characteristics ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto 348/371 Figure 158. RAIN max. vs fADC with CAIN =0pF 1. CPARASITIC represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the pad capacitance (3pF). A high CPARASITIC value downgrades conversion accuracy. To remedy this, fADC should be reduced. Figure 159. Recommended CAIN and RAIN values 1. 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). 0 5 10 15 20 25 30 35 40 45 010 30 70 CPARASITIC (pF) 2 MHz 1 MHz 0.1 1 10 100 1000 0.01 0.1 1 10 fAIN(KHz) Cain 10 nF Cain 22 nF Cain 47 nF Obsolete Product(s) - Obsolete Product(s) |
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