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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AT43USB353M датащи(PDF) 47 Page - ATMEL Corporation |
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AT43USB353M датащи(HTML) 47 Page - ATMEL Corporation |
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47 / 95 page  47 AT43USB353M 3307B–USB–4/04 Analog-to-digital Converter Feature list: • 10-bit Resolution • 4 LSB Integral Non-linearity • ±2 LSB Absolute Accuracy • 12 – 768 µs Conversion Time • Up to 83 kSPS at Maximum Resolution • 12 Multiplexed Input Channels • Rail-to-rail Input Range • Free Running or Single Conversion Mode • Interrupt on ADC Conversion Complete The AT43USB353M features a 10-bit successive approximation ADC. The ADC is connected to a 12-channel Analog Multiplexer to pins AD0 – AD11. The ADC contains a Sample and Hold Amplifier that ensures that the input voltage to the ADC is held at a constant level during conversion. A block diagram of the ADC is shown in Figure 15. The reference voltage of the ADC is internally connected to the CEXTA voltage regulator. Figure 15. Analog-to-digital Converter Block Schematic ADC Conversion Complete IRQ 8-bit Data Bus ADC Multiplexer Select (ADMUX) Prescaler ADC Ctrl and Staus Register (ADCSR) ADC Data Register (ADCH/ADCL) Conversion Logic 10-bit DAC + - Sample and Hold Comparator Analog Inputs CEXTA 15 0 |
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