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K32L2AX датащи(PDF) 65 Page - NXP Semiconductors |
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K32L2AX датащи(HTML) 65 Page - NXP Semiconductors |
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65 / 96 page ![]() 3. The ADC supply current depends on the ADC conversion clock speed, conversion rate and ADC_CFG1[ADLPC] (low power). For lowest power operation, ADC_CFG1[ADLPC] must be set, the ADC_CFG2[ADHSC] bit must be clear with 1 MHz ADC conversion clock speed. 4. 1 LSB = (VREFH - VREFL)/2N 5. ADC conversion clock < 16 MHz, Max hardware averaging (AVGE = %1, AVGS = %11) 6. Input data is 100 Hz sine wave. ADC conversion clock < 12 MHz. 7. Input data is 1 kHz sine wave. ADC conversion clock < 12 MHz. 8. ADC conversion clock < 3 MHz Typical ADC 16-bit Differential ENOB vs ADC Clock 100Hz, 90% FS Sine Input ADC Clock Frequency (MHz) 15.00 14.70 14.40 14.10 13.80 13.50 13.20 12.90 12.60 12.30 12.00 1 2 3 4 5 6 7 8 9 10 12 11 Hardware Averaging Disabled Averaging of 4 samples Averaging of 8 samples Averaging of 32 samples Figure 12. Typical ENOB vs. ADC_CLK for 16-bit differential mode Typical ADC 16-bit Single-Ended ENOB vs ADC Clock 100Hz, 90% FS Sine Input ADC Clock Frequency (MHz) 14.00 13.75 13.25 13.00 12.75 12.50 12.00 11.75 11.50 11.25 11.00 1 2 3 4 5 6 7 8 9 10 12 11 Averaging of 4 samples Averaging of 32 samples 13.50 12.25 Figure 13. Typical ENOB vs. ADC_CLK for 16-bit single-ended mode Peripheral operating requirements and behaviors K32 L2A Microcontroller with 512 KB Flash and 128 KB SRAM, Rev. 3, 02/2021 65 NXP Semiconductors |
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