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56F8167 数据表(PDF) 161 Page - Freescale Semiconductor, Inc |
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56F8167 数据表(HTML) 161 Page - Freescale Semiconductor, Inc |
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161 / 184 page  Analog-to-Digital Converter (ADC) Parameters 56F8367 Technical Data, Rev. 7.0 Freescale Semiconductor 161 Preliminary 10.16 Analog-to-Digital Converter (ADC) Parameters Table 10-24 ADC Parameters Characteristic Symbol Min Typ Max Unit Input voltages VADIN VREFL —VREFH V Resolution RES 12 — 12 Bits Integral Non-Linearity1 INL — +/- 2.4 +/- 3.2 LSB2 Differential Non-Linearity DNL — +/- 0.7 < +1 LSB2 Monotonicity GUARANTEED ADC internal clock fADIC 0.5 — 5 MHz Conversion range RAD VREFL —VREFH V ADC channel power-up time tADPU 56 16 tAIC cycles 3 ADC reference circuit power-up time4 tVREF —— 25 ms Conversion time tADC —6 — tAIC cycles 3 Sample time tADS —1 — tAIC cycles 3 Input capacitance CADI —5 — pF Input injection current5, per pin IADI —— 3 mA Input injection current, total IADIT —— 20 mA VREFH current IVREFH —1.2 3 mA ADC A current IADCA —25 — mA ADC B current IADCB —25 — mA Quiescent current IADCQ —0 10 µA Uncalibrated Gain Error (ideal = 1) EGAIN — .+/- .004 +/- .01 — Uncalibrated Offset Voltage VOFFSET — +/- 27 +/- 40 mV Calibrated Absolute Error6 AECAL — See Figure 10-22 —LSBs Calibration Factor 17 CF1 — 0.002289 — — Calibration Factor 2 CF2 — -25.6 — — Crosstalk between channels — — -60 — dB Common Mode Voltage Vcommon —(VREFH - VREFLO) / 2 — V Signal-to-noise ratio SNR — 64.6 — db |
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