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AD7172-2 Folha de dados(PDF) 5 Page - Analog Devices |
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AD7172-2 Folha de dados(HTML) 5 Page - Analog Devices |
5 / 61 page AD7172-2 Data Sheet Rev. A | Page 4 of 60 SPECIFICATIONS AVDD1 = 3.0 V to 5.5 V, AVDD2 = IOVDD = 2 V to 5.5 V, AVSS = DGND = 0 V, REF+ = 2.5 V, REF− = AVSS, MCLK = internal master clock = 2 MHz, TA = TMIN to TMAX (−40°C to +105°C), unless otherwise noted. Table 1. Parameter Test Conditions/Comments Min Typ Max Unit ADC SPEED AND PERFORMANCE Output Data Rate (ODR) 1.25 31,250 SPS No Missing Codes1 Excluding sinc3 filter ≥ 15 kSPS 24 Bits Resolution See Table 6 and Table 7 Noise See Table 6 and Table 7 ACCURACY Integral Nonlinearity (INL) ±2 ±5 ppm of FSR Offset Error2 Internal short ±40 µV Offset Drift Internal short ±65 nV/°C Gain Error2 AVDD1 = 5 V ±5 ±45 ppm of FSR Gain Drift ±0.2 ±0.5 ppm/°C REJECTION Power Supply Rejection AVDD1, AVDD2, VIN = 1 V 98 dB Common-Mode Rejection VIN = 0.1 V At DC 95 dB At 50 Hz, 60 Hz1 20 Hz output data rate (postfilter), 50 Hz ± 1 Hz and 60 Hz ± 1 Hz 120 dB Normal Mode Rejection1 50 Hz ± 1 Hz and 60 Hz ± 1 Hz Internal clock, 20 SPS ODR (postfilter) 71 90 dB External clock, 20 SPS ODR (postfilter) 85 90 dB ANALOG INPUTS Differential Input Range VREF = (REF+) − (REF−) ±VREF V Absolute Voltage Limits1 Input Buffers Disabled AVSS − 0.05 AVDD1 + 0.05 V Input Buffers Enabled AVSS AVDD1 V Analog Input Current Input Buffers Disabled Input Current ±6 µA/V Input Current Drift External clock ±75 pA/V/°C Internal clock (±2.5% clock) ±0.5 nA/V/°C Input Buffers Enabled Input Current ±5 nA Input Current Drift ±0.1 nA/°C Crosstalk 1 kHz input −120 dB INTERNAL REFERENCE 100 nF external capacitor to AVSS Output Voltage REFOUT, with respect to AVSS 2.5 V Initial Accuracy3 REFOUT, TA = 25°C −0.12 +0.12 % of V Temperature Coefficient1 0°C to 105°C ±2 ±5 ppm/°C −40°C to +105°C ±3 ±10 ppm/°C Reference Load Current, ILOAD −10 +10 mA Power Supply Rejection AVDD1, AVDD2 (line regulation) 90 dB Load Regulation ∆VOUT/∆ILOAD 50 ppm/mA Voltage Noise eN, 0.1 Hz to 10 Hz, 2.5 V reference 4.5 µV rms Voltage Noise Density eN, 1 kHz, 2.5 V reference 215 nV/√Hz Turn On Settling Time 100 nF REFOUT capacitor 200 µs Short-Circuit Current, ISC 25 mA |
Nº de peça semelhante - AD7172-2 |
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Descrição semelhante - AD7172-2 |
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