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AD7173-8BCPZ Arkusz danych(PDF) 3 Page - Analog Devices |
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AD7173-8BCPZ Arkusz danych(HTML) 3 Page - Analog Devices |
3 / 64 page Data Sheet AD7173-8 SPECIFICATIONS AVDD1 = 3.0 V to 5.5 V, AVDD2 = 2 V to 5.5 V, IOVDD = 2 V to 5.5 V, AVSS = DGND = 0 V, REF+ = 2.5 V, REF− = AVSS, internal master clock = 2 MHz, TA = TMIN to TMAX, unless otherwise noted. Table 1. Parameter Test Conditions/Comments Min Typ Max Unit ADC SPEED AND PERFORMANCE Output Data Rate (ODR) 1.25 31250 SPS No Missing Codes1 Excluding sinc3 filter at 31.25 kSPS 24 Bits Resolution See Table 6 Noise See Table 6 Noise Free Resolution Sinc5 + sinc1 filter (default) 31.25 kSPS, REF+ = 5 V 17.5 Bits 2.6 kSPS, REF+ = 5 V 18.4 Bits 1.25 SPS, REF+ = 5 V 24 Bits ACCURACY Integral Nonlinearity (INL) 2.5 V reference ±3 ±7.5 ppm/FSR 5 V reference ±5 ppm/FSR Offset Error2 Internal short ±40 µV Offset Drift Internal short ±350 nV/°C Offset Drift vs. Time3 ±450 nV/1000 hrs Gain Error2 25°C, AVDD1 = 5 V ±10 ±50 ppm/FSR Gain Drift vs. Temperature1 ±0.5 ±1 ppm/FSR/°C Gain Drift vs. Time3 ±3 ppm/FSR/ 1000 hrs REJECTION Power Supply Rejection AVDD1 and AVDD2, VIN = 1 V 90 dB Common-Mode Rejection VIN = 0.1 V At DC 95 dB At 50 Hz and 60 Hz1 20 SPS ODR (post filter); 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 (post filter) 71 90 dB External clock, 20 SPS ODR (post filter) 85 90 dB ANALOG INPUTS Differential Input Voltage Range ±VREF V Absolute AIN Voltage Limits1 Buffers Disabled AVSS − 0.05 AVDD1 + 0.05 V Buffers Enabled AVSS AVDD1 − 1.1 V Analog Input Current Buffers Enabled Single cycle settling enabled (default) Input Current ±2 nA Input Current Drift ±25 pA/°C Buffers Disabled Input Current ±6 µA/V Input Current Drift External clock ±0.1 nA/V/°C Internal clock (±2.5% clock) ±0.5 nA/V/°C Crosstalk 1 kHz input −120 dB INTERNAL REFERENCE 100 nF external capacitor on REFOUT to AVSS Output Voltage REFOUT with respect to AVSS 2.5 V Initial Accuracy1 TA = 25°C4 −0.1 +0.1 % of V Temperature Coefficient 0°C to +105°C 3.5 8 ppm/°C −40°C to +105°C 3.5 10 ppm/°C Reference Load Current, ILOAD IL −10 +10 mA Rev. 0 | Page 3 of 64 |
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