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AD8421 Scheda tecnica(PDF) 3 Page - Analog Devices |
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AD8421 Scheda tecnica(HTML) 3 Page - Analog Devices |
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3 / 28 page  Data Sheet AD8421 Rev. 0 | Page 3 of 28 SPECIFICATIONS VS = ±15 V, VREF = 0 V, TA = 25°C, G = 1, RL = 2 kΩ, unless otherwise noted. AR AND BR GRADES Table 1. AR Grade BR Grade Parameter Test Conditions/ Comments Min Typ Max Min Typ Max Unit COMMON-MODE REJECTION RATIO (CMRR) CMRR DC to 60 Hz with 1 kΩ Source Imbalance VCM = −10 V to +10 V G = 1 86 94 dB G = 10 106 114 dB G = 100 126 134 dB G = 1000 136 140 dB Over Temperature, G = 1 T = −40°C to +85°C 80 93 dB CMRR at 20 kHz VCM = −10 V to +10 V G = 1 80 80 dB G = 10 90 100 dB G = 100 100 110 dB G = 1000 110 120 dB NOISE Voltage Noise, 1 kHz1 VIN+, VIN− = 0 V Input Voltage Noise, eni 3 3.2 3 3.2 nV/√Hz Output Voltage Noise, eno 60 60 nV/√Hz Peak to Peak, RTI f = 0.1 Hz to 10 Hz G = 1 2 2 2.2 μV p-p G = 10 0.5 0.5 μV p-p G = 100 to 1000 0.07 0.07 0.09 μV p-p Current Noise Spectral Density f = 1 kHz 200 200 fA/√Hz Peak to Peak, RTI f = 0.1 Hz to 10 Hz 18 18 pA p-p VOLTAGE OFFSET2 Input Offset Voltage, VOSI VS = ±5 V to ±15 V 60 25 μV Over Temperature TA = −40°C to +85°C 86 45 μV Average TC 0.4 0.2 μV/°C Output Offset Voltage, VOSO 350 250 μV Over Temperature TA = −40°C to +85°C 0.66 0.45 mV Average TC 6 5 μV/°C Offset RTI vs. Supply (PSR) VS = ±2.5 V to ±18 V G = 1 90 120 100 120 dB G = 10 110 120 120 140 dB G = 100 124 130 140 150 dB G = 1000 130 140 140 150 dB INPUT CURRENT Input Bias Current 1 2 0.1 0.5 nA Over Temperature TA = −40°C to +85°C 8 6 nA Average TC 50 50 pA/°C Input Offset Current 0.5 2 0.1 0.5 nA Over Temperature TA = −40°C to +85°C 2.2 0.8 nA Average TC 1 1 pA/°C |
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