Datasheet AD8221 (Analog Devices) - 4

AD8221 SPECIFICATIONS VS = ±15 V, VREF = 0 V, TA = 25°C, G = 1, RL = 2 kΩ, unless otherwise noted.
Table 1. AR Grade BR Grade Parameter Conditions Min Typ Max Min Typ Max Unit
COMMON-MODE REJECTION RATIO CMRR DC to 60 Hz with 1 kΩ VCM = −10 V to +10 V Source Imbalance G = 1 80 90 dB G = 10 100 110 dB G = 100 120 130 dB G = 1000 130 140 dB CMRR at 10 kHz VCM = −10 V to +10 V G = 1 80 80 dB G = 10 90 100 dB G = 100 100 110 dB G = 1000 100 110 dB NOISE RTI noise = √e 2 NI + (eNO/G)2 Voltage Noise, 1 kHz Input Voltage Noise, eNI VIN+, VIN−, VREF = 0 8 8 nV/√Hz Output Voltage Noise, eNO 75 75 nV/√Hz RTI f = 0.1 Hz to 10 Hz G = 1 2 2 µV p-p G = 10 0.5 0.5 µV p-p G = 100 to 1000 0.25 0.25 µV p-p Current Noise f = 1 kHz 40 40 fA/√Hz f = 0.1 Hz to 10 Hz 6 6 pA p-p VOLTAGE OFFSET1 Input Offset, VOSI VS = ±5 V to ±15 V 60 25 µV Over Temperature T = −40°C to +85°C 86 45 µV Average TC 0.4 0.3 µV/°C Output Offset, VOSO VS = ±5 V to ±15 V 300 200 µV Over Temperature T = −40°C to +85°C 0.66 0.45 mV Average TC 6 5 µV/°C Offset RTI vs. Supply (PSR) VS = ±2.3 V to ±18 V G = 1 90 110 94 110 dB G = 10 110 120 114 130 dB G = 100 124 130 130 140 dB G = 1000 130 140 140 150 dB INPUT CURRENT Input Bias Current 0.5 1.5 0.2 0.4 nA Over Temperature T = −40°C to +85°C 2.0 1 nA Average TC 1 1 pA/°C Input Offset Current 0.2 0.6 0.1 0.4 nA Over Temperature T = −40°C to +85°C 0.8 0.6 nA Average TC 1 1 pA/°C REFERENCE INPUT RIN 20 20 kΩ IIN VIN+, VIN−, VREF = 0 50 60 50 60 µA Voltage Range –VS +VS –VS +VS V Gain to Output 1 ± 0.0001 1 ± 0.0001 V/V Rev. C | Page 3 of 24