Datasheet AD8221 (Analog Devices) - 6

AD8221
AR Grade BR Grade Parameter Conditions Min Typ Max Min Typ Max Unit
TEMPERATURE RANGE Specified Performance –40 +85 –40 +85 °C Operating Range4 –40 +125 –40 +125 °C 1 Total RTI VOS = (VOSI) + (VOSO/G). 2 Does not include the effects of external resistor RG. 3 One input grounded. G = 1. 4 See Typical Performance Characteristics for expected operation between 85°C to 125°C.
Table 2. ARM Grade Parameter Conditions Min Typ Max Unit
COMMON-MODE REJECTION RATIO (CMRR) CMRR DC to 60 Hz with 1 kΩ Source Imbalance V = −10 V to +10 V CM G = 1 80 dB G = 10 100 dB G = 100 120 dB G = 1000 130 dB CMRR at 10 kHz V = –10 V to +10 V CM G = 1 80 dB G = 10 90 dB G = 100 100 dB G = 1000 100 dB NOISE RTI noise = √e 2 + (e /G)2 NI NO Voltage Noise, 1 kHz Input Voltage Noise, e V , V , V = 0 8 nV/√Hz NI IN+ IN− REF Output Voltage Noise, e 75 nV/√Hz NO RTI f = 0.1 Hz to 10 Hz G = 1 2 µV p-p G = 10 0.5 µV p-p G = 100 to 1000 0.25 µV p-p Current Noise f = 1 kHz 40 fA/√Hz f = 0.1 Hz to 10 Hz 6 pA p-p VOLTAGE OFFSET1 Input Offset, V V = ±5 V to ±15 V 70 µV OSI S Over Temperature T = −40°C to +85°C 135 µV Average TC 0.9 µV/°C Output Offset, V V = ±5 V to ±15 V 600 µV OSO S Over Temperature T = −40°C to +85°C 1.00 mV Average TC 9 µV/°C Offset RTI vs. Supply (PSR) V = ±2.3 V to ±18 V S G = 1 90 100 dB G = 10 100 120 dB G = 100 120 140 dB G = 1000 120 140 dB INPUT CURRENT Input Bias Current 0.5 2 nA Over Temperature T = −40°C to +85°C 3 nA Average TC 3 pA/°C Input Offset Current 0.3 1 nA Over Temperature T = −40°C to +85°C 1.5 nA Average TC 3 pA/°C Rev. C | Page 5 of 24