link to page 5 Known Good DieAD8221-KGDSPECIFICATIONS Supply voltage (VS) = ±15 V, REF voltage (VREF) = 0 V, TA = 25°C, gain = 1, and load resistance (RL) = 2 kΩ, unless otherwise noted. Table 1. ParameterTest Conditions/CommentsMinTypMaxUnit CMRR DC to 60 Hz with 1 kΩ Source Imbalance Common-mode voltage (VCM) = −10 V to +10 V Gain = 1 80 dB Gain = 10 100 dB Gain = 100 120 dB Gain = 1000 130 dB At 10 kHz VCM = –10 V to +10 V Gain = 1 80 dB Gain = 10 90 dB Gain = 100 100 dB Gain = 1000 100 dB NOISE RTI noise = √e 2 NI + (eNO/Gain)2 Voltage Noise, 1 kHz Input Voltage Noise, eNI +IN voltage (V+IN), −IN voltage 8 nV/√Hz (V−IN), VREF = 0 V Output Voltage Noise, eNO 75 nV/√Hz Return to Input (RTI) Frequency = 0.1 Hz to 10 Hz Gain = 1 2 µV p-p Gain = 10 0.5 µV p-p Gain = 100 to 1000 0.25 µV p-p Current Noise Frequency = 1 kHz 40 fA/√Hz Frequency = 0.1 Hz to 10 Hz 6 pA p-p VOLTAGE OFFSET1 Input Offset, VOSI VS = ±5 V to ±15 V 70 µV Over Temperature TA = −40°C to +85°C 135 µV Average Temperature Coefficient 0.9 µV/°C Output Offset, VOSO VS = ±5 V to ±15 V 600 µV Over Temperature TA = −40°C to +85°C 1.00 mV Average Temperature Coefficient 9 µV/°C Offset RTI vs. Supply (Power Supply Ratio) VS = ±2.3 V to ±18 V Gain = 1 90 110 dB Gain = 10 110 120 dB Gain = 100 124 130 dB Gain = 1000 130 140 dB INPUT CURRENT Input Bias Current 0.5 1.5 nA Over Temperature TA = −40°C to +85°C 2.0 nA Average Temperature Coefficient 1 pA/°C Input Offset Current 0.2 0.6 nA Over Temperature TA = −40°C to +85°C 0.8 nA Average Temperature Coefficient 1 pA/°C Rev. 0 | Page 3 of 8 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION CONNECTION DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUTLINE DIMENSIONS DIE SPECIFICATIONS AND ASSEMBLY RECOMMENDATIONS ORDERING GUIDE