Datasheet AD8231-EP (Analog Devices) - 3

Data Sheet AD8231-EP SPECIFICATIONS
VS = 5 V, VREF = 2.5 V, G = 1, RL = 10 kΩ, TA = 25°C, unless otherwise noted.
Table 2. Parameter Test Conditions/Comments Min Typ Max Unit
INSTRUMENTATION AMPLIFIER Offset Voltage VOS RTI = VOSI + VOSO/G Input Offset, VOSI 4 15 µV Average Temperature Drift TA = −55°C to +125°C 0.01 0.05 µV/°C Output Offset, VOSO 15 30 µV Average Temperature Drift TA = −55°C to +125°C 0.05 0.5 µV/°C Input Currents Input Bias Current 250 500 pA TA = −55°C to +125°C 5 nA Input Offset Current 20 100 pA TA = −55°C to +125°C 0.5 nA Gains 1, 2, 4, 8, 16, 32, 64, or 128 Gain Error G = 1 0.05 % G = 2 to 128 0.8 % Gain Drift TA = −55°C to +125°C G = 1 to 32 3 10 ppm/°C G = 64 4 20 ppm/°C G = 128 10 30 ppm/°C Linearity 0.2 V to 4.8 V, 10 kΩ load 3 ppm 0.2 V to 4.8 V, 2 kΩ load 5 ppm CMRR G = 1 80 dB G = 2 86 dB G = 4 92 dB G = 8 98 dB G = 16 104 dB G = 32 110 dB G = 64 110 dB G = 128 110 dB Noise e 2 n = √(eni + (eno/G)2), VIN+, VIN− = 2.5 V Input Voltage Noise, eni f = 1 kHz 32 nV/√Hz f = 1 kHz, TA = −55°C 27 nV/√Hz f = 1 kHz, TA = 125°C 39 nV/√Hz f = 0.1 Hz to 10 Hz 0.7 µV p-p Output Voltage Noise, eno f = 1 kHz 58 nV/√Hz f = 1 kHz, TA = −55°C 50 nV/√Hz f = 1 kHz, TA = 125°C 70 nV/√Hz f = 0.1 Hz to 10 Hz 1.1 µV p-p Current Noise f = 10 Hz 20 fA/√Hz Other Input Characteristics Common-Mode Input Impedance 10||5 GΩ||pF Power Supply Rejection Ratio 100 115 dB Input Operating Voltage Range 0.05 4.95 V Reference Input Input Impedance 28 kΩ Voltage Range −0.2 +5.2 V Rev. A | Page 3 of 20 Document Outline FEATURES ENHANCED PRODUCT FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS INSTRUMENTATION AMPLIFIER PERFORMANCE CURVES OPERATIONAL AMPLIFIER PERFORMANCE CURVES PERFORMANCE CURVES VALID FOR BOTH AMPLIFIERS OUTLINE DIMENSIONS ORDERING GUIDE