link to page 6 AD820 VS = ±5 V @ TA = 25°C, VCM = 0 V, VOUT = 0 V, unless otherwise noted. Table 2.AD820AAD820BParameterConditionsMinTypMaxMinTypMaxUnit DC PERFORMANCE Initial Offset 0.1 0.8 0.3 0.4 mV Maximum Offset over Temperature 0.5 1.5 0.5 1 mV Offset Drift 2 2 μV/°C Input Bias Current V = −5 V to +4 V 2 25 2 10 pA CM At T 0.5 5 0.5 2.5 nA MAX Input Offset Current 2 20 2 10 pA At T 0.5 0.5 nA MAX Open-Loop Gain V = −4 V to +4 V OUT R = 100 kΩ 400 1000 400 1000 V/mV L T to T 400 400 V/mV MIN MAX R = 10 kΩ 80 150 80 150 V/mV L T to T 80 80 V/mV MIN MAX R = 1 kΩ 20 30 20 30 V/mV L T to T 10 10 V/mV MIN MAX NOISE/HARMONIC PERFORMANCE Input Voltage Noise f = 0.1 Hz to 10 Hz 2 2 μV p-p f = 10 Hz 25 25 nV/√Hz f = 100 Hz 21 21 nV/√Hz f = 1 kHz 16 16 nV/√Hz f = 10 kHz 13 13 nV/√Hz Input Current Noise f = 0.1 Hz to 10 Hz 18 18 fA p-p f = 1 kHz 0.8 0.8 fA/√Hz Harmonic Distortion R = 10 kΩ L f = 10 kHz V = ±4.5 V −93 −93 dB OUT DYNAMIC PERFORMANCE Unity Gain Frequency 1.9 1.8 MHz Full Power Response V p-p = 9 V 105 105 kHz OUT Slew Rate 3 3 V/μs Settling Time V = 0 V to ±4.5 V OUT To 0.1% 1.4 1.4 μs To 0.01% 1.8 1.8 μs INPUT CHARACTERISTICS Common-Mode Voltage Range1 T to T −5.2 +4 −5.2 +4 V MIN MAX CMRR V = −5 V to +2 V 66 80 72 80 dB CM T to T 66 66 dB MIN MAX Input Impedance Differential 1013||0.5 1013||0.5 Ω||pF Common Mode 1013||2.8 1013||2.8 Ω||pF Rev. H | Page 5 of 24 Document Outline Features Applications Pin Configurations General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Typical Performance Characteristics Applications Information Input Characteristics Output Characteristics Single-Supply Half-Wave and Full-Wave Rectifiers 4.5 V Low Dropout, Low Power Reference Low Power, 3-Pole, Sallen Key Low-Pass Filter Offset Voltage Adjustment Outline Dimensions Ordering Guide