Datasheet AD648 (Analog Devices) - 2

AD648–SPECIFICATIONS (@ + 25
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C and VS =
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15 V dc, unless otherwise noted.) AD648J/A/S AD648K/B/T Model Min Typ Max Min Typ Max Unit
INPUT OFFSET VOLTAGE1 Initial Offset 0.75 2.0 0.3 1.0 TMIN to TMAX 3.0/3.0/3.0 1.5/1.5/2.0 mV vs. Temperature 20 10 µV/°C vs. Supply 80 86 dB vs. Supply, TMIN to TMAX 76/76/76 80 dB Long-Term Offset Stability 15 15 µV/month INPUT BIAS CURREN Either Input,2 VCM = 0 5 20 3 10 pA Either Input2 at TMAX, VCM = 0 0.45/1.3/20 0.25/0.65/10 nA Max Input Bias Current Over Common-Mode Voltage Range 30 15 pA Offset Current, VCM = 0 5 10 2 5 pA Offset Current at TMAX 0.25/0.7/10 0.15/0.35/5 nA MATCHING CHARACTERISTICS3 Input Offset Voltage 1.0 2.0 0.5 1.0 mV Input Offset Voltage TMIN to TMAX 3.0/3.0/3.0 1.5/1.5/2.0 mV Input Offset Voltage vs. Temperature 8 5 µV/°C Input Bias Current 10 5 pA Crosstalk –120 –120 dB INPUT IMPEDANCE Differential 1 × 101 2储3 1 × 1012储3 Ω储pF Common Mode 3 × 1012储3 3 × 1012储3 Ω储pF INPUT VOLTAGE RANGE Differential4 ±20 ±20 V Common Mode ±11 ±12 ±11 ±12 V Common-Mode Rejection VCM = ± 10 V 76 82 dB TMIN to TMAX 76/76/76 82 dB VCM = ± 11 V 70 76 dB TMIN to TMAX 70/70/70 76 dB INPUT VOLTAGE NOISE Voltage 0.1 Hz to 10 Hz 2 2 µV p-p f = 10 Hz 80 80 nV/√Hz f = 100 Hz 40 40 nV/√Hz f = 1 kHz 30 30 nV/√Hz f = 10 kHz 30 30 nV/√Hz INPUT CURRENT NOISE f = 1 kHz 1.8 1.8 fA/√Hz FREQUENCY RESPONSE Unity Gain, Small Signal 0.8 1.0 0.8 1.0 MHz Full Power Response 30 30 kHz Slew Rate, Unity Gain 1.0 1.8 1.0 1.8 V/µs Settling Time to ± 0.01% 8 8 µs OPEN-LOOP GAIN VO = ± 10 V, RL ≥ 10 kΩ 300 1000 300 1000 V/mV TMIN to TMAX, RL ≥ 10 kΩ 300/300/300 700 300 700 V/mV VO = ± 10 V, RL ≥ 5 kΩ 150 500 150 500 V/mV TMIN to TMAX, RL ≥ 5 kΩ 150/150/150 300 150 300 V/mV –2– REV. E