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AD8450ASTZ 数据表(PDF) 7 Page - Analog Devices |
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AD8450ASTZ 数据表(HTML) 7 Page - Analog Devices |
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7 / 42 page  AD8450 Data Sheet Rev. B | Page 6 of 41 Parameter Test Conditions/Comments Min Typ Max Unit CURRENT SHARING BUS AMPLIFIER Nominal Gain 1 V/V Offset Voltage 150 µV Offset Voltage Drift TA = TMIN to TMAX 0.6 µV/°C Output Voltage Swing AVEE + 1.5 AVCC − 1.5 V Over Temperature TA = TMIN to TMAX AVEE + 1.7 AVCC − 1.7 V Capacitive Load Drive 1000 pF Source Short-Circuit Current 40 mA Sink Short-Circuit Current 0.5 mA CMRR ΔVCM = 10 V 100 dB PSRR ΔVS = 20 V 100 dB Voltage Noise f = 1 kHz 10 nV/√Hz Voltage Noise, Peak-to-Peak f = 0.1 Hz to 10 Hz 0.4 µV p-p Small Signal −3 dB Bandwidth 3 MHz Slew Rate ΔVCS = 10 V 1 V/µs Transition Time 1.5 µs CURRENT SHARING, VINT, AND CONSTANT VOLTAGE BUFFERS Nominal Gain 1 V/V Offset Voltage 150 µV Offset Voltage Drift TA = TMIN to TMAX 0.6 µV/°C Input Bias Current CV buffer only −5 +5 nA Over Temperature TA = TMIN to TMAX −5 +5 nA Input Voltage Range AVEE + 1.5 AVCC − 1.8 V Output Voltage Swing Current Sharing and Constant Voltage Buffers AVEE + 1.5 AVCC − 1.5 V Over Temperature TA = TMIN to TMAX AVEE + 1.7 AVCC − 1.5 V VINT Buffer VVCLN − 0.6 VVCLP + 0.6 V Over Temperature TA = TMIN to TMAX VVCLN − 0.6 VVCLP + 0.6 V Output Clamps Voltage Range VINT buffer only VCLP Pin VVCLN AVCC − 1 V VCLN Pin AVEE + 1 VVCLP V Closed-Loop Output Impedance 1 Ω Capacitive Load Drive 1000 pF Short-Circuit Current 40 mA PSRR ΔVS = 20 V 100 dB Voltage Noise f = 1 kHz 10 nV/√Hz Voltage Noise, Peak-to-Peak f = 0.1 Hz to 10 Hz 0.3 µV p-p Current Noise f = 1 kHz, CV buffer only 80 fA/√Hz Current Noise, Peak-to-Peak f = 0.1 Hz to 10 Hz 5 pA p-p Small Signal −3 dB Bandwidth 3 MHz Slew Rate ΔVOUT = 10 V 1 V/µs OVERCURRENT AND OVERVOLTAGE FAULT COMPARATORS High Threshold Voltage With respect to OVPR and OCPR pins 30 45 mV Temperature Coefficient 100 µV/°C Low Threshold Voltage With respect to OVPR and OCPR pins −45 −30 mV Temperature Coefficient −100 µV/°C Input Bias Current 250 nA Input Voltage Range OVPR, OCPR, OVPS, and OCPS pins AVEE AVCC − 3 V Differential Input Voltage Range −7 +7 V |
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