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AD8495CRMZ-R7 데이터시트(PDF) 3 Page - Analog Devices |
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3 / 16 page AD8494/AD8495/AD8496/AD8497 Rev. 0 | Page 3 of 16 SPECIFICATIONS +VS = 5 V, −VS = 0 V, V+IN = V−IN = 0 V, VREF = 0 V, TA = TRJ = 25°C, RL = 100 kΩ, unless otherwise noted. Specifications do not include gain and offset errors of the thermocouple itself. TA is the ambient temperature at the AD849x; TRJ is the thermocouple reference junction temperature; TMJ is the thermocouple measurement junction temperature. Table 2. A Grade C Grade Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit TEMPERATURE ACCURACY Initial Accuracy AD8494/AD8495 TA = TRJ = TMJ = 25°C 3 1 °C AD8496/AD8497 TA = TRJ = 60°C, TMJ = 175°C 3 1.5 °C Ambient Temperature Rejection1 AD8494/AD8495 TA = TRJ = 0°C to 50°C 0.05 0.025 °C/°C AD8496/AD8497 TA = TRJ = 25°C to 100°C 0.05 0.025 °C/°C Gain Error2, 3 VOUT = 0.125 V to 4.125 V AD8494/AD8495 0.3 0.1 % AD8496/AD8497 0.3 0.1 % Transfer Function 5 5 mV/°C INPUTS Input Voltage Range −VS – 0.2 +VS – 1.6 −VS – 0.2 +VS – 1.6 V Overvoltage Range +VS – 25 −VS + 25 +VS – 25 −VS + 25 V Input Bias Current4 25 50 25 50 nA Input Offset Current 1.5 0.5 nA Common-Mode Rejection VCM = 0 V to 3 V 1 0.3 °C/V Power Supply Rejection +VS = 2.7 V to 5 V 0.5 0.5 °C/V NOISE Voltage Noise f = 0.1 Hz to 10 Hz, TA = 25°C 0.8 0.8 μV p-p Voltage Noise Density f = 1 kHz, TA = 25°C 32 32 nV/√Hz Current Noise Density f = 1 kHz, TA = 25°C 100 100 fA/√Hz REFERENCE INPUT Input Resistance 60 60 kΩ Input Current 25 25 μA Voltage Range −VS +VS −VS +VS V Gain to Output 1 1 V/V OUTPUT Output Voltage Range −VS + 0.025 +VS – 0.1 −VS + 0.025 +VS – 0.1 V Short-Circuit Current5 7 7 mA DYNAMIC RESPONSE −3 dB Bandwidth AD8494 30 30 kHz AD8495/AD8497 25 25 kHz AD8496 31 31 kHz Settling Time to 0.1% 4 V output step AD8494 36 36 μs AD8495/AD8497 40 40 μs AD8496 32 32 μs POWER SUPPLY Operating Voltage Range6 Single Supply 2.7 36 2.7 36 V Dual Supply ±2.7 ±18 ±2.7 ±18 V Quiescent Current 180 250 180 250 μA |
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