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AD7191BRUZ-REEL Arkusz danych(PDF) 4 Page - Analog Devices |
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AD7191BRUZ-REEL Arkusz danych(HTML) 4 Page - Analog Devices |
4 / 20 page AD7191 Rev. A | Page 4 of 20 Parameter1 AD7191B Unit Test Conditions/Comments Analog Input Current Input Current2 ±2 nA max Gain = 1 ±3 nA max Gain > 1 Input Current Drift ±5 pA/°C typ REFERENCE INPUT REFIN Voltage AVDD V nom REFIN = REFIN(+) − REFIN(−). Reference Voltage Range2 1 V min AVDD V max The differential input must be limited to ±(AVDD − 1.25 V)/gain when gain > 1. Absolute REFIN Voltage Limits2 AGND – 50 mV V min AVDD + 50 mV V max Average Reference Input Current 4.5 μA/V typ Average Reference Input Current Drift ±0.03 nA/V/°C typ External clock. ±1.3 nA/V/°C typ Internal clock. Normal-Mode Rejection2 Same as for analog inputs Common-Mode Rejection 100 dB typ TEMPERATURE SENSOR Accuracy +2 °C typ Applies after user calibration at one temperature. Sensitivity 2815 Codes/°C typ BRIDGE POWER-DOWN SWITCH RON 10 Ω max Allowable Current2 30 mA max Continuous current. INTERNAL/EXTERNAL CLOCK Internal Clock Frequency 4.92 + 4% MHz min/MHz max Duty Cycle 50:50 % typ External Clock/Crystal Frequency 4.9152 MHz nom 2.4576/5.12 MHz min/MHz max Input Low Voltage, VINL 0.8 V max DVDD = 5 V. 0.4 V max DVDD = 3 V. Input High Voltage, VINH 2.5 V min DVDD = 3 V. 3.5 V min DVDD = 5 V. Input Current ±10 μA max MCLKIN = DVDD or DGND. LOGIC INPUTS Input High Voltage, VINH2 2 V min Input Low Voltage, VINL2 0.8 V max Hysteresis2 0.1/0.25 V min/V max Input Currents ±10 μA max VIN = DVDD or DGND. LOGIC OUTPUT (DOUT/RDY) Output High Voltage, VOH 2 DVDD − 0.6 V min DVDD = 3 V, ISOURCE = 100 μA. Output Low Voltage, VOL2 0.4 V max DVDD = 3 V, ISINK = 100 μA. Output High Voltage, VOH2 4 V min DVDD = 5 V, ISOURCE = 200 μA. Output Low Voltage, VOL2 0.4 V max DVDD = 5 V, ISINK = 1.6 mA. |
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