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AD7732 数据表(PDF) 4 Page - Analog Devices |
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AD7732 数据表(HTML) 4 Page - Analog Devices |
4 / 32 page AD7732 Rev. A | Page 4 of 32 Parameter Min Typ Max Unit Test Conditions/Comments RA, RB, RC, RD Pin Impedance1, 9 25 31 k Ω Input Resistor Matching 0.2 % Input Resistor Temp. Coefficient –30 ppm/°C REFERENCE INPUTS REFIN(+) to REFIN(–) Voltage1, 10 2.475 2.5 2.525 V NOREF Trigger Voltage 0.5 V NOREF Bit in Channel Status Register REFIN(+), REFIN(–) Common-Mode Voltage1 0 AVDD V Reference Input DC Current11 400 μA SYSTEM CALIBRATION1, 12 Full-Scale Calibration Limit +1.05 × FS V Zero-Scale Calibration Limit –1.05 × FS V Input Span 0.8 × FS 2.1 × FS V LOGIC INPUTS Input Current ±1 μA Input Current CS ±10 μA CS = DVDD –40 μA CS = DGND, Internal Pull-Up Resistor Input Capacitance 5 pF VT+1 1.4 2 V DVDD = 5 V VT–1 0.8 1.4 V DVDD = 5 V VT+ – VT–1 0.3 0.85 V DVDD = 5 V VT+1 0.95 2 V DVDD = 3 V VT– 1 0.4 1.1 V DVDD = 3 V VT+ – VT–1 0.3 0.85 V DVDD = 3 V MCLK IN ONLY Input Current ±10 μA Input Capacitance 5 pF VINL Input Low Voltage 0.8 V DVDD = 5 V VINH Input High Voltage 3.5 V DVDD = 5 V VINL Input Low Voltage 0.4 V DVDD = 3 V VINH Input High Voltage 2.5 V DVDD = 3 V LOGIC OUTPUTS13 VOL Output Low Voltage 0.4 V ISINK = 800 μA, DVDD = 5 V VOH Output High Voltage 4.0 V ISOURCE = 200 μA, DVDD = 5 V VOL Output Low Voltage 0.4 V ISINK = 100 μA, DVDD = 3 V VOH Output High Voltage DVDD – 0.6 V ISOURCE = 100 μA, DVDD = 3 V Floating State Leakage Current ±1 μA Floating State Leakage Capacitance 3 pF P0, P1 INPUTS/OUTPUTS Levels Referenced to Analog Supplies Input Current ±10 μA VINL Input Low Voltage 0.8 V AVDD = 5 V VINH Input High Voltage 3.5 V AVDD = 5 V VOL Output Low Voltage 0.4 V ISINK = 7 mA, See Abs. Max. Ratings VOH Output High Voltage 4.0 V ISOURCE = 200 μA, AVDD = 5 V POWER REQUIREMENTS AVDD–AGND Voltage 4.75 5.25 V DVDD–DGND Voltage 4.75 5.25 V 2.70 3.60 V AVDD Current (Normal Mode) 13.5 15.9 mA AVDD = 5 V DVDD Current (Normal Mode)14 2.8 3.1 mA DVDD = 5 V DVDD Current (Normal Mode) 14 1.0 1.5 mA DVDD = 3 V |
类似零件编号 - AD7732_15 |
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类似说明 - AD7732_15 |
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