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AD7751 датащи(PDF) 2 Page - Analog Devices |
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AD7751 датащи(HTML) 2 Page - Analog Devices |
2 / 14 page REV. 0 –2– AD7751–SPECIFICATIONS1 (AVDD = DVDD = 5 V 5%, AGND = DGND = 0 V, On-Chip Reference, CLKIN = 3.58 MHz, TMIN to TMAX = – 40 C to +85 C) Parameter A Version B Version Unit Test Conditions/Comments ACCURACY 1 Measurement Error 1 on Channel 1 Channel 2 with Full-Scale Signal ( ±660 mV), 25°C Gain = 1 0.1 0.1 % Reading typ Over a Dynamic Range 500 to 1 Gain = 2 0.1 0.1 % Reading typ Over a Dynamic Range 500 to 1 Gain = 8 0.1 0.1 % Reading typ Over a Dynamic Range 500 to 1 Gain = 16 0.1 0.1 % Reading typ Over a Dynamic Range 500 to 1 Phase Error 1 Between Channels Line Frequency = 45 Hz to 65 Hz V1 Phase Lead 37 ° (PF = 0.8 Capacitive) ±0.1 ±0.1 Degrees( °) max AC/DC = 0 and AC/DC = 1 V1 Phase Lag 60 ° (PF = 0.5 Inductive) ±0.1 ±0.1 Degrees( °) max AC/DC = 0 and AC/DC = 1 AC Power Supply Rejection 1 AC/ DC = 1, S0 = S1 = 1, G0 = G1 = 0 Output Frequency Variation (CF) 0.01 0.01 % Reading typ V1 = 100 mV rms, V2 = 100 mV rms @ 50 Hz Ripple on AVDD of 200 mV rms @ 100 Hz DC Power Supply Rejection 1 AC/ DC = 1, S0 = S1 = 1, G0 = G1 = 0 Output Frequency Variation (CF) 0.01 0.01 % Reading typ V1 = 100 mV rms, V2 = 100 mV rms, AVDD = AVDD = 5 V ± 250 mV FAULT DETECTION 1, 2 See Fault Detection Section, PF = 1 Fault Detection Threshold Inactive i/p <> Active i/p 12.5 12.5 % typ (V1A or V1B Active) Input Swap Threshold Inactive i/p > Active i/p 14 14 % of Active typ (V1A or V1B Active) Accuracy Fault Mode Operation V1A Active, V1B = AGND 0.1 0.1 % Reading typ Over a Dynamic Range 500 to 1 V1B Active, V1A = AGND 0.1 0.1 % Reading typ Over a Dynamic Range 500 to 1 Fault Detection Delay 3 3 Second typ Swap Delay 3 3 Second typ ANALOG INPUTS See Analog Inputs Section Maximum Signal Levels ±1 ±1 V max V1A, V1B, V1N, V2N and V2P to AGND Input Impedance (DC) 400 400 k Ω min CLKIN = 3.58 MHz Bandwidth 14 14 kHz typ CLKIN/256, CLKIN = 3.58 MHz ADC Offset Error 1 ±15 ±15 mV max See Terminology and Gain Error 1 ±4 ±4 % Ideal typ External 2.5 V Reference, Gain = 1, V1 = V2 = 660 mV dc Gain Error Match 1 ±0.2 ±0.2 % Ideal typ External 2.5 V Reference REFERENCE INPUT REFIN/OUT Input Voltage Range 2.7 2.7 V max 2.5 V + 8% 2.3 2.3 V min 2.5 V – 8% Input Impedance 3.7 3.7 k Ω min Input Capacitance 10 10 pF max ON-CHIP REFERENCE Nominal 2.5 V Reference Error ±200 ±200 mV max Temperature Coefficient 30 30 ppm/ °C typ 60 ppm/ °C max CLKIN Note All Specifications for CLKIN of 3.58 MHz Input Clock Frequency 4 4 MHz max 1 1 MHz min LOGIC INPUTS 3 SCF, S0, S1, AC/ DC, RESET, G0 and G1 Input High Voltage, VINH 2.4 2.4 V min DVDD = 5 V ± 5% Input Low Voltage, VINL 0.8 0.8 V max DVDD = 5 V ± 5% Input Current, IIN ±3 ±3 µA max Typically 10 nA, VIN = 0 V to DVDD Input Capacitance, CIN 10 10 pF max |
Аналогичный номер детали - AD7751_15 |
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Аналогичное описание - AD7751_15 |
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