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AD7755AAN 데이터시트(PDF) 2 Page - Analog Devices |
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AD7755AAN 데이터시트(HTML) 2 Page - Analog Devices |
2 / 16 page REV. B –2– AD7755–SPECIFICATIONS (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, 2 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) 0.2 0.2 % 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) ±0.3 ±0.3 % Reading typ V1 = 100 mV rms, V2 = 100 mV rms, AVDD = DVDD = 5 V ± 250 mV ANALOG INPUTS See Analog Inputs Section Maximum Signal Levels ± 1 ± 1 V max V1P, V1N, V2N and V2P to AGND Input Impedance (DC) 390 390 k Ω min CLKIN = 3.58 MHz Bandwidth (–3 dB) 14 14 kHz typ CLKIN/256, CLKIN = 3.58 MHz ADC Offset Error 1, 2 ±25 ±25 mV max Gain = 1, See Terminology and Performance Graphs Gain Error 1 ± 7 ± 7 % Ideal typ External 2.5 V Reference, Gain = 1 V1 = 470 mV dc, 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 3.2 3.2 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 LOGIC OUTPUTS 3 F1 and F2 Output High Voltage, VOH ISOURCE = 10 mA 4.5 4.5 V min DVDD = 5 V Output Low Voltage, VOL ISINK = 10 mA 0.5 0.5 V max DVDD = 5 V CF and REVP Output High Voltage, VOH ISOURCE = 5 mA 4 4 V min DVDD = 5 V Output Low Voltage, VOL ISINK = 5 mA 0.5 0.5 V max DVDD = 5 V |
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