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AD7750AN Scheda tecnica(PDF) 2 Page - Analog Devices |
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AD7750AN Scheda tecnica(HTML) 2 Page - Analog Devices |
2 / 16 page –2– REV. 0 AD7750–SPECIFICATIONS (VDD = 5 V 5%, AGND = 0 V, DGND = 0 V, REFIN = +2.5 V, CLKIN = 3.58 MHz TMIN to TMAX = –40 C to +85 C, ACDC = Logic High) A Version –40 C to Parameter +85 C Units Test Conditions/Comments ACCURACY Measurement Error 1 Channel 2 with Full-Scale Signal Gain = 1 0.2 % Reading max Measured Over a Dynamic Range on Channel 1 of 500:1 0.3 % Reading max Measured Over a Dynamic Range on Channel 1 of 1000:1 Gain = 16 0.2 % Reading max Measured Over a Dynamic Range on Channel 1 of 500:1 0.4 % Reading max Measured Over a Dynamic Range on Channel 1 of 1000:1 Phase Error Between Channels CLKIN = 3.58 MHz, Line Frequency = 50 Hz Phase Lead 40 ° (PF = +0.8) ±0.2 Degrees ( °) max HPF Filter On, ACDC = 1 Phase Lag 60 ° (PF = –0.5) ±0.2 Degrees ( °) max HPF Filter On, ACDC = 1 Feedthrough Between Channels HPF Filter On, ACDC = 1, Mode 3, Channel 1 = 0 V Output Frequency Variation (FOUT) 0.0005 % Full-Scale max Channel 2 = 500 mV rms at 50 Hz Power Supply Rejection HPF Filter On, ACDC = 1, Mode 3, Channel 1 = 0 V Output Frequency Variation (FOUT) 0.03 % Full-Scale max Channel 2 = 500 mV rms, Power Supply Ripple 250 mV at 50 Hz. See Figures 1 and 3. ANALOG INPUTS Maximum Signal Levels ±1 V max On Any Input, V1+, V1–, V2+ and V2–. See Analog Inputs. Input Impedance (DC) 400 k Ω min CLKIN = 3.58 MHz Bandwidth 3.5 kHz typ CLKIN = 3.58 MHz, CLKIN/1024 Offset Error ±10 mV typ Gain Error ±4 % Full-Scale typ Gain Error Match ±0.3 % Full-Scale typ REFERENCE INPUT REFIN Input Voltage Range 2.7 V max 2.5 V + 8% 2.3 V min 2.5 V – 8% Input Impedance 50 k Ω min ON-CHIP REFERENCE Nominal 2.5 V Reference Error ±200 mV max Temperature Coefficient 55 ppm/ °C typ CLKIN Input Clock Frequency 4.5 MHz max 2 MHz min LOGIC INPUTS FS, S1, S2, ACDC and G1 Input High Voltage, VINH 2.4 V min VDD = 5 V ± 5% Input Low Voltage, VINL 0.8 V max VDD = 5 V ± 5% Input Current, IIN ±10 µA max Typically 10 nA, VIN = 0 V to VDD Input Capacitance, CIN 10 pF max CLKIN Input High Voltage, VINH 4 V min Input Low Voltage, VINL 0.4 V max LOGIC OUTPUTS 2 F1 and F2 Output High Voltage, VOH ISOURCE = 8 mA 4.3 V min VDD = 5 V Output Low Voltage, VOL ISINK = 8 mA 0.5 V max VDD = 5 V FOUT and REVP Output High Voltage, VOH ISOURCE = 1 mA 4 V min VDD = 5 V ± 5% Output Low Voltage, VOL ISINK = 200 µA 0.4 V max VDD = 5 V ± 5% High Impedance Leakage Current ±10 µA max High Impedance Capacitance 15 pF max |
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