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ADE7978 数据表(PDF) 17 Page - Analog Devices |
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ADE7978 数据表(HTML) 17 Page - Analog Devices |
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17 / 125 page  Data Sheet ADE7978/ADE7933/ADE7932/ADE7923 Rev. D | Page 17 of 125 ADE7923 SPECIFICATIONS VDD = 3.3 V ± 10%, GND = 0 V, on-chip reference, XTAL1 = 4.096 MHz, TMIN to TMAX = −40°C to +85°C, TTYP = 25°C. Table 10. Parameter1 Min Typ Max Unit Test Conditions/Comments ANALOG INPUTS Pseudo Differential Signal Voltage Range Between IP and IM Pins −31.25 +31.25 mV peak IM pin connected to GND ISO Between V1P and VM Pins and Between V2P and VM Pins −500 +500 mV peak Pseudo differential inputs between V1P and VM pins and between V2P and VM pins, VM pin connected to GND ISO Maximum VM and IM Voltage −25 +25 mV Crosstalk −90 dB IP and IM inputs set to 0 V (GND ISO), V1P and V2P inputs at full scale −105 dB V2P or V1P and VM inputs set to 0 V (GND ISO), IP and V1P or V2P inputs at full scale Input Impedance to GND ISO (DC) IP, IM, V1P, and V2P Pins 480 kΩ VM Pin 280 kΩ Current Channel ADC Offset Error −2 mV Voltage Channel ADC Offset Error −35 mV V1 and V2 channels ADC Offset Drift over Temperature ±200 ppm/°C V1 channel only Gain Error −4 +4 % Gain Drift over Temperature −135 +135 ppm/°C Current channel −85 +85 ppm/°C V1 and V2 channels AC Power Supply Rejection −90 dB VDD = 3.3 V + 120 mV rms at 50 Hz/100 Hz, IP = V1P = V2P = GND ISO DC Power Supply Rejection −80 dB VDD = 3.3 V ± 330 mV dc, IP = 6.25 mV rms, V1P = V2P = 100 mV rms TEMPERATURE SENSOR Accuracy ±5 °C CLOCK INPUT All specifications for XTAL1 = 4.096 MHz Input Clock Frequency, XTAL1 3.6 4.096 4.21 MHz Nominal value provided by the ADE7978, minimum and maximum values apply when the AD7923 are used without the ADE7978 XTAL1 Duty Cycle 45 50 55 % Values apply when the AD7923 are used without the ADE7978 XTAL1 Logic Inputs Input High Voltage, V INH 2.4 V Input Low Voltage, V INL 0.8 V XTAL1 Total Capacitance2 40 pF XTAL2 Total Capacitance2 40 pF LOGIC INPUTS—SYNC, V2/TEMP, RESET_EN Input High Voltage, V INH 2.4 V Input Low Voltage, V INL 0.8 V Input Current, I IN 0.015 1 µA Input Capacitance, C IN 10 pF LOGIC OUTPUTS—DATA Output High Voltage, V OH 2.5 V I SOURCE = 800 µA Output Low Voltage, V OL 0.4 V I SINK = 2 mA |
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