ADE7751AN Analog Devices Inc, ADE7751AN Datasheet
ADE7751AN
Specifications of ADE7751AN
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ADE7751AN Summary of contents
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FEATURES High Accuracy, Surpasses 50 Hz/60 Hz IEC 687/1036 Less than 0.1% Error over a Dynamic Range of 500 to 1 Supplies Average Real Power on the Frequency Outputs F1 and F2 High-Frequency Output CF Is Intended for Calibration ...
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ADE7751–SPECIFICATIONS Parameter 3 ACCURACY 1 Measurement Error on Channels 1 and 2 Gain = 1 Gain = 2 Gain = 8 Gain = 16 1 Phase Error between Channels V1 Phase Lead 37 (PF = 0.8 Capacitive) V1 Phase Lag ...
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Parameter 4 LOGIC OUTPUTS F1 and F2 Output High Voltage Output Low Voltage CF, FAULT, and REVP Output High Voltage Output Low Voltage POWER SUPPLY ...
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... ADE7751 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. ORDERING GUIDE Model Package Description ADE7751AN Plastic DIP ADE7751ARS Shrink Small Outline Package RS-24 ADE7751ARSRL Shrink Small Outline Package RSRL- ...
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Pin No. Mnemonic Description 1 DV Digital Power Supply. This pin provides the supply voltage for the digital circuitry in the ADE7751. DD The supply voltage should be maintained decoupled with capacitor in parallel ...
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ADE7751 Pin No. Mnemonic Description 13, 14 S1, S0 These logic inputs are used to select one of four possible frequencies for the digital-to-frequency conversion. This offers the designer greater flexibility when designing the energy meter. See Select- ing a ...
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0.40 GAIN = 1 ON-CHIP REFERENCE 0.30 +85 C 0.20 0.10 –40 C 0.00 –0.10 –0.20 –0.30 –0.40 –0.50 0.01 0.10 1.00 AMPS TPC 1. Error Reading (Gain = 1) 0.25 PF ...
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ADE7751 0.20 +25 C PF=1 0.10 0.00 +85 C PF=0.5 –0.10 –0.20 +25 C PF=0.5 –0.30 –0.40 –0. 0.5 GAIN = 8 ON-CHIP REFERENCE –0.60 0.01 0.1 1 AMPS TPC 7. Error Reading (PF ...
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TPC 13. Channel 1 Offset Distribution (Gain = TPC 14. Channel 1 Offset ...
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ADE7751 THEORY OF OPERATION The two ADCs digitize the voltage and current signals from the current and voltage transducers. These ADCs are 16-bit second order sigma-delta converters with an oversampling rate of 900 kHz. This analog input structure greatly simplifies ...
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Using Equations 2 and 3, the real power P can be expressed in terms of its fundamental real power (P power ( where cos ...
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ADE7751 Figure 7 shows two typical connections for Channel V2. The first option uses a PT (potential transformer) to provide complete isola- tion from the mains voltage. In the second option, the ADE7751 is biased around the neutral wire and ...
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FREQUENCY – Hz Figure 11. Phase Error Between Channels ( Hz) DIGITAL-TO-FREQUENCY CONVERSION As previously described, the digital output of the low-pass filter after ...
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ADE7751 V1A V1A V1B V1A AGND V1N 0V V1B V1B V1B < 87.5% OF V1A Figure 13. Fault Conditions for Inactive Input Less than Active Input Fault with V1B Greater than V1A Figure 14 illustrates another fault condition. If V1A ...
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Example 1 If full-scale differential dc voltages of +660 mV and –660 mV are applied to V1 and V2 respectively (660 mV is the maximum differential voltage that can be connected to Channel 1 and Channel 2), the expected output ...
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ADE7751 When selecting a suitable F frequency for a meter design, the 1–4 frequency output at I (maximum load) with a meter constant MAX of 100 imp/kWhr should be compared with Column 4 of Table VI. The frequency that is ...