ADE7751ARS Analog Devices Inc, ADE7751ARS Datasheet
ADE7751ARS
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ADE7751ARS 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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... 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- Reel EVAL-ADE7751EB ADE7751 Evaluation Board + 0.3 V ...
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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 ...