ADE7768AR-RL Analog Devices Inc, ADE7768AR-RL Datasheet
ADE7768AR-RL
Specifications of ADE7768AR-RL
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ADE7768AR-RL Summary of contents
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FEATURES On-chip oscillator as clock source High accuracy, supports 50 Hz/60 Hz IEC62053-21 Less than 0.1% error over a dynamic range of 500 to 1 Supplies positive-only average real power on frequency outputs F1 and F2 High frequency output CF ...
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ADE7768 TABLE OF CONTENTS Specifications..................................................................................... 3 Timing Characteristics ................................................................ 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Terminology ...................................................................................... 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 8 Functional Description .................................................................. 10 Theory of Operation .................................................................. 10 ...
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SPECIFICATIONS ± 5%, AGND = DGND = 0 V, on-chip reference, RCLKIN = 6.2 kΩ, 0.5% ± 50 ppm/° unless otherwise noted. Table 1. Parameter , ACCURACY 1 2 Measurement Error on Channel V1 ...
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ADE7768 Parameter POWER SUPPLY See the Terminology section for an explanation of specifications. 2 See the figures in the Typical Performance Characteristics section. 3 Sample tested during initial release and after any redesign or process ...
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ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V to AGND DGND DD Analog Input Voltage to AGND, V1P, V1N, V2P, and V2N Reference Input Voltage to AGND Digital Input Voltage to ...
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ADE7768 TERMINOLOGY Measurement Error The error associated with the energy measurement made by the ADE7768 is defined by the following formula: Energy Registered by ADE 7768 = % Error True Energy Phase Error Between Channels The high-pass filter (HPF) in ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 V Power Supply. This pin provides the supply voltage for the circuitry in the ADE7768. The supply voltage DD should be maintained ...
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ADE7768 TYPICAL PERFORMANCE CHARACTERISTICS 220V 40A TO 350μΩ 1 0.8 ON-CHIP REFERENCE 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0.1 1 CURRENT CHANNEL (% of Full Scale) Figure 5. Error Reading ...
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PF = 0.5 IND 0.1 0 –0.1 –0 0.5 CAP –0.3 –0.4 –0 FREQUENCY (Hz) Figure 9. Error Reading over Input Frequency 1.0 ...
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ADE7768 FUNCTIONAL DESCRIPTION THEORY OF OPERATION The two ADCs in the ADE7768 digitize the voltage signals from the current and voltage sensors. These ADCs are 16-bit Σ-Δs with an oversampling rate of 450 kHz. This analog input structure greatly simplifies ...
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Nonsinusoidal Voltage and Current The real power calculation method also holds true for non- sinusoidal current and voltage waveforms. All voltage and current waveforms in practical applications have some harmonic content. Using the Fourier transform, instantaneous voltage and current waveforms ...
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ADE7768 Typical Connection Diagrams Figure 20 shows a typical connection diagram for Channel V1. A shunt is the current sensor selected for this example because of its low cost compared to other current sensors, such as the current transformer (CT). ...
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FREQUENCY (Hz) Figure 25. Phase Error Between Channels ( Hz) Digital-to-Frequency Conversion As previously described, the digital output of the low-pass filter after multiplication ...
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ADE7768 CF FREQUENCY RIPPLE AVERAGE FREQUENCY TIME ADE7768 CF Figure 27. Interfacing the ADE7768 to an MCU As shown in Figure 27, the frequency output CF is connected to an MCU counter or port. This counts the number of pulses ...
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Table 5. F Frequency Selection 1– OSC Relation F at Nominal OSC (Hz) 1– OSC/2 0. OSC/2 1. OSC/2 3. OSC/2 6. ...
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... An evaluation board can be used to verify the functionality and the performance of the ADE7768. Download documentation for the board from In addition, the reference design board ADE7768ARN-REF and Application Note AN-679 can be used in the design of a low cost watt-hour meter that surpasses IEC62053-21 accuracy specifications. Download the application note from http://www.analog.com/ADE7768. is always 35 μ ...
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... PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN ORDERING GUIDE Model Temperature Range ADE7768AR −40°C to +85°C ADE7768AR-RL −40°C to +85°C 1 ADE7768ARZ −40°C to +85°C 1 ADE7768ARZ-RL −40°C to +85°C ...
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ADE7768 NOTES Rev Page ...
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NOTES Rev Page ADE7768 ...
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ADE7768 NOTES © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05331–0–8/05(A) Rev Page ...