ADE7752ARZ Analog Devices Inc, ADE7752ARZ Datasheet
ADE7752ARZ
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ADE7752ARZ Summary of contents
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FEATURES High accuracy, supports 50 Hz/60 Hz IEC62053-2x Less than 0.1% error over a dynamic range of 500 to 1 Compatible with 3-phase/3-wire delta and 3-phase/4-wire Wye configurations 1 The ADE7752 supplies average real power on frequency outputs F1 and ...
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ADE7752/ADE7752A TABLE OF CONTENTS Specifications..................................................................................... 3 Timing Characteristics..................................................................... 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ............................................. 8 Test Circuit ...................................................................................... 10 Terminology .................................................................................... 11 Theory of Operation ...................................................................... 12 Power ...
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SPECIFICATIONS ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 10 MHz Table 1. Parameter Min 1, 2 ACCURACY Measurement Error on Current Channel Phase Error Between Channels PF = 0.8 ...
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ADE7752/ADE7752A TIMING CHARACTERISTICS ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 10 MHz Table 2. Parameter Conditions and F2 Pulse Width (Logic High Output Pulse ...
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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 VAP, VBP, VCP, VN, IAP, IAN, IBP, IBN, ICP, and ICN Reference Input Voltage ...
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ADE7752/ADE7752A PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 CF Calibration Frequency Logic Output. The CF logic output gives instantaneous real power information. This output is intended to be used for calibration purposes. ...
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Pin No. Mnemonic Description 19 CLKIN Master Clock for ADCs and Digital Signal Processing. An external clock can be provided at this logic input. Alternatively, a parallel resonant AT crystal can be connected across CLKIN and CLKOUT to provide a ...
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ADE7752/ADE7752A TYPICAL PERFORMANCE CHARACTERISTICS 0.5 WYE CONNECTION ON-CHIP REFERENCE 0.4 0.3 PHASE C 0.2 0.1 PHASE B 0 –0.1 –0.2 –0.3 –0.4 –0.5 0.1 1 CURRENT CHANNEL (% of Full Scale) Figure 4. Error as a Percent of Reading with ...
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WYE CONNECTION ON-CHIP REFERENCE 0.4 0 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0 FREQUENCY (Hz) Figure 10. Error as a Percent of Reading over Frequency with an Internal Reference (Wye Connection) ...
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ADE7752/ADE7752A TEST CIRCUIT 1MΩ 220V 1kΩ 100nF 10μ LOAD ABS DD 1kΩ IAP ADE7752/ 33nF RB ADE7752A 1kΩ IAN 33nF CLKOUT 20 IBP 7 SAME AS ...
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TERMINOLOGY Measurement Error The error associated with the energy measurement made by the ADE7752 is defined by the following formula: ⎧ Energy Registered by ADE = ⎨ Percentage Error ⎩ True Energy Error Between Channels The high-pass filter (HPF) in ...
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ADE7752/ADE7752A THEORY OF OPERATION The six voltage signals from the current and voltage transducers are digitized with ADCs. These ADCs are 16-bit second-order ∑-Δ with an oversampling rate of 833 kHz. This analog input structure greatly simplifies transducer interface by ...
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This is the correct real power calculation. INSTANTANEOUS POWER SIGNAL V× CURRENT VOLTAGE INSTANTANEOUS POWER SIGNAL V× I × cos(60° VOLTAGE 60° Figure 16. DC Component of Instantaneous Power Signal Conveys Real Power Information PF ...
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ADE7752/ADE7752A ANALOG INPUTS CURRENT CHANNELS The voltage outputs from the current transducers are connected to the ADE7752 current channels, which are fully differential voltage inputs. IAP, IBP, and ICP are the positive inputs for IAN, IBN, and ICN, respectively. The ...
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TYPICAL CONNECTION DIAGRAMS CURRENT CHANNEL CONNECTION Figure 19 shows a typical connection diagram for the current channel (IA). A current transformer (CT) is the current trans- ducer selected for this example. Notice the common-mode voltage for the current channel is ...
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ADE7752/ADE7752A Figure 21 shows the connections of the analog inputs of the ADE7752 with the power lines in a 3-phase 3-wire delta service. Note that only two current inputs and two voltage inputs of the ADE7752 are used in this ...
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POWER SUPPLY MONITOR The ADE7752 contains an on-chip power supply monitor. The power supply ( continuously monitored by the ADE7752 the supply is less than 4 V ± 5%, the outputs of the ADE7752 are inactive. ...
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ADE7752/ADE7752A DIGITAL-TO-FREQUENCY CONVERSION After multiplication, the digital output of the low-pass filter contains the real power information of each phase. Because this LPF is not an ideal brick wall filter implementation, however, the output signal also contains attenuated components at ...
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MODE SELECTION OF THE SUM OF THE THREE ACTIVE ENERGIES The ADE7752 can be configured to execute the arithmetic sum of the three active energies ϕA sum of the absolute value of these energies |Wh ...
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ADE7752/ADE7752A TRANSFER FUNCTION FREQUENCY OUTPUTS F1 AND F2 The ADE7752 calculates the product of six voltage signals (on current channel and voltage channel) and then low-pass filters this product to extract real power information. This real power information is then ...
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As the voltage and current inputs respect Equations 5 and 6, the total real power ( − − + − ⎛ ...
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ADE7752/ADE7752A SELECTING A FREQUENCY FOR AN ENERGY METER APPLICATION As shown in Table 5, the user can select one of seven frequen- cies. This frequency selection determines the maximum frequency on F1 and F2. These outputs are intended to be ...
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NEGATIVE POWER INFORMATION The ADE7752 detects when the current and voltage channels of any of the three phase inputs have a phase difference greater than 90°: ϕ or ϕ or ϕ > 90°. This mechanism can detect ...
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... OUTLINE DIMENSIONS 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 ORDERING GUIDE Model Temperature Range ADE7752AR -40° 85°C ADE7752ARRL -40° 85°C 1 ADE7752ARZ -40° 85°C 1 ADE7752ARZ-RL -40° 85°C ADE7752AAR -40° 85°C ADE7752AAR-RL -40° 85°C 1 ADE7752AARZ -40° 85°C 1 ADE7752AARZ-RL -40° 85°C EVAL-ADE7752EB EVAL-ADE7752AEB Pb-free part. ...