ADE7752BARW AD [Analog Devices], ADE7752BARW Datasheet
ADE7752BARW
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ADE7752BARW Summary of contents
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Preliminary Technical Data FEATURES High accuracy supports 50 Hz/60 Hz IEC62053-21 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 Supplies average active power on the frequency ...
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ADE7752B TABLE OF CONTENTS Features .............................................................................................. 1 General Description ......................................................................... 1 Table of Contents .............................................................................. 2 Specifications..................................................................................... 3 Timing Characteristics ................................................................ 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 9 ...
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Preliminary Technical Data SPECIFICATIONS ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 10 MHz Table 1. Parameter Conditions 1, 2 ACCURACY Measurement Error on Voltage channel with full-scale signal (±500 ...
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ADE7752B Parameter Conditions LED_A, LED_B, LED_C Output Low 4.75 V SINK DD Output High Source POWER SUPPLY For specified performance ± See the Terminology ...
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Preliminary Technical Data TIMING CHARACTERISTICS ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 10 MHz Table 2. 1,2 Parameter Conditions and F2 pulse width (logic high) 1 ...
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ADE7752B 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 ...
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Preliminary Technical Data 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 active power information. This output is intended to be used for ...
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ADE7752B Pin No. Mnemonic Description 20 CLKOUT A crystal can be connected across this pin and CLKIN as described previously to provide a clock source for the ADE7752B. The CLKOUT pin can drive one CMOS load when an external clock ...
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Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS Figure 4. Error as a Percent of Reading with Internal Reference (Wye Connection) Figure 5. Error as a Percent of Reading over Power Factor with Internal Reference (Wye Connection) Figure 6. Error as a ...
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ADE7752B Figure 10. Error as a Percent of Reading over Frequency with an Internal Reference (Wye Connection) Figure 11. Error as a Percent of Reading over Power Supply with External Reference (Wye Connection) Preliminary Technical Data Figure 12. Channel 1 ...
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Preliminary Technical Data TERMINOLOGY Measurement Error The error associated with the energy measurement made by the ADE7752B is defined by the following formula: ⎧ Energy Registered by ADE = Percentage Error ⎨ True Energy ⎩ Error between Channels The high-pass ...
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ADE7752B TEST CIRCUIT 1MΩ 220V 1kΩ 100nF 10μ LOAD ABS DD 1kΩ IAP 33nF ADE7752B RB 1kΩ IAN 33nF CLKOUT 20 IBP 7 SAME AS IAP, ...
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Preliminary Technical Data THEORY OF OPERATION The six 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 ...
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ADE7752B This is the correct active 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 NONSINUSOIDAL VOLTAGE ...
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Preliminary Technical Data ANALOG INPUTS CURRENT CHANNELS The voltage outputs from the current transducers are connected to the ADE7752B current channels, which are fully differential voltage inputs. IAP, IBP, and ICP are the positive inputs for IAN, IBN, and ICN, ...
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ADE7752B 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 ...
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Preliminary Technical Data Figure 21 shows the connections of the ADE7752B analog inputs with the power lines in a 3-phase 3-wire delta service. Cf Ra* Rb* VR* Rb* ANTIALIASING FILTERS CT PHASE A PHASE C SOURCE Rf CT PHASE B ...
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ADE7752B POWER SUPPLY MONITOR The ADE7752B contains an on-chip power supply monitor. The power supply ( monitored continuously by the ADE7752B power up, when the supply is less than 4V ±2% and V than 1.9 V ...
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ADE7752B HPF AND OFFSET EFFECTS Figure 24 shows the effect of offsets on the active power calculation. An offset on the current channel and voltage channel contributes a dc component after multiplication as shown in Figure 24. Since this dc ...
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ADE7752B DIGITAL-TO-FREQUENCY CONVERSION After multiplication, the digital output of the low-pass filter contains the active power information of each phase. However, since this LPF is not an ideal brick wall filter implementation, the output signal also contains attenuated components at ...
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Preliminary Technical Data POWER MEASUREMENT CONSIDERATIONS Calculating and displaying power information always have some associated ripple that depends on the integration period used in the MCU to determine average power as well as the load. For example, at light loads, ...
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ADE7752B TRANSFER FUNCTION FREQUENCY OUTPUTS F1 AND F2 The ADE7752B calculates the product of six voltage signals (on current channel and voltage channel) and then low-pass filters this product to extract active power information. This active power information is then ...
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Preliminary Technical Data Example 3 In this example, the ADE7752B is connected to a 3-phase 3- wire delta service as shown in Figure 21. The total active energy calculation processed in the ADE7752B can be expressed as Total Active Power ...
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Preliminary Technical Data SELECTING A FREQUENCY FOR AN ENERGY METER APPLICATION As shown in Table 5, the user can select one of seven frequencies. This frequency selection determines the maximum frequency on F1 and F2. These outputs are intended to ...
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Preliminary Technical Data Table 10. CF, F1, and F2 Minimum Frequency at No Load Threshold SCF S1 S0 F1, F2 Minimum (Hz 6.94E − 1.39E − 3.47E − 05 ...
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... ADE7752B OUTLINE DIMENSIONS 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 ORDERING GUIDE Model 1 ADE7752BARWZ 1 ADE7752BARWZ-RL ADE7752BARW ADE7752BARW-RL EVAL-ADE7752BEB Pb-free part small outline wide body package in tubes. 15.60 (0.6142) 15.20 (0.5984 7.60 (0.2992) 7.40 (0.2913 2.65 (0.1043) 2.35 (0.0925) 1.27 (0.0500) 0.51 (0.020) SEATING 0.33 (0.0130) PLANE BSC 0.31 (0.012) 0.20 (0.0079) COMPLIANT TO JEDEC STANDARDS MS-013-AD CONTROLLING DIMENSIONS ARE IN MILLIMETERS ...
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Preliminary Technical Data NOTES © 2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR05905-0-1/06(PrA) Rev. PrA | Page ADE7752B ...