Datasheet ADE7755 (Analog Devices) - 9

Data Sheet ADE7755 0.8 0.4 PF = 0.5 PF = 1 GAIN = 8 GAIN = 16 0.6 ON-CHIP REFERENCE 0.3 EXTERNAL REFERENCE –40°C PF = 0.5 –40°C 0.4 0.2 0.2 0.1 %) %) +25°C PF = 1 +25°C R ( R ( 0 0 RRO RRO E E –0.2 +25°C PF = 0.5 –0.1 +85°C –0.4 –0.2 +85°C PF = 0.5 –0.6 –0.3 –0.8 –0.4 0.01 0.1 1 10 100
010
0.01 0.1 1 10 100
013
FULL-SCALE CURRENT (%) FULL-SCALE CURRENT (%)
02896- 02896- Figure 10. Error as a % of Reading (Gain = 8) Figure 13. Error as a % of Reading over Temperature with an External Reference (Gain = 16)
0.4 0.8 0.2 –40°C PF = 0.5 0.6 PF = 1 0 0.4 +25°C PF = 1 %) –0.2 %) 0.2 R ( +25°C PF = 0.5 R ( PF = 0.5 RRO –0.4 RRO 0 E E +85°C PF = 0.5 –0.6 –0.2 –0.8 PF = 0.5 –0.4 GAIN = 16 ON-CHIP REFERENCE –1.0 –0.6 0.01 0.1 1 10 100
011
45 50 55 60 65 70 75
014
FULL-SCALE CURRENT (%) FREQUENCY (Hz)
02896- 02896- Figure 11. Error as a % of Reading (Gain = 16) Figure 14. Error as a % of Reading over Frequency
0.4 VDD PF = 1 0.3 GAIN = 2 EXTERNAL REFERENCE 10µF 100nF 100nF 10µF 3 2 1 40A TO 0.2 40mA AV U3 K7 DD AC/DC DVDD –40°C 24 1 4 1kΩ 4 NC F1 0.1 5 V1P F2 23 U1 %) 500µΩ +25°C 1.5mΩ 33nF ADE7755 CF 22 R ( 2 3 0 10mΩ 1kΩ REVP 20 6 V1N K8 RRO PS2501-1 33nF NC 19 E 33pF –0.1 CLKOUT 18 +85°C 1kΩ 7 V2N Y1 33pF 3.58MHz –0.2 33nF CLKIN 17 V 1MΩ DD G0 8 V2P 16 GAIN –0.3 33nF 220V G1 SELECT 1kΩ 15 10kΩ S0 14 –0.4 10 REF 0.01 0.1 1 10 100
012
IN/OUT S1 13 10µF 100nF FULL-SCALE CURRENT (%)
02896-
SCF 12 10nF 10nF 10nF
Figure 12. Error as a % of Reading over Temperature with an External
RESET AGND DGND 9
Reference (Gain = 2)
11 21 NC = NO CONNECT
015
VDD
02896- Figure 15. Test Circuit for Performance Curves Rev. B | Page 9 of 20 Document Outline Features General Description Functional Block Diagram Revision History Specifications Timing Characteristics Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Power Factor Considerations Nonsinusoidal Voltage and Current Analog Inputs Channel 1 (Current Channel) Channel 2 (Voltage Channel) Typical Connection Diagrams Power Supply Monitor HPF and Offset Effects Digital-to-Frequency Conversion Interfacing the ADE7755 to a Microcontroller for Energy Measurement Power Measurement Considerations Transfer Function Frequency Outputs F1 and F2 Example 1 Example 2 Frequency Output CF Selecting a Frequency for an Energy Meter Application Frequency Outputs No Load Threshold Outline Dimensions Ordering Guide