AD71056_15 datasheet(8/20 Pages) AD

Part #	AD71056

Description	Energy Metering IC with Integrated Oscillator and Reverse Polarity Indication

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Manufacturer	AD [Analog Devices]

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AD71056

Rev. A | Page 8 of 20

TYPICAL PERFORMANCE CHARACTERISTICS

6.2kΩ

V2N

200Ω

220V

150nF

V2P

200Ω

602kΩ

V1P

V1N

350µΩ

40A TO

40mA

REFIN/OUT

100nF

1µF

100nF

10µF

VDD

DGND

F1

F2

CF

REVP

RCLKIN

S0

S1

SCF

10nF

U3

PS2501-1

K7

K8

U1

AD71056

10kΩ

VDD

200Ω

150nF

AGND

150nF

VDD

+

820Ω

2

3

5

4

7

6

13

1

16

15

14

12

11

10

9

8

1

4

2

3

Figure 4. Test Circuit for Performance Curves

–1.0

–0.8

–0.6

–0.4

–0.2

0

0.2

0.4

0.6

CURRENT CHANNE L (% of Full Scale)

0.1

10

1

100

0.8

1.0

+25°C

+85°C

–40°C

PF = 1

ON-CHIP REFERENCE

Figure 5. Error as a % of Reading over Temperature with

On-Chip Reference (PF = 1)

–1.0

–0.8

–0.6

–0.4

–0.2

0

0.2

0.4

0.6

CURRENT CHANNE L (% of Full Scale)

0.1

10

1

100

0.8

1.0

+85°C, PF = 0.5 IND

+25°C, PF = 1

–40°C, PF = 0.5 IND

+25°C, PF = 0.5 IND

PF = 0.5 IND

ON-CHIP REFERENCE

Figure 6. Error as a % of Reading over Temperature with

On-Chip Reference (PF = 0.5 IND)

–1.0

–0.8

–0.6

–0.4

–0.2

0

0.2

0.4

0.6

CURRENT CHANNE L (% of Full Scale)

0.1

10

1

100

0.8

1.0

+25°C

+85°C

–40°C

PF = 1

EXTERNAL REFERENCE

Figure 7. Error as a % of Reading over Temperature with

External Reference (PF = 1)

–1.0

–0.8

–0.6

–0.4

–0.2

0

0.2

0.4

0.6

CURRENT CHANNE L (% of Full Scale)

0.1

10

1

100

0.8

1.0

+85°C, PF = 0.5 IND

+25°C, PF = 1

+25°C, PF = 0.5 IND

–40°C, PF = 0.5 IND

PF = 0.5 IND

EXTERNAL REFERENCE

Figure 8. Error as a % of Reading over Temperature with

External Reference (PF = 0.5 IND)

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