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ad5422 비정상 동작

hello

The AD5422 is in use and the part is acting abnormally.

It works normally at first, but then suddenly breaks down.

I set the setting to output ±10V, but 11.5V is output and

Negative voltage is not output. Please refer to the table

no pin normal ad5422 Abnormal ad5422
1 AVDD 11.61V 11.61V
2 AVSS 12.4V 12.4V
3 DVDD 4.58V 4.57V
4 CLEAR 0V 0V
5 +VSENSE 10V 11.49V
6 VOUT 10V 11.49V
7 CMP 3.41V 1.99V
9 REFOUT 5V 5V
10 REFIN 5V 5V

 

no

division

item

output

setting

1CH

2CH

3CH

4CH

5CH

6CH

note

1

sample

A.O

-10V

-9.77V

0.2V

-9.77V

-9.77V

0.21V

-9.77V

 

2

-9V

-8.87V

1.12V

-8.88V

-8.88V

1.22V

-8.88V

 

3

-8V

-7.84V

2.18V

-7.85V

-7.86V

2.18V

-7.86V

 

4

-7V

-6.86V

3.15V

-6.86V

-6.87V

3.1V

-6.87V

 

5

-6V

-5.88V

4.13V

-5.88V

-5.88V

4.13V

-5.89V

 

6

-5V

-4.88V

5.12V

-4.88V

-4.88V

5.07V

-4.88V

 

7

-4V

-3.95V

6.05V

-3.95V

-3.95V

6.1V

-3.95V

 

8

-3V

-2.98V

7.08V

-2.98V

-2.98V

7.06V

-2.98V

 

9

-2V

-2.01V

8.04V

-2.01V

-2.01V

7.99V

-2.01V

 

10

-1V

-1.01V

9V

-1.01V

-1.01V

9.02V

-1.01V

 

11

0V

0.02V

10.01V

0.02V

0.02V

10.02V

0.02V

 

12

1V

1.02V

11V

1.02V

1.02V

11V

1.02V

 

13

2V

2.02V

11.53V

2.02V

2.02V

11.53V

2.02V

 

14

3V

3.01V

11.53V

3.01V

3.01V

11.53V

3.01V

 

15

4V

3.94V

11.53V

3.94V

3.94V

11.53V

3.94V

 

16

5V

4.98V

11.53V

4.98V

4.99V

11.53V

4.99V

 

17

6V

5.92V

11.53V

5.92V

5.92V

11.53V

5.93V

 

18

7V

6.89V

11.53V

6.89V

6.89V

11.53V

6.9V

 

19

8V

7.88V

11.53V

7.88V

7.88V

11.53V

7.88V

 

20

9V

8.85V

11.53V

8.85V

8.85V

11.53V

8.86V

 

21

10V

9.74V

11.53V

9.74V

9.74V

11.53V

9.75V