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AD5252 no output reflected on wiper terminal

Question asked by Lingaraj on May 29, 2017
Latest reply on Jun 8, 2017 by Lingaraj

Hi,

 

                 I'm trying to interface AD5252 B1(1 K) variant chip to replace a mechanical potentio-meter. I'm Using I2C to interface AD5252 with a controller. I can able to read & write using I2C on the AD5252 chip. The issue is that i cannot see any change on the wiper terminal of the chip after writing the 0x01 (RDAC1) & 0x03 (RDAC3) registers with a data bit data between 0 to 255.

 

whenever i read the 0x01 register i see only 128 always.

 

connections :

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Grounded AD0 & AD1 pins to use i2c slave address as 0x58 for write & 0x59 for read.

A1 is pulled to high & B1 is connected to gnd.

 

Please anyone help me on this issue.

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