数字电位计AD5142A双电源Vdd=+2.5V,Vss=-2.5V，Vlogic=1.8V，addr0和addr0接地，发送地址0101111，AD5142A不能产生ack信号（I2C应答信号），断开Vss供电后，AD5142A就能应答，与主设备正常通信，

I need to get a Digital Potentiometer (AD5142A) up and running quickly using I2C.  Can anyone point me to an I2C code example initializing and commands for the AD5142?  ad5142a

Thanks!

Hello all,

I'd like to ask you about AD5142A with Divider Mode and Rheostat Mode.
I assume the use of the following.
AD5124 has two potentiometers, one of the potentiometer is Divider Mode, one of the potentiometer is Rheostat Mode.

Q1.
In one of the…

I am asking about the use of the AD5142A as a two channel variable gain resistor on the AD8421 op amp within the app note 1264. Is there any reason not to use this part in the high precision signal processing into a AD7195? The system will not employ…

Hello,

I just designed a moduled AGC-circuit. Amongst other things there is a fixed gain module and an adjustable attenuation moduel (AD5142A).

I got problems with the attenaution module. It's just a AD5142A connected as follows...

Signal goes…

1) Main problem is start AD5142A with wrong numbers in RDAC. INDEP pin =1.

   1 $5E,$14,$CF (I2C Addr, Command+Address, Data) write 207 to Raw1

   2 $5E,$10,$CD     write 205 to Rwb1

   3 $5E,$74,$01 and $5E,$70,$01  (copy to EEPROM)

4 turn off /on power…

Main problem is start AD5142A with wrong numbers in RDAC. INDEP pin =1.

   1 $5E,$14,$CF (I2C Addr, Command+Address, Data) write 207 to Raw1

   2 $5E,$10,$CD     write 205 to Rwb1

   3 $5E,$74,$01 and $5E,$70,$01  (copy to EEPROM)

4 turn off /on power supply…