Does anyone have any experience reading from the AD8403 over the SPI bus?  I'd like to verify my writes are indeed working.

Hi

We want to use the AD8403-1K part for my led current control application, We have few questions as below

1) I want to use VDD voltage as 3.3V, but LED Supply as the 5V between Ra and Rw, Can it be possible? Rb we will connect to the ground.

2) Can…

Hi

I am trying to communicate to the AD8403 Evaluation board via SDP-B platform. I have received an evaluation software with the board which works fine. I would like to communicate to the board via VB.net script and hence I am using the sdpapi1.dll…

Dear sir/mam,

        As i am working interfacing ARM and AD8403 IC(digital potentiometer),i am measure resistance value,what i am doing is from ARM i am sending data through SPI every 20sec data i am tranmitting,and AD8403 IC what i am sending it will give…

Hello.

I wish to know what is the Resistance range of the AD8403 IC that exists on the AD8403 Evaluation board (the EVAL-AD8403SDZ).
Is It 1K Ohm? 

最近在用AD8403这款数字电位器，但是遇到了一些问题希望得到解决。
1、定位器输出的电阻可不可以在通电的状态下用万用表来测量。
2、用万用表测量发现电阻不准，10k的测量出来却只有9.2k而且不稳地。
3、线性不是太好，每次步进的阻值相差较多

        AD620放大带有2v偏置的交流小信号（几十mv，频率在100hz左右），单片机STM32控制可编程电阻器AD8403调节AD620的放大倍数，AD620输出前和输出后的rc滤波器去除交流小信号的2v直流偏置，具体电路如下图，

电路设计出来遇到的问题：1、AD620的增益跟调节预期相差很大；

                                          2、AD620所能放大的信号频率只有400HZ不到，跟手册上所说的带宽严重不符；

                                          3、当IN+无输入时，out端有1v的直流电压输出，即使IN+和IN-短接接到地还是有1V的电压输出。

        目前…

Hello,

I am using AD8403 for Analog output. I want to get 4 different frequencies analog outputs simultaneously from that IC. Is it possible? please let me know 

Thanks and Regards 

Thippeswamy H U