• AD5663 output opamp

    Is it possible to disable and bypass the internal opamps that buffer the outputs of the AD5663? 

    I am trying to reduce power and noise.

    There are many undocuments "reserved" commands in the datasheet, just curious why they are not documented and what they…

  • AD5663 output with large spur

    the input clk period = sclk =40Mhz

    the timing set as the pic upside, and I set the input data rate synchronized with the DAC output as 40M/253clk=158.1Khz,

    the verilog code is as below

    //clk_in ==  40Mhz
    module AD5663R(
    	input clk_in,
    	input [15:0…

  • Connecting the output of AD5663 to ADRF6520 will produce Gibbs effect. How to eliminate this effect?

    Connecting the output of AD5663 to ADRF6520 will produce Gibbs effect. How to eliminate this effect?
    Existing problems:
             When the output change range of AD5663 is large, such as from 0.2V to 1.2V, or 1.2V to 0.2V, the voltage output pin of AD5663 will…

  • how do i use the AD5663 Device?

    hello

    i am trying to use ad5663 device to control the output voltage.

    but i have a problem. it's not working .

    the output of the device is 0V. always.

    i did LDAC low, CLR high. control SYNC, DIN,SCLK

    Send Powerdown normal mode command. and write…

  • RE: Controlling an AD5663 with a BF547's SPI Bus

    This question has been closed by the EZ team and is assumed answered.
  • AD5663无故复位

    问题:AD5663R无缘无故的没有电压输出了

    出现频率:有时几天1次,有时几个月一次,有时1天几次

    PCB结构:一个大板上插了8个一模一样的小板,电源是从大板供到小板。

                     AD5663R就是在小板上,小板上还有 ATmega16L、AD7705等;

                     小板上有信号接口与示波器连接。

                    在8个板上都出现过AD5663R无电压输出(不是8个板同时出现状况,没有规律可寻)

                  

    已经实施过的检查:

    ①掉电引起的复位-----因为PCB上还有MCU,AD7705等都不会出现复位,所以排除了电源掉电…

  • AD5663 - How do I use it?

    I'm trying to initialize ad5663 but I get 0 volts on the exit.

    Here's my code that I use:

    GpioWrite(SPI_CS, true);
    GpioWrite(DAC_CLR, true);
    GpioWrite(DAC_LDAC, false);

    // cmd = 0b011          - write cmd of "Write to and update DAC channel n"
  • RE: 21489 SPI Interface to AD5663- SPI Frame Delay

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • AD5663设计问题

    现在使用一款AD5663的DAC芯片,芯片/LDAC强制接地,/CLR接电源正极(5V),SPI通讯波形示波器查看正常,

      现在问题是:

      软件流程为:

      1、/SYNC置高(手动操作,使用IO口配置),之后/SYNC变低(手动操作,使用IO口配置),发软件复位命令0X2F0000;

      2、/SYNC置高(手动操作,使用IO口配置),之后/SYNC变低(手动操作,使用IO口配置),发POWER DOWN命令0X200001;

    3、/SYNC置高(手动操作,使用IO口配置),之后/SYNC变低…

  • AD5663问题

    AD5663为啥需要一直写入才能输出电压?正常芯片不是只配置一两次就可以稳定输出电压了吗?