• AD5721R

    AD5721R fits our application concerning its specifications, 0-10V, +/-10V output etc. but we require the input data rate is higher because the 10 MHz sine wave signal is converted by ADC and after software processing it is convered to analog signal that…

  • How to calculate settling time for DAC?

    Dear Sir:

                    I want to used AD5721R/AD5761R to produce arbitrary waveform (frequency=100kHz , amplitude=0~10V) to drive a device. But , How to calculate this condition (frequency=100kHz , amplitude=0~10V) through settling time? Does AD5721R/AD5761R…

  • AD5721R Circuit Implementation Questions

    I'm hoping that I can just keep posting questions in here as I get them and people with experience with this chip or similar and circuit design can chime in and help.

    So here's the goal.  I will be pairing this chip with a Teensy LC in a vehicle…

  • RE: oscillating output AD5721R

    Hi Jack,

    I forgot to ask, can you also provide oscilloscope shots of the supplies (DVcc, VDD, VSS) when this happens?

    Cheers,

    Ivan

  • [AD5761R/AD5721R]Eval Schematic

    Hello, 

    I would like to make clear about EVAL schematic of AD5761R/AD5721R.

    According to UG-751

    http://www.analog.com/media/en/technical-documentation/user-guides/EVAL-AD5761RSDZ_UG-751.pdf 

    Page 7, pin#9 is connected to GND with CAP.

    But Datasheet…

  • RE: Output voltage range without external operational amplifier on AD7305 and operational sequenceI

    Hi,

    A 12-bit part, AD5721R, is the closest part I can recommend. Is your controller capable of sending 24-bit SPI frame? For which application are you going to use the part?

    Cheers,

    Ivan 

  • For the AD5721R what mode should I select if I use VDD=+5.5V and VSS=-5.5V to generate a  +/-4.5V Vout? Shall I use m=8 and c=4 ( +/-10V range) or m=4 and c=2 ( +/-5V range) ?

    The transfer function is:

    #AD5721R range setup

    Vout can not reach +/- 10V if VDD=+5.5V and VSS=-5.5V. Vout can only reach +/-4.5V due to the 1V drop. But how shall I program RA to get +/-4.5V Vout?

    The documentation states that the register RA is…

  • AD5761/21/R FAQ

    Q1. What external devices does the part require to operate as spec’d in the datasheet?

    A1. The AD5761R/AD5721R are 16-/12-bit Voltage output DAC which integrate a 2.5V 2ppm/˚C typical internal reference as well as reference and output buffers. The…

  • AD5721R芯片SDO管脚输出不正常

         STM32控制AD5721R芯片,DVCC3.3V供电,VDD12V,VSS-12V,RESET浮空,SYNC浮空,CLEAR浮空,ALEART浮空,使用外部参考电压,可以正常控制DAC电压输出,也可以控制DAC寄存器,但读DAC寄存器一直是零,SDO电平一直很低,见附图。

         而且刚开始使用内部参考电压时,用万用表测Vref电压只有0.72V左右。

         已经使能了菊花链。

         发送了读命令后,也格外发了个NOP命令,依然是没有数据输出。

         附图蓝色是时钟信号,黄色是DAC的SDO信号。

  • 最新中文资料更新20160122