• What is a baud rate of AD5700-1 to communicate with micro-controller

    I want to interface AD5700-1 with microcontroller. To interface it with controller, I require to know on how much baud rate AD5700-1 replies to the microcontroller.

  • AD5700/AD5700-1 Rx/Tx Pin Z in Power-down and Powered Off?

    Are the AD5700/AD5700-1 Rx and Tx pins in hi-z (essentially benign) when the part is powered-off and/or held in reset?

  • 急!!AD5700-1输出不正常求助

    参考CN0267画的电路图,AD5700始终不工作(怀疑是外部晶振的问题),后来换了AD5700-1,使用内部震荡且使能CLKOUT,但是示波器检测,CLKOUT无波形,AD5700-1的TXD引脚输入0X55,波形如下,但是HART_OUT引脚输出波形不对,如下图,这会是什么什么问题呢?备注:电路板默认配置使用AD5700的,使用AD5700-1时采用电路板割线和飞线进行的,不知道是否有干扰。

    图一、AD5700-1的TXD引脚输入0X55

    图二、AD5700-1的HART_OUT…

  • AD5700 HART Modem Popular Applications

    What are the most popular applications in which the AD5700 & AD5700-1 HART Modem products are used and can they be used in both Master and Slave mode?

  • AD5700-1 connect REF_EN  to IOVDD

    In POWER DOWN MODE section of datasheet, I found the following description.

    Is it OK for me to connect REF_EN to IOVDD or any problem other than power consumption?

     If the reference is not powered down while RESET is low, the output voltage on the REF…

  • AD5700-1 Minimalistic design and components

    Hi forum!

    I want to use HART modem AD5700-1with the intent of minimum possible complexity of operation and minimum # of components.My application is simple;i just want to make a half duplex uart bridge...i am designing a single pcb that can either take…

  • AD5700-1 Carrier Frequency Problem

    I have been experiencing a problem with the AD5700-1 where by one of the carrier frequencies is instead just a HIGH signal. This has happened on separate boards and with both 1200Hz and 2200Hz signals.

    The problem will sometimes manifest during use as…

  • 3 questions for your AD5700-1

    Dear Sir/Madam,

    Our customer is studying with your AD5700-1 HART modem.

    So he has tossed the following questions.

    Question-1

    When he receive the HART signal, what is the min-max time of 1bit pulse width the digital signal that is outputed from RxD…

  • RC oscillator (AD5700-1 only)

    Does the Internal RC oscillator (AD5700-1 only) meet the HART specification over the extended temperature range of -40° to +125°C?

    The AD5700-1 specifies a +/-1% internal oscillator for the temperature range -40° to +125°C. Per the factory, the part…

  • AD5700-1全双工

    AD5700-1手册中叙述如下:

    全双工操作意味着AD5700/AD5700-1的调制器和解调器同

    时使能。这是一项非常强大的功能,可以对HART设备以

    及HART设备和主机控制器之间的整个信号路径执行自测

    操作,从而验证本地通信环路功能是否正常。在生产自测

    中这种高级系统诊断功能非常有用,能够提高应用的安全

    完整性(SIL)等级。全双工操作模式通过将DUPLEX引脚接

    逻辑高电平来使能。

    有一些问题:

    1.这个是在哪个引脚完成的?RX和TX?

    2..可不可这么理解,打开全双工之后…