• [Error li1050]   Initial definition:     '.\Release\AD5420.doj'         Attempted redefinition: '.\Debug\AD5420.doj'

    .\Code\unit_conversion.c

    .\Code\WD.c

    .\Code\WorkMode.c

    Linking...

    [Error li1050]  '_AD5420ReadControlReg' ('AD5420ReadControlReg'): Multiply defined symbol in processor 'P0'.

            Initial definition:     '.\Release\AD5420.doj'…

  • AD5420和AD5421的区别是什么?AD5420是否能采用共地接法?

    AD5421要求浮地接法,因为LOOP-输出电压比地更低,因此电流会从地流入,必须采用浮地保证输出电流精度。
    但AD5420的电流输出电压应该比地高·,因此应该可以采用共地接法,是否如此?

  • RE: low signal from AD5420

    Hi Andrey,

    When you're measuring the voltage at Iout, you should do it across an RL, a typical value here is 500 ohm. 

    Can you send scope shots of your voltage measurements?

    Best regards,

    Ian

  • AD5420 problem

    Hi,

    I am using a AD5420 how in image

    , but the output is always constant. In code, I send the next words:

    LATCH = 0;

    delay of 100ns

    01010101 -adress byte (control register)

    00010000 - control register

    00000101 - define mode 4 to 20mA

    delay of…

  • RE: AD5420工作温度高

    请问能分享一下电路图吗?我按官方的好像有一些问题

  • AD5420 Power supplies

    Will the AD5420 performance meet the specifications under the following conditions?

    AVDD 24V

    DVCC 3.3V

    External Reference 5V

    ( Can the External Reference be more than the digital supply? )

    Thanks,

    JPD

  • AD5420 FAULT issue

    Hello. I am consulting for a client based in US. We have designed a device for them that is based on a D/A converter (AD5420), which is supposed to output a 4~20 mA signal to a variable valve to regulate pressure and flow.

    Electronically, I am using…

  • AD5420输出

    我正在使用AD5420芯片做4-20mA输出,使用STM32处理器进行控制。目前可以正确设置AD5420的控制寄存器,芯片有3.97-3.99mA的电流输出。也能够正确回读控制寄存器和状态寄存器(断开输出电流回路后回读时Iout故障位会被置高),但是目前还面临两个问题:

            1、写入数据寄存器输出电流保持4mA左右不变。回读数据寄存器没有数据输出(估计都是0)。时序图见附件(写入0x01C000),只有两个表笔,测了scksdilatch引脚在最后一位输入过后一段时间置高。

            2、使用外部…

  • AD5420 HART output

    Hello

    I'm using AD5420 in above mentioned configuration. I've interfaced AD5700-1 HART modem with AD5420.

    I'm providing Hart out from modem to CAP2 pin not RSET. RSET pin is just having 15K resistor to ground which is not shown here.

    In all…

  • AD5420 Daisy Chain Issue

    I tried to use the following schematic to set AD5420 working in daisy-chain mode.

    When the print circuit board was produced, I wrote driver code to make it work. It seems that the dirver can work properly, because the content of Control Register, readed…