• AD7928评估板 AVDD异常

    您好!我最近购入了一块 EVAL-AD7928SDZ 的ADC芯片的评估板产品,但是测试时发现如下异常:连接电源后,用万用表测出的T4测试点的电压(AVDD)为6.91V,根据数据手册,此处应为+5V的输出(已通过短路帽选择由板子产生5V的AVDD),由于电压不匹配,导致无法正常使用。

       

  • AD7928 via SPI

    Hello all,

    first poster here...

    I'm trying to use a AD7928 ADC via a Microchip dsPIC33F SPI bus. I'm communicating with other DACs via the same SPI without problem but the AD7928 does not work properly.

    Results are the same if the SPI is in 8…

  • AD7928 Eval Board Schematics

    Hello 

    where can I find the schematics of EVAL-AD7928 ? 

    There was an answer under a similar topic here, but attachment is missing.

    https://ez.analog.com/data_converters/precision_adcs/f/q-a/23933/schematic-for-the-ad7928-eval-board/166567#166567 

  • AD7928 Track-and-Hold Acquisition Time

    Hi, All!

    The AD7928 ADC input is supplied with a pulsed signal of ~1us duration. The ADC will make a acquisition for 300 ns after falling edge of CS signal and then will do the conversion for several SCLK cycles. The changing the input signal after acquisition…

  • Type of power supply recommended for the AD7928?

    Hello,

    I'm planning to use a Low Dropout regulator LT1129 to supply the power to a AD7928. Since the reference Input voltage to this ADC requires +/-1% for specified performance, I wonder if the use of a switching supply is recommended?.

    How much…

  • LT1129-5 vs ADP7102 for providing power to the AD7928?

    Hello,

    I would like to know if you could provide some facts in terms of specifications for the LT1129-5 and ADP7102 that can help to define which fits better for providing power to the AD7928.

    I wonder if I can use a switching supply along with the LT1129…

  • AD7928 input range and Vdrive

    Hello

    I would like to use AD7927 at VDD=5V, Vdrive=3.3V and input range =0~2*REFin.

    Can I use AD7928 at this condition ?

    The datasheet rev.E P.3 says below about 0~2*REFin  input range.

    "RANGE bit set to 0, AVDD/VDRIVE = 4.75 V to 5.25 V" 

  • ad7928  STM32

    ad7928 采样的时候是如何处理机制的

    AD7928Data2.WRITE_SEQ = 0X11;

      AD7928Data2.DONT_TCARE_9_ADD2 = 0X01;

      AD7928Data2.ADD1_ADD0 = 0X00;

      AD7928Data2.PM1_PM0 = 0X11;

      AD7928Data2.SHADOW_DONT_TCARE_2 = 0X10;

      AD7928Data2.RANGE_CONDING = 0X11;

    u16 AD7928_Read_ADC1…

  • RE: AD7928  ADC Multichannel problem

    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,
  • RE: AD7928 Multi-channel problem

    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,