• AD7887: FAQ

    FAQ

  • AD7887: Overvoltage protection

    Q 

    Our project uses the AD7887 in a mixed voltage system. During a fault /
    failure it is possible that the component is not supplied with 5V, but that
    one of it's inputs (CS and/or CLK) is set high by a 3.3V component on the
    PCB. I presume there…

  • AD7887: Using the interal reference

    Q 

    I have used AD converter AD7887 in analog acquisition board and I have found
    this problem:
    I have used on-chip reference externaly on board and reference voltage change
    its value when conversions
    are stopped.
    I use AD7887 in mode 1 (PM1=0, PM0…

  • ADXL103 / ADXL203 accelerometer with AD7887 ADC for vibration sensing

    I want to measure vibration with an ADXL103/ADXL203 accelerometer and sample the analog output voltage with an AD7887 ADC at a rate of around 2.5kHz. The samples are then used to calculate an RMS value (based on 5000 samples). The bandwidth of the accelerometer…

  • RE: AD7887

    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: AD7887

    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,
    …

  • What are the maximum rise and fall times for SPI signals to the AD7887

    I am using the AD7887 in an electrically noisy environment. I want to filter the chip select and clock signals. What range of rise and fall times can these inputs tolerate? Also, is there any hysteresis on these inputs. The timing specifications table…

  • AD7887 ADC数据采集

    AD7887使用5V供电

    CS==MCU IO

    SCLK==MCU IO

    DIN==MCU IO

    DOUT==MCU IO

    VDD==5V

    AIN1/VREF==5V

    AIN0==模拟信号输入

    只需发16个时钟信号就可以获取到ADC数据了吗？程序如下：发送命令为0x21，请问是否还需要进行其他的配置，只需要重复调用此函数应该可以获取到ADC数据了，目前采集不到ADC的数据，请大神技术支持一下！

  • Interfacing AD7887 with Atmega 32

    Hi,  I am trying to interface AD7887 with Atmega32, and I am stuck with how to read Spi for continuous 16 clock cycles. Also, I came across this code for AD7887_Read16Bits(), where one needs to pass 2 control bytes. What are these control bytes?

  • Q&A on ADXL203EB (Dual Axis Accelerometer Evaluation Board)

    Q 

    1. ADXL203 Accelerometer itself is marked 33878203xlI382, Is the accelerometer
    supposed to have a zero G bias of 0V or 2.5V?

    2. At zero G upon measurement with an oscilloscope my accelerometer produces 1V
    and the self test feature produces an…