• RE: ad7091R

    EHILLEL820,

    You absolutely can read from channel 0 to channel 3 (1-4) in sequential order.   Assuming you are using the AD7091R-4, you can simply program the channel register (ADDR = 0x01) with code 0x000F to enable channels 0 to 3 for conversion.  

    If you…

  • RE: AD7091R-4 Chip Select

    Hi Aero_EE,

         When reading the conversion result in the AD7091R-4, the MSB data is shifted on the falling edge of CS. The CS edge is needed, CS needs to high after 16th SCLK falling edge to return SDO high impedance.

    Regards,

    JOnathan

  • RE: AD7091R-4 Malfunctioning

    Hi, Just to sync up.

    I have placed a 100nF cap on the reset line and 100k to VDRIVE.  This delays the rise time of the RESET line.  So far I have not had any more issue at startup.

    Best regards

    Stefan

  • RE: AD7091R-4 offset

    Hi, Terumasa.

    Let me check on this. Meanwhile, can you provide the configuration of the relevant links on your test? What did you use for 2.5V external reference? Also what external power supply unit was it that you used? We don't usually recommend using…

  • RE: no-OS reference driver for AD7091R-4 ADC

    Tim,

    Unfortunately, we don't have it. At this moment, we are supporting AD7091R and AD7091R-5 (4 channels but I2C) - Linux Drivers [Analog Devices Wiki].

    Regards,

    Dragos

  • AD7091R-4 SPI Sample Code for Altera's FPGA

    Hi,

    Now I'm designing my product by using AD7091R-4 and Altera FPGA.

    I find the Altera FPGA's sample code for AD7091R on ADI wilki but it's only single channel and without controlling SDI pin.

    So I would like to ask whether do you have…

  • RE: Simple C example for AD7091R

    Hi Burt,

    Currently there is not an example device driver for this specific part.  The AD7091 is close to the AD7091R-4, but it does not feature any of the configuration registers that are configured over the SPI interface.  The only driver offered for…

  • AD7091R-2,-4 External Ref Input Range

    HI,,

     

    I have a question , AD7091R-2,-4 External Reference Input range.

    There is 1.0 - Vdd V in Page 3 , at dataseat

    But , there is 2.5 - Vdd in Page 18 , at dataseat.

     

    I think external reference input range is 1.0 - Vdd .

    Which is correct?

     

  • AD7091R-4BCPZ设计问题

    使用AD8275AD7091R-4BCPZ-RL7设计4ADC采集电路上报给CPLD

    1.在测量0~10V输入时,AD8275ref1ref2GNDAD7091Rref2.048V

    2.在测量-12V~+12V输入时,AD8275ref1ref22.5VAD7091Rref5Vref191更换为ref195

    问题:

    1.使用1ref192是否可以满足4AD8275的参考电压的电流需求?

    2.AD7091Rmuxout直连ADCinPCB布线上是否有屏蔽要求…

  • AD7091R使用咨询

    使用AD8275和AD7091R-4BCPZ-RL7设计4路ADC采集电路上报给CPLD

    1.在测量0~10V输入时,AD8275的ref1和ref2接GND,AD7091R的ref接2.048V

    2.在测量-12V~+12V输入时,AD8275的ref1和ref2接2.5V,AD7091R的ref接5V(ref191更换为ref195)

    问题:

    1.使用1片ref192是否可以满足4片AD8275的参考电压的电流需求?

    2.AD7091R的muxout直连ADCin在PCB布线上是否有屏蔽要求…