Precision Data Converters

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ADS7951
Related Posts

  • Forum Post: Unused GPIO pins on ADS7951 and other ADS79xx

    Brian Willoughby
    If the GPIO pins are not to be used in a given circuit with the ADS7951, is it better to leave them floating, or should they be tied to a fixed potential? If the former, should they be programmed as outputs or inputs? If the latter, should they be tied high, low, or would a mix be best depending upon...
    on Oct 4, 2009

  • Forum Post: Re: 2.5V REF can be optional for ADS79xx?

    Rick Downs - WEBENCH Design Center
    The "o/p" was meant to convey "output", not "optional". I have no idea why someone felt compelled to even put that there, but sorry for the confusion. The ADS7951 does not have an internal reference so the use of an external reference voltage is NOT optional - you have to...
    on Nov 19, 2009

  • Forum Post: Re: 2.5V REF can be optional for ADS79xx?

    Rick Downs - WEBENCH Design Center
    You're right, you probably don't need all that much current but the transient currents may be high - and they may be enough to cause the interference with the A/D. I'd agree that you could hook the REF5025 directly to the ADS7951, but use a buffer to create your virtual ground. The choice...
    on Nov 19, 2009

  • Forum Post: 2.5V REF can be optional for ADS79xx?

    Brian Willoughby
    I am in the midst of prototyping a couple of boards using the ADS7951. Starting on page 34 of the data sheet, the example circuits mark the REF5025 part as "o/p" which implies that it is an optional part. The text states that the chip "can operate with an external 2.5V ± 10mV...
    on Nov 19, 2009

  • Forum Post: Cabling and Signal Conditioning for serial PCB connections

    Brian Willoughby
    Are there any Application Notes which discuss design recommendations for cabling choices and signal conditioning when connecting serial data between boards? I am working with the ADS7951 and ADS7953 on a board with the TMS320VC5506. These converters have a maximum clock rate of 20 MHz and a maximum...
    on Oct 10, 2009

  • Forum Post: ADS79xx: Unexpected binary output for midscale voltage input

    Brian Willoughby
    I have the ADS7951 working in a circuit. I can successfully read GPIO data and conversions, but I am getting 0x0FFF for all conversions even though the voltage input is midscale. I start by programming Auto 2 Mode to end with channel 7, and then priming the command with 0x3C50, corresponding to Auto...
    on Dec 21, 2009

  • Forum Post: ADS7952 serial interface / SPI

    PaulRoßmann
    Hello Everybody, i'm trying to get the serial interface of the ADS7952 to work with the SPI of a AT91SAM9 (ARM 9), but the ADS7952 is behaving very unexpectedly. I'm sending the following data words: while(1) { 0x4200 // device reset for(i=0;i<3;i++) 0x1080 //manual mode, channel...
    on Nov 21, 2010

  • Forum Post: ADS7952 input stage

    Dominique Montbrun
    Hi all, Could you tell me where can I found information about the ADS7952 analog input electronic input stage? Are the ADS7952 inputs be equiped with clamp diodes to power supply? Thanks in advance.
    on Dec 2, 2010

  • Forum Post: ADS79xx Charge injection

    Tom Roe
    I am looking for a detailed description of the ADS7953 so I can figure out how the different internal capacitors cause charge injection out to the Ain pins. I see the timing diagram in the data sheet but from that it looks like there is only one time at which charge injection occurs. From the timing...
    on Sep 21, 2011

  • Forum Post: ADS7950 Configuration failure

    STAN POLIPAS
    Hello, I am using ADS7950 in AUTO1 mode. At power up ADS7950 configured to read CH2 and CH3 and voltage scale set to 5V. After about 500ms ADS7950 reconfigured to AUTO1 mode for CH0 and CH1 with 5V voltage scale. The problem is that occasionally ADS7950 does not reconfigure itself and remains in...
    on Dec 5, 2011

  • Forum Post: ADS7951 EVK Error

    Rotem Sasporta
    Hi, I started to utilize the TI ADS7951 and I see that when using a fast sampling rate, the reading are not accurate. I am trying to test it on the EVB you provide me but get this error: "Unable to locate the LabVIEW Run-Time engine. adcpro requires a version 8.5.1 (or compatible) Lab...
    on Mar 21, 2012

  • Forum Post: ADS7951 schematic searching

    Chien Gary
    Hi, I am looking for the schematic for ADS7951 I got some for ADS7952 and ADS7953 but not for 7951 on the below Is the same schematic used for series 795x ? or someone please help me to get the schematic. thanks for your help.
    on Jun 27, 2012

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