• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 32 subscribers
  • Views 755 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Can SN65LVDT100 be used with ground pin connecting to negative voltage?

Bruce Jiang
Intellectual 310 points
Other Parts Discussed in Thread: SN65LVDT100

Hi.

In our application, we want to connect the ground pin of SN65LVDT100 to a negative voltage, such as -1V?

Is it working properly?

  • 0
    TI__Guru 62910 points

    Hi Bruce,

    This is OK to do, but you need to make sure that you are operating within the recommended spec range for the device.  The datasheet's single-ended voltage specifications (such as the supply voltage, the input voltage at each pin, and the output common mode voltage) are defined with respect to the voltage at the device's ground pin.  If the device's ground is 1 V lower than your your system's ground, then all of these specs need to also be decreased by 1 V.

    For example, the recommended supply voltage (Vcc) range is 3.0 V to 3.6 V above the device's ground.  If the device's ground is at -1 V in your application, then the supply voltage range for you would be 2.0 V to 2.6 V.  Similarly, the input voltage (Vi) range is specified to be 0 V to 4 V above the device's ground.  This range would translate to -1 V to 3 V in your application.

    I hope this is clear.  Please let me know if you have any questions.

    Best regards,
    Max Robertson
    Analog Applications Engineer
    Texas Instruments
    m-robertson@ti.com