• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 47 subscribers
  • Views 235 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.

ADS7049-Q1: DVDD in over the recommended max of 3.6V

Shinya Sawamoto
Expert 5260 points
Part Number: ADS7049-Q1

Hello,

What if DVDD is in over the recommended max of 3.6V (but under 3.9V), is there any specific concern to be worse any performance steeply?
(AVDD and DVDD are divided and AVDD is within 3.6V.)

Regards,
Shinya Sawamoto

  • 0
    TI__Guru**** 172516 points
    Hi Sawamoto-san,

    As noted on page 13, AVDD is used as the reference for the ADS7049-Q1. Having a stable reference is critical for getting good conversion results from any ADC (see Figure 35 and Table 1, pg 15). There are various graphs throughout the datasheet showing SNR & SINAD, THD, INL, DNL, Gain error, etc versus the Reference Voltage (the AVDD supply) that you can use to determine what performance issues you might run into when operating the device beyond 3.6V.