• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 46 subscribers
  • Views 187 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.

AMC1306E25: ENOB of AMC1306

Wendy Wang1
Genius 11250 points
Part Number: AMC1306E25

Hi team,

If the input voltage is 9mV, with 250mV input range and sin3 filter. Is it possible to realize 14bit ENOB? I'm asking because in this condition, our customer tested the AMC1306 to be 13 bit(ENOB), which means that the last 3 bits are fluctuating.

Best regards.

Wendy

  • +1
    TI__Mastermind 31655 points

    Hello Wendy,

    I recommend that the customer take a look at the Delta Sigma Modulator filter calculator (www.ti.com/.../sbar010) for a better understanding of the ENOB capabilities of the AMC1306. The main driver in the achievable ENOB will be the oversampling ratio (OSR) of the filter. Since they are already using a sinc3 filter, they should be able to see close to 14bits with an OSR in the range of 256. The customer can test this in the filter calculator linked above. Note that this comes at the cost of a slower output rate, so depending on the frequency of their input using a higher OSR may not be possible. 

    Regards,