Author Topic: ADC selection for IR image sensor...  (Read 849 times)

0 Members and 1 Guest are viewing this topic.

Offline sangarTopic starter

  • Regular Contributor
  • *
  • Posts: 125
  • Country: in
ADC selection for IR image sensor...
« on: February 17, 2019, 04:21:29 pm »
Hi
For one of my projects, I am going to use ML8540. The problem I am having is in the selection of ADC to convert analog output from ML8540. I know it gives 6fps. So, below is my calculation for the minimum ADC sample rate from ADC to be selected,

1 fps = 48 x 47 pixels = 2256 pixels
6 fps = 6 x 2256 pixels = 13,536 pixels

the above means that I should select an ADC which supports minimum 13.536K samples. Am I right? ...The second concern is ADC resolution...The spec says the measurement range is -30 to +300C and 0.5C resolution, here, what is the voltage step per 0.5 degree change ?
please suggest...

Edited: Attached the spec of ML8540
Thanks,
Sangar
« Last Edit: February 19, 2019, 04:09:30 am by sangar »
 

Offline Raj

  • Frequent Contributor
  • **
  • Posts: 701
  • Country: in
  • Self taught, experimenter, noob(ish)
Re: ADC selection for IR image sensor...
« Reply #1 on: February 18, 2019, 04:40:44 pm »
volts/step = (max volts out-min volts out) /330 i guess (for 0-5v out, its 0.0152v for each degree)

any decent fast flash adc ,preferably parallel out, should do

you should attach, not link PDFs
Trying to go for Indian military contract? (they'll need more resolution )
 

Offline sangarTopic starter

  • Regular Contributor
  • *
  • Posts: 125
  • Country: in
Re: ADC selection for IR image sensor...
« Reply #2 on: February 19, 2019, 04:13:36 am »
Hi,

Thanks...I have attached the spec of ML8540...The problem is that I am not sure how much voltage it will give per degree change. It is not clearly explained in the document...The things I made in the first post is my knowledge from reading the spec. Could you confirm for the same?.

Thanks,
Sangar
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf