full-scale error voltage or gain error (EG)

キャンセル
次の結果を表示 
表示  限定  | 次の代わりに検索 
もしかして: 

full-scale error voltage or gain error (EG)

717件の閲覧回数
rkandiah
Contributor II

I am reading RT600, Rev. 2.0, 1 April 2022 datasheet. 

Does the full-scale error voltage spec shown below mean, when I measure 1.8V, I can have up to +/- 1.8*0.3/100 V error? (i.e. (+/-) 5.4 mV error at full scale of 1.8V?)

Does this error scale linearly? e.g. if I measure 1V, will it be +/- 3mV error? or 5.4mV error will be present at any voltage measured? 

rkandiah_1-1684256997129.png

 

Thanks. 

 

ラベル(1)
タグ(1)
0 件の賞賛
3 返答(返信)

685件の閲覧回数
rkandiah
Contributor II

Hello Kerry, Thanks for the response. 

  1. Is there a way to reduce this error?
  2. Does RT600 support ADC self calibration?
  3. Does RT600 contain an internal bandgap reference for ADC correction? 

Thanks. 

0 件の賞賛

678件の閲覧回数
kerryzhou
NXP TechSupport
NXP TechSupport

  Hi @rkandiah ,

1 Is there a way to reduce this error?

=>Answer: From software side, I didn't find the calibration register.

  So, maybe the hardware can improve it, please check this application note:

https://www.nxp.com/docs/en/application-note/AN4373.pdf

2. Does RT600 support ADC self calibration?

=>Answer: No, no register to realize it.

3.Does RT600 contain an internal bandgap reference for ADC correction? 

=>Answer: Have internal bandgap, but didn't used to the correction, in fact, bandgap also have the error rate.

 

Wish it helps you!

Best Regards,

Kerry

 

0 件の賞賛

690件の閲覧回数
kerryzhou
NXP TechSupport
NXP TechSupport

Hi @rkandiah ,

    Thank you for your interest in the NXP MIMXRT product, I would like to provide service for you.

   My understanding is the error rate is linearly, at least, here you can consider it linear.

   If you measure 1V, it will it be +/- 3mV error.

 

Wish it helps you!

If you still have questions about it, please kindly let me know.

Best Regards,

Kerry

0 件の賞賛