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.

[参考译文] INA149:总输入偏移电压

Guru**** 2386840 points
Other Parts Discussed in Thread: INA149
请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/601309/ina149-total-input-offset-voltage

部件号:INA149

大家好,

我想计算INA149的总输入偏移电压。 请检查以下计算是否正确? 我想这是最坏的情况。  

Vos_initial = 1100uV

Vos_Drift = 15uV/Celcius *(80 Celcius - 25 Celcius)= 825uV

Vos_PSRR = 120dB ->是否正确? 如何将其更改为电压值?

Vos_CMRR = Vincm * 10^(90/20)= Vincm * 31.6uV -> Vincm是INA149输入的共模电压

总输入偏移= Vos_initial + Vos_Drift + Vos_PSRR + Vos_CMRR

当输入共模更改时,这些更改只影响Vos_CMRR?

此致,