TSC101 データシートの表示（PDF） - STMicroelectronics

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TSC101

High side current sense amplifier

STMicroelectronics 

TSC101

Parameter definitions

4.5

Output voltage accuracy

The output voltage accuracy is the difference between the actual output voltage and the

theoretical output voltage. Ideally, the current sensing output voltage should be equal to the

input differential voltage multiplied by the theoretical gain, as in the following formula:

Vout-th=Av . Vsense

The actual value is very slightly different, mainly due to the effects of:

● the input offset voltage Vos,

● non-linearity

Figure 22. Vout vs. Vsense theoretical and actual characteristics

6OUT

!CTUAL

)DEAL

6OUTACCURACYFOR6 SENSEM6

M6

6SENSE

!-

The output voltage accuracy, expressed in percentage, can be calculated with the following

formula:

ΔVout

=

a----b----s---(---V----o---u----t---–----(---A----v----⋅-------V-----s---e---n---s---e----)--)

Av ⋅ Vsense

with Av = 20 V/V for TSC101A, Av = 50 V/V for TSC101B and Av = 100 V/V for TSC101C.

Doc ID 13313 Rev 3

13/18

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