TSC101

Parameter definitions

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Parameter definitions

Common mode rejection ratio (CMR)

The common-mode rejection ratio (CMR) measures the ability of the current-sensing

back to the input so that its effect can be compared with the applied differential signal. The

CMR is defined by the formula:

Supply voltage rejection ratio (SVR)

The supply-voltage rejection ratio (SVR) measures the ability of the current-sensing

input so that its effect can be compared with the applied differential signal. The SVR is

defined by the formula:

The input offset voltage is defined as the intersection between the linear regression of the

can be calculated with the following formula:

voltage:

CMR

20

–

ΔV

out

ΔV

icm

Av

⋅

------------------------------

log

⋅

=

SVR

20

–

ΔV

out

ΔV

CC

Av

⋅

------------------------------

log

⋅

=

V

os

V

sense1

V

sense1

V

sense2

–

V

out1

V

out2

–

------------------------------------------------

V

out1

⋅

⎝⎠

⎛⎞

–

=

Av

V

out

V

sense

------------------

=