APPLICATION INFORMATION
OUTPUT LINEARITY
In all current sensing applications where the common-mode
voltage can vary significantly, it is important that the current
sensor maintain the specified output linearity, regardless of
the input differential or common-mode voltage. The AD8219
maintains a very high input-to-output linearity even when the
differential input voltage is very small.
0.7
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0.5
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0.2
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DIFFERENTIAL INPUT VOLTAGE (mV)
Figure 27. Typical Gain Linearity at Small Differential Inputs
(VCM = 4 V to 80 V)
AD8219
Regardless of the common mode, the AD8219 provides a
correct output voltage when the input differential is at least
1 mV. The ability of the AD8219 to work with very small
differential inputs, regardless of the common-mode voltage,
allows for optimal dynamic range, accuracy, and flexibility in
any current sensing application.
Rev. 0 | Page 11 of 16