TXMC638 User Manual Issue 1.0.2
Page 61 of 86
Additional statement
A differential input voltage of ±5V means that the difference between the two input pins VIN+ and VIN- of the
differential input can range from +5V to -5V, but contains no information about the allowed voltage relative to
ground for each input pin. If e.g. VIN+ = 98V and VIN- = 102V, the differential input voltage would be -4V.
But the input common mode voltage is 100V, truly damaging the TXMC638.
Example analog Input Level:
At the vertical black dashed line
VIN+
=
-10 V
VIN-
=
-5 V
VDIFF
=
-10
-
-5 V
=
-5 V
VCM
=
-10
+
-5 V
/2
=
-7.5 V
