Datasheet

SBOA102A
January 2005
Sensor-Emulator-EVM
System Reference Guide
5
1.0 Introduction to
The Sensor Emulator
Q: Why not just use a precision voltage source to emulate a
sensor?
A: A precision voltage source is not affected by changing sensor
excitation. Many sensor signal conditioning chips modulate the
sensor excitation to compensate for sensor nonlinearity. In this
case (and in the case of a ratiometric system), a precision voltage
source would not work. Also, it is much more convenient to have
all the different sensor conditions pre-programmed so that you
can quickly transition from one condition to another without having
to reprogram the source at each different condition.