Datasheet

7
Signal Chain Design Guide
Remote Sensing
All sensors in a high noise environment should be
considered as remote sensors. Also, sensors not located
on the same PCB as the signal conditioning circuitry are
remote. Remote sensing applications typically use a
differential amplifier or an instrumentation amplifier.
Key Amplifier Features
■ Differential input
■ Large CMR
■ Small Vos
Products
■ High Precision
• Low Offset Op Amps
• Auto-zeroed Op Amps
• Low Noise Op Amps
Sensors and Applications
■ High temperature sensors
• Thermocouples for stoves, engines and process
control
• RTDs for ovens and process control
■ Wheatstone Bridges
• Pressure sensors for automotive and industrial
control
• Strain gauges for engines
■ Low side current monitors for motors and batteries
Differential Amplifier
Thermocouple Circuit Using an INA
VOUT
EMI
EMI
VRE F
MCP6VXX
MCP616
–
+
TCJ
(Cold Junction)
Input
Filter
Temp. Sensor
THJ
(Hot Junction
)
INA
–
+
–
+
ADC
MCU
V
REF
2
2
Remote Sensors