Precision Thermocouple
Amplifiers with Cold Junction Compensation AD8494/AD8495/AD8496/AD8497
FEATURES
Low cost and easy to use Pretrimmed for J or K type thermocouples Internal cold junction compensation High impedance differential input Standalone 5 mV/°C thermometer Reference pin allows offset adjustment Thermocouple break detection Laser wafer trimmed to 1°C initial accuracy and 0.
025°C/°C ambient temperature rejection Low power: 1 mW at VS = 5 V Wide power supply range Single supply: 2.
7 V to 36 V Dual supply: ±2.
7 V to ±18 V Small, 8-lead MSOP
FUNCTIONAL BLOCK DIAGRAM
REF
+IN
ESD AND OVP
AD8494/AD8495/ AD8496/AD8497
A2
THERMOCOUPLE
COLD JUNCTION COMPENSATION
A3
OUT
–IN 1MΩ
E...