The AD594ADZ is a Monolithic Thermocouple Amplifier with cold junction compensation. It combines an ice point reference with a precalibrated amplifier to produce a high level (10mV/°C) output directly from a thermocouple signal. Pin-strapping options allow it to be used as a linear amplifier-compensator or as a switched output setpoint controller using either fixed or remote setpoint control. It can be used to amplify its compensation voltage directly, thereby converting it to a stand-alone Celsius transducer with a low impedance voltage output. The AD594 includes a thermocouple failure alarm that indicates if one or both thermocouple leads become open. The alarm output has a flexible format which includes TTL drive capability. The AD594 can be powered from a single ended supply (including +5V) and by including a negative supply, temperatures below 0°C can be measured.
● Pretrimmed for type J thermocouples
● Built-in ice point compensation
● Thermocouple failure alarm
● Laser wafer trimmed to 1°C calibration accuracy
● Setpoint mode operation
● Self-contained celsius thermometer operation
● High impedance differential input
● 10mV/°C Low impedance voltage output
● <1mW Typical low power
