AD594ADZ Datasheet PDF - ADI

●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