AD594ADZ

ANALOG DEVICES  AD594ADZ.  芯片, 信号调节器

The 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.

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Pretrimmed for type J thermocouples

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Built-in ice point compensation

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Thermocouple failure alarm

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Laser wafer trimmed to 1°C calibration accuracy

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Setpoint mode operation

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Self-contained celsius thermometer operation

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High impedance differential input

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10mV/°C Low impedance voltage output

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<1mW Typical low power