AD594ADZ

AD594 is a complete instrumentation amplifier and thermocouple cold junction compensator on a monolithic chip. 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. It 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. It can be powered from a single ended supply (including +5V) and by including a negative supply, temperatures below 0°C can be measured.

• 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
• Quiescent current (no load) is 160µA typical at (+25°C and VS = 5V)
• 3dB bandwidth is 15KHz typical at (+25°C and VS = 5V)
• Operating temperature range from -55°C to 125°C
• Package style is TO-116 (D)

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party