AD597ARZ

AD597 is a thermocouple conditioner and setpoint controller. It is a monolithic temperature setpoint controller that has been optimized for use at elevated temperatures such as this found in oven control applications. The device cold junction compensates and amplifies a type K thermo couple input to derive an internal signal proportional to temperature. The internal signal is then compared with an externally applied setpoint voltage to yield a low impedance switched output voltage. Dead band or switching hysteresis can be programmed using a single external resistor. Alternately, the AD597 can be configured to provide a voltage output (10mV/°C) directly from a type K thermocouple signal. It can also be used as a standalone voltage output temperature sensor.

• Low cost, built in ice point compensation
• Temperature setpoint operation - ON/OFF, programmable switching hysteresis
• High impedance differential input
• 36V maximum common-mode input voltage (+60°C and VS = 10V)
• Gain error range from -1.5 to +1.5% (+60°C and VS = 10V)
• 10mV/°C typical nominal transfer function (+60°C and VS = 10V)
• 0.1µA typical input bias current (+60°C and VS = 10V)
• 1mV/V typical power supply sensitivity–RTO (+60°C and VS = 10V)
• 15KHz typical 3dB bandwidth (+60°C and VS = 10V)
• 8 pin SOIC package, operating temperature range from -40 to +125°C

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