AD8496CRMZ

AD8496CRMZ is a precision instrumentation amplifier with thermocouple cold junction compensators on an integrated circuit. It produces a high level (5mV/°C) output directly from a thermocouple signal by combining an ice point reference with a precalibrated amplifier. It can be used as a standalone thermometer or as a switched output setpoint controller using a fixed or remote setpoint control. It can be powered from a single-ended supply (less than 3V) and can measure temperatures below 0°C by offsetting the reference input. To minimize self-heating, an unloaded AD849x typically operates with a total supply current of 180μA, but it is also capable of delivering an excess of ±5mA to a load. It is used in applications such as setpoint controller, Celsius thermometer, universal cold junction compensator, white goods (oven, stovetop) temperature measurements, exhaust gas temperature sensing, catalytic converter temperature sensing.

• J type thermocouple, low cost and easy to use
• Internal cold junction compensation, high impedance differential input
• Reference pin allows offset adjustment, thermocouple break detection
• Single supply range from 2.7V to 36V, dual supply range from ±2.7V to ±18V
• Gain error is 0.1% maximum at (TA = TRJ = 25°C, RL = 100kohm)
• Input bias current is 25nA typical at (TA = TRJ = 25°C, RL = 100kohm)
• Voltage noise is 0.8μV p-p typical at (TA = TRJ = 25°C, RL = 100kohm)
• 31kHz -3dB bandwidth at (TA = TRJ = 25°C, RL = 100kohm)
• Quiescent current is 180μA typical at (TA = TRJ = 25°C, RL = 100kohm)
• Operating temperature range from -40°C to +125°C, 8-lead MSOP package