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AD8495/97 Full K-Type Range Thermocouple Amplifiers
Thermocouple amplifiers with cold junction compensation from Analog Devices
ADI's AD8495 and AD8497 are precision instrumentation amplifiers with thermocouple cold junction compensators on an integrated circuit. They produce a high-level (5 mV / °C) output directly from a thermocouple signal by combining an ice point reference with a pre-calibrated amplifier. They can be used as standalone thermometers or as switched output set point controllers, using a fixed or remote set point control. The AD8495 and AD8497 can be powered from a single-ended supply (less than 3 V) 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. However, it is also capable of delivering in excess of ±5 mA to a load.
Features
- Low cost and easy to use
- Pre-trimmed for K-type thermocouples
- Internal cold junction compensation
- High impedance differential input
- Standalone 5 mV / °C thermometer
- Reference pin allows offset adjustment
- Thermocouple break detection
- Low power: < 1 mW at VS = 5 V
- Small, 8-lead MSOP
Applications
- J- or K-type thermocouple temperature measurement
- Set point controller
- Celsius thermometer
- Universal cold junction compensator
- White goods (oven, stove top) temperature measurements
- Exhaust gas temperature sensing
- Catalytic converter temperature sensing
AD8495/97
| Image | Manufacturer Part Number | Description | Available Quantity | Price | ||
|---|---|---|---|---|---|---|
 |  | AD8495ARMZ | IC THERMOCOUPLE A W/COMP 8MSOP | 0 - Immediate | $7.27 | View Details |
| | AD8497ARMZ | IC THERMOCOUPLE A W/COMP 8MSOP | 1304 - Immediate | $7.27 | View Details |
Published: 2012-10-12
Greece