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AD595 Thermocouple Amplifier IC
The AD595 is a complete thermocouple signal conditioning amplifier designed by Analog Devices, specifically optimized for use with Type K thermocouples. It integrates a precision instrumentation amplifier, a thermocouple cold-junction compensator, and a high-level output amplifier — all on a single monolithic chip.
This IC simplifies temperature measurement by converting a thermocouple’s small millivolt signal directly into a calibrated 10 mV/°C output, requiring no external components or calibration. With built-in cold-junction compensation and excellent linearity, the AD595 delivers accurate, stable, and low-noise temperature readings over a wide range.
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Features:-
- • Pretrimmed for Type J (AD594) or Type K (AD595) Thermocouples
- • Can Be Used with Type T Thermocouple Inputs
- • Low Impedance Voltage Output: 10 mV/8C
- • Built-In Ice Point Compensation
- • Wide Power Supply Range: +5 V to 615 V
- • Low Power: <1 mW typical
- • Thermocouple Failure Alarm
- • Laser Wafer Trimmed to 18C Calibration Accuracy
- • Setpoint Mode Operation
- • Self-Contained Celsius Thermometer Operation
- • High Impedance Differential Input
- • Side-Brazed DIP or Low Cost Cerdip
Specification:-
| Parameters | Min | Max | Units |
| +VS to –VS | 36 | V | |
| Common-Mode Input Voltage | –VS – 0.15 | +VS | V |
| Differential Input Voltage | –VS | +VS | V |
| Alarm Voltages | V | ||
| –ALM | –VS | –VS + 36 | V |
| +ALM | –VS | +VS | V |
| Operating Temperature Range | -55 | 125 | °C |
| Output Short Circuit to Common | Indefinite | ||
Applications:
- Thermocouple signal conditioning and amplification
- Industrial and laboratory temperature controllers
- Data acquisition and monitoring systems
- Process control and automation
- Oven, furnace, and heater temperature regulation
- Embedded temperature measurement systems
*Product image for illustration purposes only, actual product may vary.
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