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Product Detailed Parameters
- Description：IC THERMOCOUPLE A W/COMP 14CDIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Thermocouple Amplifier
- Sensor Type：External
- Sensing Temperature：-
- Accuracy：±1°C(Max)
- Topology：Ice Point Compensation, Overload Detection
- Output Type：Voltage
- Output Alarm：Yes
- Output Fan：No
- Voltage - Supply：5V ~ ±15V
- Operating Temperature：-55°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：14-CDIP (0.300", 7.62mm)
- Supplier Device Package：14-CERDIP
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Overview
The AD595CQ is a monolithic Type K thermocouple amplifier with integrated cold junction compensation. It provides a linearized voltage output of 10 mV/°C directly from the thermocouple signal. The device operates within an ambient temperature range of -55°C to +125°C and supports power supplies ranging from +5 V to +30 V. It features a low quiescent current of 160 µA and includes a thermocouple failure alarm output. The component is housed in a 14-pin CDIP package.
Feature Summary
- Integrated cold junction compensation eliminates the need for external reference circuits.
- Laser-wafer trimmed calibration ensures high accuracy for Type K thermocouple inputs.
- Built-in overload detection triggers a flexible alarm output upon thermocouple lead failure.
- Supports setpoint controller operation or standalone Celsius thermometer functionality.
Applications
- Industrial process temperature monitoring
- HVAC system control loops
- Thermocouple signal conditioning modules
Procurement Notes
Verify the specific C-grade calibration accuracy requirements against application needs. Confirm that the CDIP-14 package style matches the target PCB layout. Ensure supply voltages remain within the specified operational limits to maintain performance specifications.
Selection Notes
Select this component when direct Type K thermocouple interface is required without external amplification. Consider the wide operating temperature range for harsh environments. Evaluate the single-supply capability for simplified power design compared to dual-supply alternatives.
Part Context
This part belongs to the AD594/AD595 family of instrumentation amplifiers designed specifically for thermocouple applications. The AD595 variant is distinctively calibrated for Chromel-Alumel (Type K) sensors, whereas the AD594 serves Type J sensors. Both share identical pinouts and functional architectures.
Replacement Considerations
Direct substitutes include the AD595AQ for higher precision grades or the AD595CD for ceramic DIP packaging variants. Verify compatibility regarding laser trimming characteristics and package dimensions before implementation.
