Overview
The AD8495ARMZ is a precision thermocouple amplifier produced by Analog Devices Inc. This integrated circuit is designed to work with K-type thermocouples, providing a high-level output directly from the thermocouple signal. It combines an ice point reference with a precalibrated amplifier, making it suitable for use as a standalone thermometer or as a setpoint controller. The device is known for its ease of use, low cost, and high accuracy, making it a versatile component in various temperature measurement applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Thermocouple Type | K-type | - |
| Optimized Temperature Range | 0°C to 50°C | °C |
| Output Sensitivity | 5 mV/°C | mV/°C |
| Supply Voltage Range | 2.7 V to 36 V | V |
| Input Voltage Range | -VS - 0.2 to +VS - 1.6 | V |
| Input Bias Current | 25 nA | nA |
| Common-Mode Rejection | 1 °C/V | °C/V |
| Output Voltage Range | -VS + 0.025 to +VS - 0.1 | V |
| Short-Circuit Current | 7 mA | mA |
| Package Type | 8-Lead MSOP | - |
| Operating Temperature Range | -40°C to +125°C | °C |
Key Features
- Low Cost and Easy to Use: The AD8495ARMZ is designed for simplicity and cost-effectiveness, making it accessible for a wide range of applications.
- Precision Thermocouple Signal Conditioning: It includes a precision instrumentation amplifier with thermocouple cold junction compensation, providing a high-level output directly from the thermocouple signal.
- Flexible Power Supply Range: The device can operate with supply voltages ranging from 2.7 V to 36 V, making it versatile for different system requirements.
- High Accuracy: Pre-trimmed for K-type thermocouples with an initial accuracy of 1°C, ensuring reliable temperature measurements.
- Rugged Inputs: The inputs are capable of withstanding 4 kV ESD and provide overvoltage protection up to VS ± 25 V.
- Differential Inputs: Rejects common-mode noise on the thermocouple leads, enhancing signal integrity.
- Compact Package: Available in an 8-lead MSOP package, which is fully RoHS compliant.
Applications
- Temperature Measurement Systems: Ideal for use in various temperature measurement applications where high accuracy and reliability are crucial.
- Industrial Automation: Suitable for industrial systems that require a wide common-mode input range and robust signal conditioning.
- Process Control: Can be used as a setpoint controller or as a standalone thermometer in process control environments.
- Automotive and Aerospace: Applicable in automotive and aerospace industries where precise temperature monitoring is essential.
- Medical Devices: Used in medical equipment that requires accurate temperature measurements.
Q & A
- What type of thermocouple does the AD8495ARMZ support?
The AD8495ARMZ is designed to work with K-type thermocouples.
- What is the output sensitivity of the AD8495ARMZ?
The output sensitivity is 5 mV/°C.
- What is the supply voltage range for the AD8495ARMZ?
The device can operate with supply voltages ranging from 2.7 V to 36 V.
- How accurate is the AD8495ARMZ?
The device is pre-trimmed for K-type thermocouples with an initial accuracy of 1°C.
- What is the operating temperature range of the AD8495ARMZ?
The operating temperature range is -40°C to +125°C.
- What package type is the AD8495ARMZ available in?
The device is available in an 8-lead MSOP package.
- Is the AD8495ARMZ RoHS compliant?
Yes, the AD8495ARMZ is fully RoHS compliant.
- How does the AD8495ARMZ handle common-mode noise?
The device has differential inputs that reject common-mode noise on the thermocouple leads.
- Can the AD8495ARMZ be used as a setpoint controller?
Yes, it can be used as a setpoint controller or as a standalone thermometer.
- What is the typical short-circuit current of the AD8495ARMZ?
The typical short-circuit current is 7 mA.
