Overview
The AD8494ARMZ, produced by Analog Devices Inc., is a precision instrumentation amplifier with thermocouple cold junction compensation. This device is part of the AD8494/AD8495/AD8496/AD8497 series, which combines an ice point reference with a precalibrated amplifier to produce a high-level output directly from a thermocouple signal. The AD8494 is specifically precalibrated to match the characteristics of J-type (iron-constantan) thermocouples. It can be used as a standalone thermometer or as a switched output setpoint controller, making it versatile for various temperature measurement applications.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Minimum Operating Supply Voltage (V) | 2.7 | Maximum Operating Supply Voltage (V) | 36 |
| Output Sensitivity | 5 mV/°C | Package | MSOP-8 |
| Pin Count | 8 | Supply Current (typical) | 180 μA |
| Thermocouple Type | J-type (iron-constantan) | Bandwidth | 30 kHz |
| RoHS Status | Compliant | ECCN Code | EAR99 |
Key Features
- Reliable and Consistent Performance: The AD8494 provides accurate and reliable temperature measurements due to its precalibrated amplifier and cold junction compensation.
- Easy Integration: It can be easily integrated with other devices, including lower supply ADCs, and can operate with a wide range of supply voltages.
- Durable Construction: Designed for heavy use, the device ensures long-term reliability in various environments.
- Low Power Consumption: Operates with a typical supply current of 180 μA, minimizing self-heating and power consumption.
Applications
- Temperature Measurement: Ideal for precise temperature measurements in industrial, automotive, and medical applications.
- Setpoint Controllers: Can be used as switched output setpoint controllers for temperature control systems.
- Industrial Systems: Suitable for use in systems requiring a wide common-mode input range and high accuracy.
- Cost-Effective Solution: Offers a cost-effective solution for thermocouple-based temperature measurement and control.
Q & A
- Q: What is the thermocouple type supported by the AD8494ARMZ?
A: The AD8494ARMZ is precalibrated to match the characteristics of J-type (iron-constantan) thermocouples. - Q: What is the output sensitivity of the AD8494ARMZ?
A: The output sensitivity is 5 mV/°C. - Q: What is the typical supply current of the AD8494ARMZ?
A: The typical supply current is 180 μA. - Q: What is the bandwidth of the AD8494ARMZ?
A: The bandwidth is 30 kHz. - Q: Can the AD8494ARMZ operate with a single supply voltage?
A: Yes, it can operate with a single supply voltage ranging from 2.7 V to 36 V. - Q: What is the package type of the AD8494ARMZ?
A: The package type is MSOP-8. - Q: Is the AD8494ARMZ RoHS compliant?
A: Yes, the AD8494ARMZ is RoHS compliant. - Q: What is the ECCN code for the AD8494ARMZ?
A: The ECCN code is EAR99. - Q: Can the AD8494ARMZ be used in industrial systems?
A: Yes, it is suitable for use in industrial systems due to its wide common-mode input range and high accuracy. - Q: What kind of warranty is typically offered for the AD8494ARMZ?
A: The AD8494ARMZ typically comes with a 1-year warranty covering any defects in materials and workmanship under normal use.
