Overview
The LTC2986CLX#PBF, produced by Analog Devices Inc., is a high-accuracy digital temperature measurement system designed to measure a wide variety of temperature sensors. This device can digitally output temperature readings in °C or °F with 0.1°C accuracy and 0.001°C resolution. It supports multiple types of temperature sensors, including thermocouples (Type B, E, J, K, N, S, R, T), RTDs (2-, 3-, or 4-wire), thermistors, and diodes. The LTC2986 also includes excitation current sources and fault detection circuitry, making it versatile for various temperature measurement applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | - | - | 24 Bits | - |
| Integral Nonlinearity | - | 2 | 30 | ppm of VREF |
| Offset Error | 0.5 | - | 2 | µV |
| Offset Error Drift | 10 | - | 20 | nV/°C |
| Supply Voltage | 2.85 | - | 5.25 | V |
| Supply Current | 15 | - | 20 | mA |
| Sleep Current | 25 | - | 60 | µA |
| Operating Temperature Range | 0 | - | 70 | °C (LTC2986C) |
| Operating Temperature Range | -40 | - | 85 | °C (LTC2986I) |
| Operating Temperature Range | -40 | - | 125 | °C (LTC2986H) |
Key Features
- Supports a wide range of temperature sensors including thermocouples, RTDs, thermistors, and diodes.
- Automatically compensates for cold junction temperatures and linearizes the results.
- Includes excitation current sources and fault detection circuitry for each type of temperature sensor.
- High accuracy with 0.1°C accuracy and 0.001°C resolution.
- Software and pin-compatible with the 20-channel LTC2983/LTC2984.
- Special modes for easy protection in universal multi-sensor applications.
- EEPROM in the LTC2986-1 version for additional configuration and data storage.
Applications
- Industrial automation and control systems.
- HVAC and building management systems.
- Medical equipment and instrumentation.
- Automotive and transportation systems.
- Electronics and semiconductor manufacturing.
Q & A
- What types of temperature sensors does the LTC2986 support? The LTC2986 supports thermocouples (Type B, E, J, K, N, S, R, T), RTDs (2-, 3-, or 4-wire), thermistors, and diodes.
- What is the accuracy and resolution of the LTC2986? The LTC2986 has an accuracy of 0.1°C and a resolution of 0.001°C.
- Does the LTC2986 include fault detection circuitry? Yes, the LTC2986 includes fault detection circuitry for each type of temperature sensor.
- What are the operating temperature ranges for the LTC2986? The operating temperature ranges are 0°C to 70°C (LTC2986C), -40°C to 85°C (LTC2986I), and -40°C to 125°C (LTC2986H).
- Is the LTC2986 compatible with other Analog Devices products? Yes, it is software and pin-compatible with the 20-channel LTC2983/LTC2984.
- Does the LTC2986 have EEPROM? The LTC2986-1 version includes EEPROM for additional configuration and data storage.
- What is the supply voltage range for the LTC2986? The supply voltage range is 2.85V to 5.25V.
- What are the typical supply and sleep currents for the LTC2986? The typical supply current is 15-20 mA, and the sleep current is 25-60 µA.
- In which industries can the LTC2986 be applied? It can be applied in industrial automation, HVAC, medical equipment, automotive, and electronics manufacturing.
- How does the LTC2986 compensate for cold junction temperatures? The LTC2986 automatically compensates for cold junction temperatures and linearizes the results.
