Overview
The LTC2986ILX#PBF, manufactured by Analog Devices Inc., is a high-precision digital temperature measurement system. This device is capable of measuring a wide variety of temperature sensors, including thermocouples (Type B, E, J, K, N, S, R, T), RTDs (2-, 3-, or 4-wire), thermistors, and diodes. It provides digital output in °C or °F with 0.1°C accuracy and 0.001°C resolution. The LTC2986 also includes excitation current sources and fault detection circuitry, making it versatile for universal multi-sensor applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | No Missing Codes | - | 24 Bits | - | - |
| Integral Nonlinearity | VIN(CM) = 1.25V | 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 | - | -40°C to 85°C (LTC2986I) | - | - | - |
Key Features
- Measures a wide variety of temperature sensors including thermocouples, RTDs, thermistors, and diodes.
- Digital output in °C or °F with 0.1°C accuracy and 0.001°C resolution.
- Includes excitation current sources and fault detection circuitry for each type of temperature sensor.
- 10-channel software and pin-compatible versions of the 20-channel LTC2983/LTC2984.
- Special modes for easy protection in universal multi-sensor applications.
- EEPROM (in LTC2986-1 version) for configuration and data storage.
- SPI interface for communication and configuration.
- Operating temperature range: -40°C to 85°C (LTC2986I), -40°C to 125°C (LTC2986H).
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 can the LTC2986 measure?
The LTC2986 can measure 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 provides digital output with 0.1°C accuracy and 0.001°C resolution.
- What is the operating temperature range of the LTC2986I?
The operating temperature range of the LTC2986I is -40°C to 85°C.
- Does the LTC2986 include EEPROM?
The LTC2986-1 version includes EEPROM for configuration and data storage, but the standard LTC2986 does not.
- What interface does the LTC2986 use for communication?
The LTC2986 uses a SPI interface for communication and configuration.
- What are some common applications of the LTC2986?
Common applications include industrial automation, HVAC, medical equipment, automotive systems, and electronics manufacturing.
- What is the supply voltage range for the LTC2986?
The supply voltage range for the LTC2986 is 2.85V to 5.25V.
- What is the sleep current of the LTC2986?
The sleep current of the LTC2986 is between 25µA and 60µA.
- Does the LTC2986 have fault detection capabilities?
Yes, the LTC2986 includes fault detection circuitry for each type of temperature sensor.
- How many channels does the LTC2986 support?
The LTC2986 supports up to 10 channels.
