Overview
The LM4040B25IDCKR is a precision micropower shunt voltage reference from Texas Instruments. This device is part of the LM4040 series, known for its versatility and ease of use across a wide range of applications. The LM4040B25IDCKR specifically offers a fixed output voltage of 2.5V, making it suitable for various precision voltage reference needs.
Key Specifications
| Parameter | Typical | Minimum | Maximum |
|---|---|---|---|
| Output Voltage (VZ) | 2.5V | - | - |
| Output Voltage Tolerance | - | -2.5mV | 2.5mV |
| Temperature Coefficient | ±100 ppm/°C | - | - |
| Minimum Cathode Current (IZ,min) | 45μA | - | 80μA |
| Operating Temperature Range | -40°C to 85°C | - | - |
| Output Noise | 35μVRMS | - | - |
Key Features
- Fixed output voltage of 2.5V with tight output tolerances and low temperature coefficient (maximum 0.2% and 100 ppm/°C for B grade).
- Low output noise: 35μVRMS typical.
- Wide operating current range: 45μA to 15mA.
- Stable with all capacitive loads; no output capacitor required.
- Available in extended temperature range: –40°C to 85°C.
Applications
- Data-Acquisition Systems
- Energy Infrastructure
- Analog Input Module
- Field Transmitters
- Precision Audio
- Automotive Electronics
Q & A
- What is the output voltage of the LM4040B25IDCKR?
The output voltage of the LM4040B25IDCKR is 2.5V. - What is the temperature coefficient of the LM4040B25IDCKR?
The temperature coefficient is ±100 ppm/°C. - What is the minimum cathode current for the LM4040B25IDCKR?
The minimum cathode current is 45μA. - Does the LM4040B25IDCKR require an output capacitor?
No, the LM4040B25IDCKR is stable with all capacitive loads and does not require an output capacitor. - What are the typical operating temperature ranges for the LM4040B25IDCKR?
The operating temperature range is –40°C to 85°C. - What is the output noise of the LM4040B25IDCKR?
The output noise is 35μVRMS typical. - In which applications is the LM4040B25IDCKR commonly used?
The LM4040B25IDCKR is commonly used in data-acquisition systems, energy infrastructure, analog input modules, field transmitters, precision audio, and automotive electronics. - What are the different grades available for the LM4040 series?
The LM4040 series is available in A, B, C, and D grades, each with different accuracy and temperature coefficient specifications. - How does the LM4040B25IDCKR handle capacitive loads?
The LM4040B25IDCKR is stable with all capacitive loads and does not require an output capacitor. - What is the typical operating current range for the LM4040B25IDCKR?
The operating current range is from 45μA to 15mA.
