Overview
The LM4040C25QDBZR 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 LM4040C25QDBZR offers a fixed output voltage of 2.5V, making it suitable for various precision voltage reference needs. It is characterized by its tight output tolerances, low temperature coefficient, and low output noise, ensuring stable operation over a broad range of operating currents and temperatures.
Key Specifications
| Parameter | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|
| Output Voltage (VZ) | 2.5 | 2.5 | 2.5 | V |
| Output Voltage Tolerance (ΔVZ) | -12 to 12 | -30 | 30 | mV |
| Minimum Cathode Current (IZ,min) | 45 | 45 | 75 | μA |
| Maximum Cathode Current (IZ,max) | - | - | 15 | mA |
| Average Temperature Coefficient (αVZ) | ±20 | ±15 | ±150 | ppm/°C |
| Operating Temperature Range (TA) | - | -40 | 125 | °C |
| Output Noise | 35 | - | - | μVRMS |
| Package Type | SOT-23-3 | - | - | - |
Key Features
- Fixed output voltage of 2.5V with tight output tolerances (0.5% for C grade)
- Low temperature coefficient (100 ppm/°C for C grade)
- Low output noise (35 μVRMS typical)
- Wide operating current range (45 μA to 15 mA)
- Stable with all capacitive loads; no output capacitor required
- Available in extended temperature range (-40°C to 125°C)
- Space-saving SOT-23-3 and SC-70 packages
Applications
- Data-Acquisition Systems
- Energy Infrastructure
- Analog Input Module
- Field Transmitters
- Precision Audio
- Automotive Electronics
Q & A
- What is the output voltage of the LM4040C25QDBZR?
The output voltage of the LM4040C25QDBZR is 2.5V.
- What is the temperature coefficient of the LM4040C25QDBZR?
The temperature coefficient of the LM4040C25QDBZR is ±100 ppm/°C for the C grade.
- What is the minimum cathode current required for the LM4040C25QDBZR?
The minimum cathode current required is 45 μA.
- What is the maximum operating temperature for the LM4040C25QDBZR?
The maximum operating temperature is 125°C.
- Does the LM4040C25QDBZR require an output capacitor for stability?
No, the LM4040C25QDBZR is stable with all capacitive loads and does not require an output capacitor.
- What are the typical applications of the LM4040C25QDBZR?
Typical applications include data-acquisition systems, energy infrastructure, analog input modules, field transmitters, precision audio, and automotive electronics.
- What is the package type of the LM4040C25QDBZR?
The package type is SOT-23-3.
- What is the output noise of the LM4040C25QDBZR?
The output noise is 35 μVRMS typical.
- What is the operating current range of the LM4040C25QDBZR?
The operating current range is from 45 μA to 15 mA.
- Is the LM4040C25QDBZR suitable for portable applications?
