Overview
The LM4040D25QDBZR 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 LM4040D25QDBZR 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 | 2.475 | 2.525 | V |
| Output Voltage Tolerance (ΔVZ) | -12 | -25 | 12 | mV |
| Minimum Cathode Current (IZ,min) | 45 | 45 | 80 | μA |
| Maximum Cathode Current (IZ,max) | - | - | 15 | mA |
| Average Temperature Coefficient (αVZ) | ±15 | ±100 | ±150 | ppm/°C |
| Operating Temperature Range (TA) | - | -40 | 125 | °C |
| Output Noise (RMS) | 35 | - | - | μVRMS |
| Package Type | SOT-23-3 | - | - | - |
Key Features
- Fixed output voltage of 2.5V with tight output tolerances (up to 1.0% for D grade) and low temperature coefficient (up to 150 ppm/°C).
- 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 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 LM4040D25QDBZR? The output voltage is 2.5V.
- What is the temperature coefficient of the LM4040D25QDBZR? The temperature coefficient is up to 150 ppm/°C for the D grade.
- What is the minimum cathode current required for the LM4040D25QDBZR? The minimum cathode current is 45μA.
- What is the maximum operating temperature for the LM4040D25QDBZR? The maximum operating temperature is 125°C.
- Does the LM4040D25QDBZR require an output capacitor for stability? No, it is stable with all capacitive loads and does not require an output capacitor.
- What are the package options for the LM4040D25QDBZR? It is available in SOT-23-3 and SC-70 packages.
- What are some typical applications for the LM4040D25QDBZR? Typical applications include data-acquisition systems, energy infrastructure, analog input modules, field transmitters, precision audio, and automotive electronics.
- What is the output noise of the LM4040D25QDBZR? The output noise is 35μVRMS typical.
- What is the maximum cathode current for the LM4040D25QDBZR? The maximum cathode current is 15mA.
- Is the LM4040D25QDBZR suitable for portable applications? Yes, it is suitable for portable applications due to its low power consumption and small package size.
