Overview
The LM4040A25IDBZR 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 array of applications. The LM4040A25IDBZR 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 | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | IZ = 100μA, 25°C | V | 2.5 | 2.5 | 2.5 |
| Reverse Breakdown Voltage Tolerance (ΔVZ) | IZ = 100μA, 25°C | mV | -2.5 | 0 | 2.5 |
| Minimum Cathode Current (IZ,min) | 25°C | μA | 45 | 75 | 80 |
| Average Temperature Coefficient (αVZ) | IZ = 10mA, 25°C | ppm/°C | ±20 | ±20 | ±100 |
| Operating Temperature Range | °C | -40 | 85 | ||
| Package | SOT-23-3 |
Key Features
- Fixed output voltage of 2.5V with tight output tolerances and low temperature coefficient (maximum 0.2% for B grade and 100 ppm/°C).
- Low output noise: 35μVRMS typical.
- Wide operating current range: 45μA typical to 15mA.
- Stable with all capacitive loads; no output capacitor required.
- Available in extended temperature range: –40°C to 125°C for certain models.
- 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 fixed output voltage of the LM4040A25IDBZR?
The fixed output voltage of the LM4040A25IDBZR is 2.5V.
- What are the temperature tolerances for the LM4040A25IDBZR?
The LM4040A25IDBZR has a maximum temperature coefficient of 100 ppm/°C and an initial accuracy of 0.2% for the B grade.
- What is the minimum cathode current required for the LM4040A25IDBZR?
The minimum cathode current required is 45μA at 25°C.
- Does the LM4040A25IDBZR require an output capacitor for stability?
No, the LM4040A25IDBZR is stable with all capacitive loads and does not require an output capacitor.
- What are the package options for the LM4040A25IDBZR?
The LM4040A25IDBZR is available in SOT-23-3 and SC-70 packages.
- What is the operating temperature range for the LM4040A25IDBZR?
The operating temperature range is –40°C to 85°C for the 'I' suffix models.
- What are some common applications for the LM4040A25IDBZR?
Common applications include data-acquisition systems, energy infrastructure, analog input modules, field transmitters, precision audio, and automotive electronics.
- How does the LM4040A25IDBZR handle noise?
The LM4040A25IDBZR has low output noise, typically 35μVRMS.
- What is the maximum operating current for the LM4040A25IDBZR?
The maximum operating current is 15mA.
- Is the LM4040A25IDBZR suitable for portable applications?
