Overview
The LM4040C25IDBZR is a precision micropower shunt voltage reference produced by Texas Instruments. This device is part of the LM4040 series, which offers a range of fixed output voltages and is designed for versatility and ease of use. The LM4040C25IDBZR specifically provides a fixed output voltage of 2.5V with a tolerance of ±0.5%. It is packaged in a space-saving SOT-23-3 package, making it ideal for applications where size is a critical factor.
The device is characterized by its low dynamic impedance, low noise, and low temperature coefficient, ensuring a stable output voltage over a wide range of operating currents and temperatures. It operates over an extended temperature range of –40°C to 125°C, making it suitable for various industrial and automotive applications.
Key Specifications
| Parameter | Description | Typical | Minimum | Maximum |
|---|---|---|---|---|
| Output Voltage (VZ) | Reverse Breakdown Voltage | 2.5V | 2.375V | 2.625V |
| Output Voltage Tolerance | ΔVZ | ±0.5% | -12mV | 12mV |
| Minimum Cathode Current (IZ,min) | 45μA | 45μA | 80μA | |
| Maximum Cathode Current (IZ,max) | 15mA | |||
| Average Temperature Coefficient (αVZ) | ±100ppm/°C | ±100ppm/°C | ±150ppm/°C | |
| Operating Temperature Range | -40°C | 125°C | ||
| Package Type | SOT-23-3 |
Key Features
- Fixed output voltage of 2.5V with ±0.5% tolerance
- Tight output tolerances and low temperature coefficient (maximum 0.5%, 100ppm/°C for C 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 125°C
- Space-saving SOT-23 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 LM4040C25IDBZR? The output voltage is 2.5V.
- What is the tolerance of the output voltage? The tolerance is ±0.5%.
- What is the minimum cathode current required for operation? The minimum cathode current is 45μA.
- What is the maximum operating current? The maximum operating current is 15mA.
- Does the LM4040C25IDBZR require an output capacitor for stability? No, it is stable with all capacitive loads and does not require an output capacitor.
- What is the operating temperature range of the LM4040C25IDBZR? The operating temperature range is –40°C to 125°C.
- In what package is the LM4040C25IDBZR available? It is available in a SOT-23-3 package.
- What are the key applications of the LM4040C25IDBZR? Key applications include data-acquisition systems, energy infrastructure, analog input modules, field transmitters, precision audio, and automotive electronics.
- What is the average temperature coefficient of the LM4040C25IDBZR? The average temperature coefficient is ±100ppm/°C.
- Is the LM4040C25IDBZR RoHS compliant? Yes, the LM4040C25IDBZR is RoHS compliant.
