Overview
The LM4040C41IDBZR is a precision micropower shunt voltage reference from Texas Instruments. This device is part of the LM4040 series, known for its high accuracy and stability over a wide range of operating conditions. The LM4040C41IDBZR offers a fixed output voltage of 4.096V, making it suitable for various applications requiring precise voltage referencing.
The device is characterized by its low dynamic impedance, low noise, and low temperature coefficient, ensuring a stable output voltage across different operating currents and temperatures. It is available in compact packages such as the SOT-23-3 and SC-70, making it ideal for space-constrained and portable applications.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | 4.096 | 4.086 | 4.106 | V |
| Reverse Breakdown Voltage Tolerance (ΔVZ) | ±10 mV | −20 mV | 20 mV | mV |
| Minimum Cathode Current (IZ,min) | 45 μA | 45 μA | 80 μA | μA |
| Average Temperature Coefficient (αVZ) | ±15 ppm/°C | ±100 ppm/°C | ±150 ppm/°C | ppm/°C |
| Output Noise (eN) | 35 μVRMS | - | - | μVRMS |
| Operating Temperature Range | -40°C to 85°C | -40°C | 85°C | °C |
| Package Type | SOT-23-3 | - | - | - |
Key Features
- Fixed output voltage of 4.096V with tight output tolerances (0.5% maximum for C grade)
- Low temperature coefficient: ±100 ppm/°C (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 85°C (I suffix) and –40°C to 125°C (Q suffix)
- Ultra-small packages: SOT-23-3 and SC-70
Applications
- Data-Acquisition Systems
- Energy Infrastructure
- Analog Input Module
- Field Transmitters
- Precision Audio
- Automotive Electronics
- Portable, Battery-Powered Equipment
- Notebook Computers
- Cell Phones
- Industrial Process Controls
Q & A
- What is the fixed output voltage of the LM4040C41IDBZR?
The fixed output voltage of the LM4040C41IDBZR is 4.096V.
- What is the temperature coefficient of the LM4040C41IDBZR?
The temperature coefficient is ±100 ppm/°C for the C grade.
- What is the minimum operating current for the LM4040C41IDBZR?
The minimum operating current is 45 μA.
- Does the LM4040C41IDBZR require an output capacitor?
No, the LM4040C41IDBZR does not require an output capacitor and is stable with all capacitive loads.
- What are the available package types for the LM4040C41IDBZR?
The device is available in SOT-23-3 and SC-70 packages.
- What is the operating temperature range for the LM4040C41IDBZR?
The operating temperature range is –40°C to 85°C for the I suffix and –40°C to 125°C for the Q suffix.
- What are some typical applications of the LM4040C41IDBZR?
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 LM4040C41IDBZR?
The output noise is 35 μVRMS typical.
- Is the LM4040C41IDBZR suitable for portable applications?
- What is the maximum tolerance for the output voltage of the LM4040C41IDBZR?
The maximum tolerance for the output voltage is ±0.5% for the C grade.
