Overview
The LM4040C30QDBZR 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 LM4040C30QDBZR offers a fixed output voltage of 3V, 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 | Typical | Minimum | Maximum |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | IZ = 100μA, 25°C | V | 3 | - | - |
| Reverse Breakdown Voltage Tolerance (ΔVZ) | IZ = 100μA, 25°C | mV | 15 | -15 | 15 |
| Minimum Cathode Current (IZ,min) | 25°C | μA | 45 | 45 | 80 |
| Average Temperature Coefficient of Reverse Breakdown Voltage (αVZ) | IZ = 10mA, 25°C | ppm/°C | ±20 | - | - |
| Operating Temperature Range | - | °C | - | -40 | 125 |
| Output Noise | - | μVRMS | 35 | - | - |
| Package Type | - | - | SOT-23-3 | - | - |
Key Features
- Fixed output voltage of 3V with tight output tolerances and low temperature coefficient.
- Maximum output voltage tolerance of 0.5% and a temperature coefficient of 100 ppm/°C for the 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-23-3 package.
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 LM4040C30QDBZR?
The fixed output voltage of the LM4040C30QDBZR is 3V.
- What is the temperature coefficient of the LM4040C30QDBZR?
The temperature coefficient of the LM4040C30QDBZR is 100 ppm/°C for the C grade.
- What is the minimum cathode current required for the LM4040C30QDBZR?
The minimum cathode current required is 45μA.
- Does the LM4040C30QDBZR require an output capacitor for stability?
No, the LM4040C30QDBZR is stable with all capacitive loads and does not require an output capacitor.
- What is the operating temperature range of the LM4040C30QDBZR?
The operating temperature range is –40°C to 125°C.
- What package type is the LM4040C30QDBZR available in?
The LM4040C30QDBZR is available in the SOT-23-3 package.
- What are some typical applications of the LM4040C30QDBZR?
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 LM4040C30QDBZR?
The output noise is 35μVRMS typical.
- What is the maximum output voltage tolerance for the C grade of the LM4040C30QDBZR?
The maximum output voltage tolerance for the C grade is 0.5%.
- What is the wide operating current range of the LM4040C30QDBZR?
The wide operating current range is from 45μA to 15mA.
