Overview
The LM4040A10IDBZR is a precision micropower shunt voltage reference produced by Texas Instruments (though it may be listed under National Semiconductor due to historical reasons). This component is designed for space-critical applications and offers high accuracy and stability. It is available in small packages such as SOT-23 and SC70, making it ideal for portable and compact designs. The LM4040A10IDBZR features fixed reverse breakdown voltages and does not require an external stabilizing capacitor, simplifying the design process.
Key Specifications
| Parameter | Test Conditions | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage | IR = 100μA | 10 | - | - | V |
| Reverse Breakdown Voltage Tolerance (A Grade) | IR = 100μA, TA = 25°C | - | - | ±2.5 mV | mV |
| Minimum Operating Current | TA = TJ = 25°C | 45 | 45 | 60 | μA |
| Maximum Operating Current | - | - | - | 15 | mA |
| Temperature Coefficient | IR = 10mA | - | - | ±20 ppm/°C | ppm/°C |
| Wideband Noise | IR = 100μA, 10Hz ≤ f ≤ 10kHz | 35 | - | - | μVrms |
| Operating Temperature Range | - | -40°C to 85°C (Industrial Grade) | - | -40°C to 125°C (Extended Grade) | °C |
Key Features
- Fixed reverse breakdown voltages of 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V
- No external stabilizing capacitor required; stable with all capacitive loads
- Tight output tolerances: ±0.1% (A Grade), ±0.2% (B Grade), ±0.5% (C Grade), and ±1% (D Grade)
- Low temperature coefficient: up to ±20 ppm/°C
- Low output noise: 35 μVrms typical
- Wide operating current range: 45 μA to 15 mA
- Available in small packages: SOT-23 and SC70
- AEC Q-100 qualified for automotive applications with extended temperature range: –40°C to +125°C
Applications
- Field Transmitters
- Energy Infrastructure
- Data Acquisition
- Analog Input Modules
- Automotive systems
- Audio and Video applications
Q & A
- What is the LM4040A10IDBZR used for?
The LM4040A10IDBZR is a precision micropower shunt voltage reference used in various applications requiring stable and accurate voltage references.
- What are the available output voltages for the LM4040 series?
The LM4040 series offers fixed output voltages of 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V.
- Does the LM4040A10IDBZR require an external capacitor for operation?
No, the LM4040A10IDBZR does not require an external stabilizing capacitor and is stable with all capacitive loads.
- What is the operating current range of the LM4040A10IDBZR?
The operating current range is from 45 μA to 15 mA.
- What are the temperature ranges for the LM4040A10IDBZR?
The component is characterized for operation over an ambient temperature range of –40°C to 85°C (Industrial Grade) and –40°C to 125°C (Extended Grade).
- What is the typical noise level of the LM4040A10IDBZR?
The typical wideband noise is 35 μVrms.
- What are the package options for the LM4040A10IDBZR?
The component is available in SOT-23 and SC70 packages.
- Is the LM4040A10IDBZR suitable for automotive applications?
- What is the temperature coefficient of the LM4040A10IDBZR?
The temperature coefficient is up to ±20 ppm/°C.
- What are some common applications of the LM4040 series?
