Overview
The LM4040DEM3X-2.5/NOPB is a precision micropower shunt voltage reference produced by Texas Instruments (formerly National Semiconductor). This component is designed for space-critical applications and is available in small surface-mount packages such as SOT-23, TO-92, and SC70. The LM4040 series is known for its high accuracy and stability, making it ideal for various electronic systems that require precise voltage references.
Key Specifications
| Parameter | Test Conditions | Typical | Maximum | Unit |
|---|---|---|---|---|
| Reverse Breakdown Voltage | IR = 100μA | 2.5 | 2.5 | V |
| Reverse Breakdown Voltage Tolerance (A Grade, 25°C) | IR = 100μA | ±2.5mV | ±19mV | mV |
| Minimum Operating Current | TA = TJ = 25°C | 60μA | 65μA | μA |
| Maximum Operating Current | TA = TJ = 25°C | - | 15mA | mA |
| Industrial Temperature Range | - | - | -40°C to +85°C | °C |
| Extended Temperature Range | - | - | -40°C to +125°C | °C |
| Low Output Noise (10Hz to 10kHz) | IR = 100μA | 35μVrms | - | μVrms |
| Temperature Coefficient | IR = 10mA | - | 100ppm/°C | ppm/°C |
| Reverse Dynamic Impedance | IR = 1mA, f = 120Hz, IAC = 0.1 IR | 0.3Ω | 0.9Ω | Ω |
Key Features
- AEC Q-100 qualified for automotive applications with Extended Grade 1: −40°C to +125°C and Industrial Grade 3: −40°C to +85°C.
- Available in small packages: SOT-23, TO-92, and SC70.
- No output capacitor required.
- Tolerates capacitive loads.
- Fixed reverse breakdown voltages of 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V.
- High accuracy with output voltage tolerance of ±0.1% (A grade) at 25°C.
- Low output noise of 35μVrms (typical) from 10Hz to 10kHz.
- Wide operating current range from 60μA to 15mA.
- Low temperature coefficient of 100ppm/°C (maximum).
Applications
- Field Transmitters
- Energy Infrastructure
- Data Acquisition
- Analog Input Modules
- Automotive systems
- Audio and Video equipment
- Portable, Battery-Powered Equipment
Q & A
- What is the LM4040DEM3X-2.5/NOPB used for?
The LM4040DEM3X-2.5/NOPB is a precision micropower shunt voltage reference used in various applications requiring a stable and accurate voltage reference.
- What are the available package types for the LM4040DEM3X-2.5/NOPB?
The LM4040DEM3X-2.5/NOPB is available in SOT-23, TO-92, and SC70 packages.
- Does the LM4040DEM3X-2.5/NOPB require an external capacitor?
No, the LM4040DEM3X-2.5/NOPB does not require an external stabilizing capacitor.
- What is the temperature range for the LM4040DEM3X-2.5/NOPB?
The industrial temperature range is −40°C to +85°C, and the extended temperature range is −40°C to +125°C.
- What is the minimum and maximum operating current for the LM4040DEM3X-2.5/NOPB?
The minimum operating current is 60μA, and the maximum operating current is 15mA.
- What is the output voltage tolerance for the LM4040DEM3X-2.5/NOPB?
The output voltage tolerance is ±0.1% (A grade) at 25°C.
- What is the typical output noise of the LM4040DEM3X-2.5/NOPB?
The typical output noise is 35μVrms from 10Hz to 10kHz.
- Is the LM4040DEM3X-2.5/NOPB suitable for automotive applications?
- What are some common applications of the LM4040DEM3X-2.5/NOPB?
Common applications include field transmitters, energy infrastructure, data acquisition, analog input modules, automotive systems, and audio/video equipment.
- What is the reverse dynamic impedance of the LM4040DEM3X-2.5/NOPB?
The reverse dynamic impedance is 0.3Ω to 0.9Ω at IR = 1mA and f = 120Hz.
