Overview
The LM4040DEM3-2.5/NOPB is a precision micropower shunt voltage reference IC produced by 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 LM4040DEM3-2.5/NOPB is packaged in a space-saving SOT-23-3 package and requires no external capacitors for operation, making it stable with all capacitive loads. It offers fixed output voltages with tight tolerances and low temperature coefficients, ensuring stable output voltage over various operating currents and temperatures.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Reference Type | Shunt Precision References |
| Output Voltage | 2.5 V |
| Initial Accuracy (A Grade, 25°C) | ±0.1% (Maximum) |
| Temperature Coefficient | 100 ppm/°C (Maximum) |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | 85°C (Industrial), 125°C (Extended) |
| Shunt Current - Min | 60 µA |
| Shunt Current - Max | 15 mA |
| Low Output Noise (10 Hz to 10 kHz) | 35 µV RMS (Typical) |
| Package | SOT-23-3 |
| Mounting Style | SMD/SMT |
Key Features
- Fixed output voltages of 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V
- Tight output tolerances and low temperature coefficient: Maximum 0.1%, 100ppm/°C – A Grade; Maximum 0.2%, 100ppm/°C – B Grade; Maximum 0.5%, 100ppm/°C – C Grade; Maximum 1.0%, 150ppm/°C – D Grade
- Low output noise: 35µVRMS typical
- Wide operating current range: 45µA typical to 15mA
- Stable with all capacitive loads; no output capacitor required
- Available in extended temperature range: –40°C to 125°C
- Small packages: SOT-23, TO-92, and SC70
Applications
- Data-Acquisition Systems
- Energy Infrastructure
- Analog Input Module
- Field Transmitters
- Precision Audio
- Automotive Electronics
- Battery-Powered Equipment
- Instrumentation and Test Equipment
- Process Controls
- Energy Management
Q & A
- What is the LM4040DEM3-2.5/NOPB used for? The LM4040DEM3-2.5/NOPB is a precision micropower shunt voltage reference IC used in various applications requiring stable 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 LM4040 require an external capacitor for operation? No, the LM4040 does not require an external capacitor for operation and is stable with all capacitive loads.
- What is the temperature coefficient of the LM4040? The temperature coefficient of the LM4040 is up to 100 ppm/°C for the A grade.
- What is the operating current range of the LM4040? The operating current range of the LM4040 is from 45µA typical to 15mA.
- What are the package options for the LM4040? The LM4040 is available in SOT-23, TO-92, and SC70 packages.
- What is the noise level of the LM4040? The LM4040 has a low output noise level of 35µVRMS typical.
- What are the typical applications of the LM4040? Typical applications include data-acquisition systems, energy infrastructure, precision audio, automotive electronics, and battery-powered equipment.
- Is the LM4040 RoHS compliant? Yes, the LM4040 is RoHS compliant.
- What is the operating temperature range of the LM4040? The operating temperature range is –40°C to 85°C (industrial) and up to 125°C (extended temperature range).
