LM4040 Precision Voltage Reference Module 2.048V 4.096V
LM4040 Precision Voltage Reference Module 2.048V 4.096V
LM4040 Precision Voltage Reference Module Board — 2.048V & 4.096V
Achieve rock-solid measurement accuracy with the LM4040 Precision Voltage Reference Module Board. Featuring dual high-precision parallel voltage references at 2.048V and 4.096V, this compact module is engineered for engineers, hobbyists, and technicians who demand consistent, repeatable results in their electronic projects.
Whether you're calibrating a multimeter, feeding a stable reference to an ADC, or validating microcontroller analog inputs, this module delivers the stability and repeatability your application requires — right out of the box.
Key Features
- Dual Voltage Outputs: 2.048V and 4.096V precision reference outputs in a single module
- High Accuracy: 0.1% precision tolerance for consistent, trustworthy measurements
- Built-in Bias Resistor: 750-ohm onboard bias resistor for stable, ready-to-use operation
- Ultra-Compact Form Factor: Measures just 16 × 13 × 2 mm (0.63 × 0.51 × 0.08 in) — fits anywhere on your bench or inside enclosures
- Versatile Compatibility: Ideal for multimeters, ADCs, DACs, microcontrollers (Arduino, STM32, etc.), and test & measurement instruments
- Plug-and-Play Design: Pre-assembled and ready to integrate immediately
Specifications
- Reference IC: LM4040
- Output Voltages: 2.048V / 4.096V
- Accuracy: 0.1%
- Bias Resistor: 750Ω
- Dimensions: 16 × 13 × 2 mm / 0.63 × 0.51 × 0.08 in
Who Is This For?
This module is perfect for electronics students, makers, embedded systems developers, and professional technicians who need a reliable voltage reference for calibration, analog-to-digital conversion, or precision measurement tasks. Its small size and pre-assembled design make it an effortless drop-in solution for prototypes and production alike.
For more information on electronics measurement standards and best practices, visit NIST — Calibration & Metrology.
Frequently Asked Questions
Q: What does the LM4040 Precision Voltage Reference Module Board do?
A: The LM4040 Precision Voltage Reference Module provides two stable, high-accuracy voltage outputs — 2.048V and 4.096V — that serve as dependable reference signals for multimeters, ADCs, DACs, microcontrollers, and other test & measurement equipment. Its onboard 750-ohm bias resistor ensures it's ready to use without additional external components.
Q: What is the accuracy of this voltage reference module?
A: This module is rated at 0.1% precision accuracy, making it suitable for demanding calibration tasks, analog signal processing, and any application where a stable, repeatable voltage reference is critical.
Q: Is this module compatible with Arduino or other microcontrollers?
A: Yes. The LM4040 Precision Voltage Reference Module is compatible with Arduino, STM32, ESP32, and virtually any microcontroller or development board that accepts an external analog voltage reference. Simply connect to your AREF pin or analog input for immediate improvement in measurement accuracy.
Q: How compact is this module?
A: The module measures just 16 × 13 × 2 mm (approximately 0.63 × 0.51 × 0.08 inches), making it one of the smallest dual-output precision reference boards available — ideal for space-constrained builds and portable instruments.