{"product_id":"lm4040-precision-voltage-reference-module-2048v-4096v-board","title":"LM4040 Voltage Reference Module 2.048V 4.096V | PCB Board","description":"\u003ch2\u003eLM4040 Precision Voltage Reference Source Board — 2.048V \u0026amp; 4.096V\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eLM4040 Precision Voltage Reference Module\u003c\/strong\u003e delivers rock-solid, highly accurate reference voltages of \u003cstrong\u003e2.048V and 4.096V\u003c\/strong\u003e for your electronics projects. Whether you're calibrating a multimeter, feeding an ADC, or benchmarking a microcontroller, this compact dual-output board gives you the stable, repeatable reference you need — every time.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual High-Precision Outputs:\u003c\/strong\u003e Simultaneous 2.048V and 4.096V parallel voltage references on a single compact board\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e750-Ohm Bias Resistor:\u003c\/strong\u003e Onboard resistor ensures stable output under a wide range of load conditions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLM4040 IC:\u003c\/strong\u003e Industry-trusted shunt voltage reference with tight initial accuracy and low temperature coefficient\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact Design:\u003c\/strong\u003e Measures just 16 × 13 × 2 mm (0.63 × 0.51 × 0.08 in) — fits easily on any breadboard or PCB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Ready:\u003c\/strong\u003e Pre-assembled board — no soldering of core components required; connect and measure immediately\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Ideal for use with multimeters, ADCs, DACs, Arduino, Raspberry Pi, and other microcontroller platforms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Black PCB:\u003c\/strong\u003e Clean, professional finish with clearly labeled test pads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReference IC:\u003c\/strong\u003e LM4040\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltages:\u003c\/strong\u003e 2.048V \/ 4.096V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBias Resistor:\u003c\/strong\u003e 750 Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoard Dimensions:\u003c\/strong\u003e 16 × 13 × 2 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis module is perfect for \u003cstrong\u003eelectronics hobbyists, engineers, students, and makers\u003c\/strong\u003e who need a trustworthy voltage reference for calibration tasks, sensor interfacing, analog-to-digital conversion accuracy, or general lab and bench work. It's an essential building block for any serious electronics toolkit.\u003c\/p\u003e\n\n\u003ch3\u003eLearn More About Voltage References \u0026amp; Electronics Standards\u003c\/h3\u003e\n\u003cp\u003eFor technical background on measurement accuracy and electronic standards, visit the \u003ca href=\"https:\/\/www.nist.gov\/topics\/electronics\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNational Institute of Standards and Technology (NIST) — Electronics\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the LM4040 Precision Voltage Reference Module do?\u003c\/h4\u003e\n\u003cp\u003eA: The LM4040 Precision Voltage Reference Module provides two highly accurate, stable DC reference voltages — 2.048V and 4.096V — from a single compact board. These references are used to calibrate and improve the accuracy of multimeters, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and microcontroller-based measurement systems.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I connect and use the LM4040 Voltage Reference Board?\u003c\/h4\u003e\n\u003cp\u003eA: Simply connect the board's power supply pins to a suitable DC input voltage (typically 5V or higher, as required by the LM4040 with the onboard 750-ohm bias resistor), and then measure the 2.048V or 4.096V output at the corresponding labeled pads. The board is pre-assembled and ready to use with breadboards, jumper wires, or direct PCB integration — no additional component soldering needed.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module compatible with Arduino and Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The LM4040 Voltage Reference Module is fully compatible with Arduino, Raspberry Pi, and other popular microcontroller and single-board computer platforms. The 2.048V and 4.096V outputs are especially well-suited for use as the reference voltage input on ADC chips commonly used with these platforms, improving measurement precision significantly.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the advantage of having both 2.048V and 4.096V outputs?\u003c\/h4\u003e\n\u003cp\u003eA: The dual outputs give you flexibility for different applications. The 2.048V reference is ideal for 12-bit ADC systems where a mid-range reference improves resolution, while the 4.096V reference closely matches a 1mV-per-bit scale for many 12-bit ADCs — making calculations straightforward. Having both on one board saves space and cost.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the LM4040 Precision Voltage Reference Module do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The LM4040 Precision Voltage Reference Module provides two highly accurate, stable DC reference voltages — 2.048V and 4.096V — from a single compact board. 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The LM4040 Voltage Reference Module is fully compatible with Arduino, Raspberry Pi, and other popular microcontroller and single-board computer platforms. The 2.048V and 4.096V outputs are especially well-suited for use as the reference voltage input on ADC chips commonly used with these platforms, improving measurement precision significantly.\"}}, {\"@type\": \"Question\", \"name\": \"What is the advantage of having both 2.048V and 4.096V outputs?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The dual outputs give you flexibility for different applications. The 2.048V reference is ideal for 12-bit ADC systems where a mid-range reference improves resolution, while the 4.096V reference closely matches a 1mV-per-bit scale for many 12-bit ADCs — making calculations straightforward. 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