LM4040DEM3-2.5

Product Overview

Category

The LM4040DEM3-2.5 belongs to the category of precision voltage references.

Use

It is commonly used as a stable voltage reference in various electronic circuits.

Characteristics

• High precision: The LM4040DEM3-2.5 provides a highly accurate output voltage.
• Low temperature coefficient: It exhibits minimal variation in voltage with changes in temperature.
• Low power consumption: The device operates efficiently, consuming minimal power.
• Small package size: The LM4040DEM3-2.5 comes in a compact package, making it suitable for space-constrained applications.
• Wide operating range: It can operate within a wide range of input voltages.

Package and Quantity

The LM4040DEM3-2.5 is available in a small SOT-23 package. It is typically sold in reels containing a specified quantity of units.

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±0.1%
• Temperature Coefficient: 50ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.7V to 10V
• Quiescent Current: 60µA (typical)

Pin Configuration

The LM4040DEM3-2.5 has three pins:

1. VOUT: Output voltage pin.
2. GND: Ground reference pin.
3. VIN: Input voltage pin.

Functional Features

• Precision voltage reference: The LM4040DEM3-2.5 provides a stable and accurate voltage reference for use in various applications.
• Low dropout voltage: It operates with a low dropout voltage, ensuring efficient performance even with low input voltages.
• Low output impedance: The device exhibits a low output impedance, allowing it to drive loads with minimal voltage drop.
• Short-circuit protection: The LM4040DEM3-2.5 incorporates short-circuit protection, safeguarding the device and the connected circuitry.

Advantages and Disadvantages

Advantages

• High precision and accuracy.
• Low temperature coefficient ensures stable performance across varying temperatures.
• Small package size allows for easy integration into compact designs.
• Wide operating range provides flexibility in different applications.

Disadvantages

• Limited output voltage options (only 2.5V in this case).
• Relatively higher cost compared to some other voltage references.

Working Principles

The LM4040DEM3-2.5 is based on a bandgap voltage reference circuit. It utilizes a combination of bipolar and CMOS technologies to achieve high precision and stability. The internal circuitry compensates for temperature variations, ensuring consistent output voltage over a wide temperature range.

Detailed Application Field Plans

The LM4040DEM3-2.5 finds application in various fields, including:

1. Precision analog circuits: It serves as a stable voltage reference for accurate measurements in instrumentation systems.
2. Data converters: It provides a precise reference voltage for analog-to-digital converters, ensuring accurate conversion.
3. Power management: The LM4040DEM3-2.5 can be used in power supply circuits to maintain a stable voltage level.
4. Sensor calibration: It is employed in sensor calibration circuits to provide a reliable reference voltage for accurate sensor readings.

Detailed Alternative Models

Some alternative models that offer similar functionality to the LM4040DEM3-2.5 include:

1. LT6654: Precision voltage reference with low drift and noise characteristics.
2. MAX619: Ultra-low-power voltage reference suitable for battery-powered applications.
3. REF5025: High-precision voltage reference with low temperature coefficient and excellent long-term stability.

These alternative models can be considered based on specific requirements and application needs.

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