LM4040QDIM3-2.5/NOPB

Product Overview

Category

The LM4040QDIM3-2.5/NOPB belongs to the category of voltage references.

Use

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

Characteristics

• High accuracy and stability
• Low temperature coefficient
• Low dropout voltage
• Wide operating temperature range

Package

The LM4040QDIM3-2.5/NOPB is available in a small SOT-23 package.

Essence

This product serves as a reliable voltage reference, providing a stable and accurate voltage output for precise circuit operation.

Packaging/Quantity

The LM4040QDIM3-2.5/NOPB is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±0.1%
• Temperature Coefficient: 20ppm/°C
• Dropout Voltage: 60mV (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM4040QDIM3-2.5/NOPB has three pins:

1. VOUT: Output pin, provides the stable 2.5V reference voltage.
2. GND: Ground pin, connected to the circuit ground.
3. NC: No connection pin, not internally connected and can be left unconnected.

Functional Features

• Precise Voltage Reference: The LM4040QDIM3-2.5/NOPB ensures a highly accurate and stable 2.5V output voltage, making it suitable for applications requiring precise voltage references.
• Low Dropout Voltage: With a low dropout voltage of only 60mV, this voltage reference can operate efficiently even when the input voltage is close to the output voltage.
• Wide Operating Temperature Range: The LM4040QDIM3-2.5/NOPB can function reliably in a wide temperature range, from -40°C to +85°C.

Advantages and Disadvantages

Advantages

• High accuracy and stability ensure precise circuit operation.
• Low dropout voltage minimizes power dissipation.
• Small package size allows for space-saving designs.
• Wide operating temperature range enables versatile application possibilities.

Disadvantages

• Limited output voltage options (only 2.5V in this case).
• Requires external components for proper implementation.

Working Principles

The LM4040QDIM3-2.5/NOPB utilizes a bandgap reference circuit to generate a stable voltage output. It compensates for temperature variations by employing a proportional-to-absolute-temperature (PTAT) current source and a negative temperature coefficient (NTC) resistor. This ensures that the output voltage remains constant over a wide temperature range.

Detailed Application Field Plans

The LM4040QDIM3-2.5/NOPB finds applications in various fields, including:

1. Precision Instrumentation: It can be used as a voltage reference in precision measurement devices, ensuring accurate readings.
2. Analog-to-Digital Converters (ADCs): The LM4040QDIM3-2.5/NOPB provides a stable reference voltage for ADCs, enhancing their accuracy.
3. Power Management Systems: It can serve as a voltage reference in power management circuits, maintaining stable voltage levels for efficient power delivery.
4. Sensor Calibration: The LM4040QDIM3-2.5/NOPB is suitable for calibrating sensors that require a precise voltage reference.

Detailed and Complete Alternative Models

Some alternative models to the LM4040QDIM3-2.5/NOPB include:

1. LM4040AIM3-2.5/NOPB: Similar to the LM4040QDIM3-2.5/NOPB, but available in an SOT-23 package.
2. LM4040CIM3-2.5/NOPB: Offers the same voltage reference and accuracy, but with a different package option.
3. LT1021BCN8-2.5#PBF: A precision shunt voltage reference with a 2.5V output, available in an 8-pin DIP package.

These alternative models provide similar functionality and can be used as substitutes depending on specific requirements.

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