LM4040D25QDBZRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Precision, Low Dropout, Micropower, Shunt Voltage Reference
• Package: SOT-23 (Small Outline Transistor 23)
• Essence: Provides a stable and accurate voltage reference for various electronic applications
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Voltage Output: 2.5V
• Initial Accuracy: ±0.1%
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 60µA typical
• Dropout Voltage: 200mV typical at 1mA load current

Detailed Pin Configuration

The LM4040D25QDBZRG4 has three pins:

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

Functional Features

• Provides a precise and stable voltage reference for accurate circuit operation.
• Low dropout voltage ensures efficient power utilization.
• Micropower consumption extends battery life in portable devices.
• Excellent initial accuracy and temperature coefficient ensure reliable performance over a wide temperature range.
• Small package size allows for space-saving integration into compact designs.

Advantages and Disadvantages

Advantages: - High precision and stability - Low dropout voltage - Low power consumption - Wide operating temperature range - Small package size

Disadvantages: - Limited output voltage options (only 2.5V in this model) - Not suitable for applications requiring higher voltage references

Working Principles

The LM4040D25QDBZRG4 is a shunt voltage reference IC. It utilizes a precision bandgap circuit to generate a stable 2.5V output voltage. The internal circuitry compensates for temperature variations, ensuring accurate performance over a wide temperature range. By connecting the VOUT pin to the desired circuit node, the LM4040D25QDBZRG4 provides a reliable and precise voltage reference for various electronic applications.

Detailed Application Field Plans

The LM4040D25QDBZRG4 finds applications in various fields, including:

1. Analog and Digital Circuits: Provides a stable voltage reference for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), operational amplifiers, and other precision analog and digital circuits.
2. Power Management: Used as a voltage reference in power management circuits, voltage regulators, battery charging systems, and power supply monitoring circuits.
3. Sensor Calibration: Ensures accurate calibration of sensors such as temperature sensors, pressure sensors, and humidity sensors.
4. Test and Measurement Equipment: Used as a reference voltage source in test and measurement equipment, oscilloscopes, multimeters, and data acquisition systems.
5. Automotive Electronics: Suitable for automotive applications requiring precise voltage references, such as engine control units (ECUs), airbag systems, and infotainment systems.

Detailed and Complete Alternative Models

1. LM4040AIM3-2.5/NOPB: SOT-23 package, 2.5V output voltage, ±0.5% initial accuracy.
2. LT1004CZ-2.5#PBF: TO-92 package, 2.5V output voltage, ±0.8% initial accuracy, low temperature coefficient.
3. REF5025AIDGKT: VSSOP package, 2.5V output voltage, ±0.05% initial accuracy, high precision.

These alternative models offer similar functionality and can be considered based on specific requirements and design constraints.

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