REF2940AIDBZT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: High precision, low dropout voltage, low quiescent current
• Package: SOT-23-3
• Essence: Provides a stable and accurate voltage reference for various electronic applications
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 100ppm/°C
• Dropout Voltage: 400mV
• Quiescent Current: 60µA
• Line Regulation: 0.1%/V
• Load Regulation: 0.1%/mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The REF2940AIDBZT is a three-pin device with the following pin configuration:

• Pin 1: VOUT (Output Voltage)
• Pin 2: GND (Ground)
• Pin 3: VIN (Input Voltage)

Functional Features

• High Precision: The REF2940AIDBZT provides a highly accurate output voltage of 2.5V, ensuring precise voltage references in electronic circuits.
• Low Dropout Voltage: With a dropout voltage of only 400mV, this IC can operate efficiently even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The quiescent current of 60µA ensures minimal power consumption, making it suitable for battery-powered applications.
• Excellent Line and Load Regulation: The REF2940AIDBZT maintains a stable output voltage despite variations in input voltage and load conditions.
• Wide Operating Temperature Range: It can operate reliably in extreme temperature environments ranging from -40°C to +125°C.

Advantages and Disadvantages

Advantages: - High precision and accuracy - Low dropout voltage - Low quiescent current consumption - Excellent line and load regulation - Wide operating temperature range

Disadvantages: - Limited output voltage options (fixed at 2.5V) - Not suitable for applications requiring higher output voltages

Working Principles

The REF2940AIDBZT is based on a bandgap voltage reference circuit. It utilizes the temperature-dependent characteristics of semiconductor materials to generate a stable reference voltage. This voltage is then compared to an internal voltage divider network, resulting in a precise output voltage of 2.5V.

Detailed Application Field Plans

The REF2940AIDBZT is widely used in various electronic applications, including:

1. Power Supply Regulation: It can be employed as a voltage reference in power supply circuits to ensure stable and accurate output voltages.
2. Analog-to-Digital Converters (ADCs): The REF2940AIDBZT provides a reliable reference voltage for ADCs, enhancing the accuracy of analog-to-digital conversion.
3. Sensor Calibration: It is utilized in sensor calibration circuits to establish a precise reference voltage for accurate sensor measurements.
4. Battery-Powered Devices: Due to its low quiescent current and low dropout voltage, it is suitable for battery-powered devices that require efficient power management.

Detailed and Complete Alternative Models

1. REF3030AIDBZT: Similar to REF2940AIDBZT but with a fixed output voltage of 3.0V.
2. REF3112AIDBZT: Provides a fixed output voltage of 1.2V, suitable for applications requiring lower reference voltages.
3. REF5020AIDBZT: Offers a higher output voltage of 5.0V, suitable for applications requiring higher reference voltages.

These alternative models provide similar functionality to the REF2940AIDBZT but with different fixed output voltage options.

In conclusion, the REF2940AIDBZT is a high-precision voltage reference IC with low dropout voltage and quiescent current. It offers excellent line and load regulation, making it suitable for various electronic applications. Its working principle is based on a bandgap voltage reference circuit. Alternative models with different output voltage options are available to cater to specific application requirements.