REF02AU/2K5G4

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - High precision voltage reference - Low temperature coefficient - Low output noise - Wide operating temperature range - Small package size

Package: TO-92

Essence: The REF02AU/2K5G4 is a high-precision voltage reference IC used to provide a stable and accurate voltage reference in various electronic circuits.

Packaging/Quantity: The REF02AU/2K5G4 is available in a TO-92 package, which is a small plastic package with three leads. It is typically sold in reels or tubes containing multiple units.

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±0.05%
• Temperature Coefficient: 10ppm/°C
• Output Noise Voltage: 3µVp-p
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage: 7V to 36V
• Quiescent Current: 1.5mA

Detailed Pin Configuration

The REF02AU/2K5G4 has three pins:

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

Functional Features

• High Precision: The REF02AU/2K5G4 provides a highly accurate and stable output voltage of 2.5V, making it suitable for precision applications.
• Low Temperature Coefficient: With a temperature coefficient of only 10ppm/°C, the voltage reference remains stable over a wide temperature range.
• Low Output Noise: The low output noise voltage of 3µVp-p ensures minimal interference in sensitive circuits.
• Wide Operating Temperature Range: The REF02AU/2K5G4 can operate reliably in temperatures ranging from -40°C to +85°C.
• Small Package Size: The TO-92 package is compact, allowing for easy integration into space-constrained designs.

Advantages and Disadvantages

Advantages: - High precision and stability - Low temperature coefficient - Low output noise - Wide operating temperature range - Compact package size

Disadvantages: - Limited output voltage options (only 2.5V) - Relatively high quiescent current compared to some other voltage references

Working Principles

The REF02AU/2K5G4 utilizes a bandgap voltage reference circuit to generate a stable and accurate output voltage. It compensates for temperature variations by employing a combination of bipolar and CMOS technologies, resulting in a low temperature coefficient. The internal circuitry ensures minimal output noise and high precision.

Detailed Application Field Plans

The REF02AU/2K5G4 finds applications in various fields, including:

1. Precision Instrumentation: It is used as a voltage reference in precision measurement instruments such as multimeters, oscilloscopes, and data acquisition systems.
2. Analog-to-Digital Converters (ADCs): The REF02AU/2K5G4 provides a stable reference voltage for ADCs, ensuring accurate conversion of analog signals.
3. Voltage Regulators: It serves as a precise voltage reference for voltage regulators, improving their overall performance and stability.
4. Sensor Calibration: The REF02AU/2K5G4 is employed in sensor calibration circuits to provide a reliable and accurate reference voltage.

Detailed and Complete Alternative Models

1. REF01AU/2K5G4: Similar to the REF02AU/2K5G4 but with an output voltage of 1.25V.
2. REF03AU/2K5G4: Similar to the REF02AU/2K5G4 but with an output voltage of 5V.
3. LT1021-2.5: A precision voltage reference IC with a 2.5V output voltage and low temperature coefficient.

These alternative models offer different output voltages while maintaining similar characteristics and performance to the REF02AU/2K5G4.

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