REF102BU

Product Overview

Category: Voltage Reference
Use: Provides a stable voltage reference for precision analog circuits
Characteristics: High accuracy, low temperature coefficient, low dropout voltage
Package: TO-92, SOT-23, SOIC-8
Essence: Precision voltage reference
Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±0.05%
• Temperature Coefficient: 10ppm/°C
• Dropout Voltage: 200mV
• Supply Voltage Range: 4V to 30V
• Quiescent Current: 1.5mA

Detailed Pin Configuration

The REF102BU has three pins:

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

Functional Features

• High accuracy: The REF102BU provides a precise output voltage of 2.5V with an initial accuracy of ±0.05%.
• Low temperature coefficient: It exhibits a low temperature coefficient of 10ppm/°C, ensuring stability over a wide temperature range.
• Low dropout voltage: With a dropout voltage of only 200mV, it can operate efficiently even with low input voltages.
• Wide supply voltage range: The REF102BU can accept supply voltages ranging from 4V to 30V, making it versatile for various applications.

Advantages and Disadvantages

Advantages: - High accuracy ensures reliable performance in precision analog circuits. - Low temperature coefficient guarantees stability across different operating temperatures. - Low dropout voltage allows operation with low input voltages. - Wide supply voltage range offers flexibility in system design.

Disadvantages: - Limited output voltage options (only 2.5V). - Relatively high quiescent current (1.5mA) may impact power consumption in battery-powered applications.

Working Principles

The REF102BU is based on a bandgap voltage reference circuit, which utilizes the temperature-dependent characteristics of semiconductor materials to generate a stable output voltage. It employs a combination of bipolar and CMOS technologies to achieve high accuracy and low temperature coefficient.

Detailed Application Field Plans

The REF102BU finds extensive use in various precision analog circuits, including:

1. Data acquisition systems
2. Instrumentation and measurement equipment
3. Industrial control systems
4. Medical devices
5. Automotive electronics
6. Power management circuits

Detailed and Complete Alternative Models

1. REF102AU: Similar specifications but available in a different package (SOIC-8)
2. REF102CU: Higher initial accuracy (±0.02%) but with a slightly higher temperature coefficient (15ppm/°C)
3. REF102DU: Lower dropout voltage (150mV) but with a reduced supply voltage range (4V to 20V)

These alternative models provide options for different application requirements while maintaining the core functionality of the REF102BU.

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