ADR421BR

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Reference

Characteristics: - High Accuracy - Low Dropout Voltage - Low Temperature Coefficient - Low Quiescent Current

Package: SOT-23

Essence: ADR421BR is a precision voltage reference IC that provides a stable and accurate output voltage.

Packaging/Quantity: The ADR421BR is available in a SOT-23 package and is typically sold in reels of 3000 units.

Specifications

Output Voltage Range: 2.048V ± 0.02%
Initial Accuracy: ±0.1%
Temperature Coefficient: 5 ppm/°C
Quiescent Current: 120 µA
Dropout Voltage: 300 mV
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The ADR421BR has three pins:

VOUT: Output Voltage Pin
GND: Ground Pin
VIN: Input Voltage Pin

Functional Features

High accuracy and stability over temperature and time
Low power consumption
Wide operating temperature range
Low dropout voltage for efficient operation
Excellent line and load regulation

Advantages

Precise and stable output voltage
Low quiescent current for power-saving applications
Wide operating temperature range allows for use in various environments
Small package size enables space-constrained designs
Low dropout voltage ensures efficient power conversion

Disadvantages

Limited output voltage range
Higher initial cost compared to standard voltage references
Sensitivity to external noise and interference

Working Principles

The ADR421BR utilizes bandgap voltage reference technology to generate a precise and stable output voltage. It employs a combination of analog circuitry and temperature compensation techniques to achieve high accuracy and low temperature coefficient.

Detailed Application Field Plans

The ADR421BR is commonly used in applications that require a stable and accurate voltage reference. Some typical application fields include:

Precision analog-to-digital converters (ADCs)
Data acquisition systems
Industrial instrumentation
Medical devices
Portable electronic devices

Detailed and Complete Alternative Models

ADR431BR: Similar specifications, but with a different output voltage range (1.24V ± 0.02%)
ADR441BR: Higher initial accuracy (±0.05%) and lower dropout voltage (200 mV)
ADR451BR: Lower quiescent current (80 µA) and wider operating temperature range (-55°C to +125°C)

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

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan ADR421BR dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of ADR421BR in technical solutions:

Q: What is ADR421BR?
- A: ADR421BR is a precision voltage reference IC that provides a stable and accurate voltage output.
Q: What is the voltage range of ADR421BR?
- A: The voltage range of ADR421BR is typically between 2.5V and 5.0V.
Q: What is the purpose of using ADR421BR in technical solutions?
- A: ADR421BR is commonly used as a reference voltage source for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other precision measurement or control circuits.
Q: How accurate is ADR421BR?
- A: ADR421BR has a high initial accuracy of typically ±0.05% and a low temperature coefficient of typically 15 ppm/°C, ensuring precise and stable voltage references.
Q: Can ADR421BR operate in harsh environments?
- A: Yes, ADR421BR is designed to operate over a wide temperature range (-40°C to +125°C) and is suitable for use in various industrial and automotive applications.
Q: Does ADR421BR require external components for operation?
- A: Yes, ADR421BR requires an external decoupling capacitor for stability and noise reduction. The datasheet provides recommended values and guidelines.
Q: Can ADR421BR be powered from a single supply voltage?
- A: Yes, ADR421BR can be powered from a single positive supply voltage, typically ranging from 2.7V to 18V.
Q: Is ADR421BR available in different package options?
- A: Yes, ADR421BR is available in various package options, including SOT-23 and SOIC, allowing for flexibility in PCB layout and integration.
Q: Can ADR421BR be used in battery-powered applications?
- A: Yes, ADR421BR has low quiescent current consumption (typically 60 µA), making it suitable for battery-powered devices where power efficiency is crucial.
Q: Are there any application notes or reference designs available for ADR421BR?
- A: Yes, the manufacturer provides application notes and reference designs that offer guidance on using ADR421BR in different circuit configurations and applications.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.