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ADR421BR-REEL7
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ADR421BR-REEL7

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Reference

Characteristics: - High precision - Low temperature coefficient - Low dropout voltage - Low noise - Wide operating temperature range

Package: SOT-23

Essence: The ADR421BR-REEL7 is a voltage reference IC that provides a stable and accurate output voltage for various electronic applications.

Packaging/Quantity: The ADR421BR-REEL7 is available in tape and reel packaging, with 3000 units per reel.

Specifications

  • Output Voltage Range: 2.048V ± 0.02%
  • Initial Accuracy: ±0.1%
  • Temperature Coefficient: 5ppm/°C
  • Dropout Voltage: 300mV (typical)
  • Supply Voltage Range: 2.7V to 18V
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The ADR421BR-REEL7 has three pins:

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

Functional Features

  • High accuracy and stability: The ADR421BR-REEL7 provides a precise and stable output voltage, ensuring reliable performance in various applications.
  • Low noise: The low noise characteristic of this voltage reference IC makes it suitable for noise-sensitive applications.
  • Low dropout voltage: With a low dropout voltage, the ADR421BR-REEL7 can operate efficiently even when the input voltage is close to the output voltage.
  • Wide operating temperature range: This IC can withstand extreme temperatures, making it suitable for use in harsh environments.

Advantages and Disadvantages

Advantages: - High precision and stability - Low noise - Wide operating temperature range - Small package size (SOT-23) - Low dropout voltage

Disadvantages: - Limited output voltage range - Relatively high initial accuracy

Working Principles

The ADR421BR-REEL7 is based on a bandgap reference circuit, which generates a stable voltage reference using the temperature-dependent characteristics of semiconductor materials. This reference voltage is then compared to an internal voltage divider network to produce the desired output voltage.

Detailed Application Field Plans

The ADR421BR-REEL7 is commonly used in various applications, including:

  1. Precision analog-to-digital converters (ADCs)
  2. Digital-to-analog converters (DACs)
  3. Voltage regulators
  4. Battery-powered devices
  5. Portable instrumentation
  6. Industrial control systems

Detailed and Complete Alternative Models

  1. ADR431BRZ: Similar specifications and features, but with a different output voltage range (1.24V ± 0.02%)
  2. ADR441BRZ: Higher output voltage range (4.096V ± 0.02%) with similar characteristics
  3. ADR452BRZ: Lower initial accuracy (±0.2%) but wider operating temperature range (-55°C to +125°C)

These alternative models provide flexibility in choosing the appropriate voltage reference IC based on specific application requirements.

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Énumérez 10 questions et réponses courantes liées à l'application de ADR421BR-REEL7 dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of ADR421BR-REEL7 in technical solutions:

  1. Q: What is the ADR421BR-REEL7?

    • A: The ADR421BR-REEL7 is a precision voltage reference IC manufactured by Analog Devices.

  2. Q: What is the voltage range of the ADR421BR-REEL7?

    • A: The ADR421BR-REEL7 has a voltage range of 2.048V with an initial accuracy of ±0.02%.

  3. Q: What is the purpose of using the ADR421BR-REEL7 in technical solutions?

    • A: The ADR421BR-REEL7 is commonly used as a stable voltage reference in various applications, such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and precision measurement systems.

  4. Q: What is the temperature coefficient of the ADR421BR-REEL7?

    • A: The temperature coefficient of the ADR421BR-REEL7 is typically 5 ppm/°C.

  5. Q: Can the ADR421BR-REEL7 operate in harsh environments?

    • A: Yes, the ADR421BR-REEL7 is designed to operate in a wide temperature range from -40°C to +125°C, making it suitable for use in harsh environments.

  6. Q: How much current does the ADR421BR-REEL7 consume?

    • A: The ADR421BR-REEL7 consumes very low quiescent current, typically around 1.5 mA.

  7. Q: Is the ADR421BR-REEL7 available in different package options?

    • A: Yes, the ADR421BR-REEL7 is available in a small SOT-23 package, which makes it suitable for space-constrained applications.

  8. Q: Can the ADR421BR-REEL7 be used as a voltage reference for battery-powered devices?

    • A: Yes, the low quiescent current and wide operating temperature range of the ADR421BR-REEL7 make it suitable for use in battery-powered devices.

  9. Q: Does the ADR421BR-REEL7 require any external components for operation?

    • A: No, the ADR421BR-REEL7 is a standalone voltage reference and does not require any external components for operation.

  10. Q: Are there any application notes or reference designs available for the ADR421BR-REEL7?

    • A: Yes, Analog Devices provides application notes and reference designs that can help users understand and implement the ADR421BR-REEL7 in their technical solutions. These resources can be found on the Analog Devices website.