QD Devices Inc.
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REF191ES
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REF191ES

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - Provides a stable and precise voltage reference - Low temperature coefficient - High accuracy - Low power consumption

Package: SOP-8 (Small Outline Package)

Essence: The REF191ES is a voltage reference IC that generates a stable and accurate voltage for various electronic applications.

Packaging/Quantity: The REF191ES is typically sold in reels or tubes containing 250 units per package.

Specifications

  • Output Voltage Range: 1.225V to 5.5V
  • Initial Accuracy: ±0.2%
  • Temperature Coefficient: 50ppm/°C
  • Supply Voltage Range: 2.7V to 40V
  • Quiescent Current: 60µA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The REF191ES is an 8-pin IC with the following pin configuration:

  1. VOUT: Output Voltage
  2. NC: No Connection
  3. GND: Ground
  4. NC: No Connection
  5. VIN: Input Voltage
  6. NC: No Connection
  7. NC: No Connection
  8. VDD: Supply Voltage

Functional Features

  • High precision voltage reference
  • Low temperature coefficient ensures stability over a wide temperature range
  • Low power consumption for energy-efficient designs
  • Wide supply voltage range allows flexibility in various applications

Advantages and Disadvantages

Advantages: - Provides stable and accurate voltage reference - Low temperature coefficient ensures reliability in different environments - Low power consumption for energy-efficient designs - Wide supply voltage range allows versatility in applications

Disadvantages: - Limited output voltage range (1.225V to 5.5V) - Not suitable for applications requiring higher output voltages

Working Principles

The REF191ES utilizes a bandgap voltage reference circuit to generate a stable and accurate voltage. It compensates for temperature variations by employing a temperature-dependent current that cancels out the temperature coefficient of the base-emitter voltage of a bipolar transistor. This ensures a consistent output voltage regardless of temperature changes.

Detailed Application Field Plans

The REF191ES is commonly used in various electronic systems where a stable and precise voltage reference is required. Some typical application fields include:

  1. Analog-to-Digital Converters (ADCs)
  2. Digital-to-Analog Converters (DACs)
  3. Voltage regulators
  4. Power management circuits
  5. Sensor interfaces
  6. Precision measurement instruments

Detailed and Complete Alternative Models

  1. REF192ES: Similar to REF191ES, but with an extended output voltage range of 0.6V to 5.5V.
  2. REF193ES: Offers improved initial accuracy of ±0.1% compared to REF191ES.
  3. REF194ES: Provides a lower temperature coefficient of 25ppm/°C for enhanced stability.

These alternative models offer similar functionality to the REF191ES but may have specific advantages or features that suit different application requirements.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan REF191ES dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of REF191ES in technical solutions:

  1. Q: What is REF191ES? A: REF191ES is a precision voltage reference IC (integrated circuit) commonly used in technical solutions for accurate voltage measurements or as a stable reference voltage source.

  2. Q: What is the voltage range of REF191ES? A: The REF191ES has a voltage range of 2.5V to 5.5V, making it compatible with a wide range of power supply voltages.

  3. Q: How accurate is REF191ES? A: REF191ES offers high accuracy with a typical initial accuracy of ±0.05% and a maximum temperature drift of ±10ppm/°C.

  4. Q: Can REF191ES be used in battery-powered applications? A: Yes, REF191ES can be used in battery-powered applications due to its low power consumption, typically around 60µA.

  5. Q: Is REF191ES suitable for temperature-sensitive applications? A: Yes, REF191ES is designed to be stable over a wide temperature range, making it suitable for temperature-sensitive applications.

  6. Q: Can REF191ES be used as a voltage reference for analog-to-digital converters (ADCs)? A: Absolutely, REF191ES is commonly used as a voltage reference for ADCs to ensure accurate and consistent conversion results.

  7. Q: Does REF191ES require any external components for operation? A: Yes, REF191ES requires an external bypass capacitor for stability. The datasheet provides guidelines for selecting the appropriate capacitor.

  8. Q: Can REF191ES drive loads directly? A: No, REF191ES is not designed to drive heavy loads directly. It is recommended to use an operational amplifier or buffer to drive loads if necessary.

  9. Q: Is REF191ES available in different package options? A: Yes, REF191ES is available in various package options, including SOT-23 and SOIC, allowing flexibility in different circuit designs.

  10. Q: Where can I find more information about REF191ES? A: You can find detailed information about REF191ES, including its electrical characteristics, pin configuration, and application examples, in the datasheet provided by the manufacturer.