Vishay Semiconductor Opto Division
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VEMD8080

VEMD8080: Photodiode for Optical Sensors

Introduction

The VEMD8080 is a photodiode designed for optical sensors, offering high sensitivity and reliability. This entry provides an overview of the product, including its category, use, characteristics, packaging, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Product Overview

  • Category: Optoelectronics
  • Use: Optical sensing applications
  • Characteristics: High sensitivity, reliability
  • Package: Surface mount device (SMD)
  • Essence: Photodiode for converting light into electrical signals
  • Packaging/Quantity: Tape and reel packaging, quantity varies by supplier

Specifications

  • Wavelength Range: 350 nm to 1100 nm
  • Responsivity: 0.45 A/W at 850 nm
  • Dark Current: 2 nA
  • Reverse Light Current: 7 µA
  • Operating Temperature: -40°C to +110°C
  • Storage Temperature: -40°C to +125°C

Detailed Pin Configuration

The VEMD8080 has a standard SMD package with two pins. Pin 1 is the cathode (-) and pin 2 is the anode (+).

Functional Features

  • High sensitivity across a wide wavelength range
  • Low dark current for improved signal-to-noise ratio
  • Fast response time for rapid signal detection
  • Compact SMD package for easy integration into sensor modules

Advantages and Disadvantages

Advantages

  • High sensitivity enables accurate light detection
  • Low dark current enhances signal quality
  • Fast response time for real-time applications
  • Compact SMD package for space-constrained designs

Disadvantages

  • Limited to specific wavelength range
  • Susceptible to ambient light interference without proper shielding

Working Principles

The VEMD8080 operates based on the principle of internal photoelectric effect. When exposed to light within its specified wavelength range, the photodiode generates a photocurrent proportional to the incident light intensity.

Detailed Application Field Plans

The VEMD8080 is suitable for various optical sensing applications, including: - Ambient light sensing in display devices - Proximity sensing in mobile devices - Industrial automation for object detection - Medical devices for pulse oximetry - Automotive applications for light detection and ranging (LiDAR)

Detailed and Complete Alternative Models

  • VEMD8081: Similar performance with enhanced sensitivity in UV range
  • VEMD8082: Extended wavelength range for broader spectral coverage
  • VEMD8083: Higher speed and lower capacitance for fast signal processing

In conclusion, the VEMD8080 photodiode offers high sensitivity and reliability for optical sensing applications. Its compact SMD package, along with its functional features and specifications, make it a versatile choice for various design requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací VEMD8080 v technických řešeních

  1. What is the VEMD8080?

    • The VEMD8080 is a high-speed silicon PIN photodiode designed for visible light detection.

  2. What is the spectral range of the VEMD8080?

    • The VEMD8080 has a spectral range from 350 nm to 1100 nm, making it suitable for various visible and near-infrared applications.

  3. What are the typical applications of the VEMD8080?

    • Typical applications of the VEMD8080 include ambient light sensing, industrial automation, consumer electronics, and medical devices.

  4. What is the responsivity of the VEMD8080?

    • The responsivity of the VEMD8080 is typically around 0.45 A/W at 940 nm, making it highly sensitive to light in its operating range.

  5. What is the package type of the VEMD8080?

    • The VEMD8080 is available in a small, surface-mount package, making it suitable for compact designs and integration into various systems.

  6. What is the operating temperature range of the VEMD8080?

    • The VEMD8080 has an operating temperature range from -40°C to 125°C, allowing it to be used in a wide range of environmental conditions.

  7. Does the VEMD8080 require any external components for operation?

    • The VEMD8080 does not require any external components for basic operation, simplifying its integration into technical solutions.

  8. Can the VEMD8080 be used for gesture recognition applications?

    • Yes, the VEMD8080's high-speed response and sensitivity make it suitable for gesture recognition and proximity sensing applications.

  9. Is the VEMD8080 compatible with common microcontrollers and interface standards?

    • Yes, the VEMD8080 can be easily interfaced with common microcontrollers and supports standard interface protocols, such as I2C and SPI.

  10. Are there any application notes or reference designs available for the VEMD8080?

    • Yes, Vishay Semiconductor provides application notes and reference designs to assist engineers in implementing the VEMD8080 in their technical solutions.