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DP83822IRHBR: A Comprehensive Product Overview

The DP83822IRHBR is a single-port, 10/100 Mbps Ethernet Physical Layer (PHY) transceiver developed by Texas Instruments (TI). This part is designed to provide highly reliable Ethernet connectivity with low power consumption, making it ideal for a wide range of industrial, automotive, and embedded applications. This article provides an in-depth look at the DP83822IRHBR, its key features, technical specifications, applications, and frequently asked questions (FAQs), as well as a detailed decoding of the part number. Additionally, it includes a brief introduction to its manufacturer, Texas Instruments.

Product Description

The DP83822IRHBR is a robust, feature-rich Ethernet PHY transceiver that complies with the IEEE 802.3 standards for Fast Ethernet (10Base-T and 100Base-TX). It is designed to support both half-duplex and full-duplex communication, ensuring compatibility across various network configurations. This PHY transceiver is particularly optimized for industrial and automotive use cases due to its extended temperature range, low power consumption, and small form factor.

The device integrates an array of advanced features such as link status detection, auto-negotiation, and energy-efficient Ethernet (EEE) to reduce power consumption during periods of low network activity. Its compact 32-pin VQFN (RHBR) package allows for easy integration into space-constrained designs, making it an ideal choice for applications where board space is at a premium.

Features of the DP83822IRHBR

The DP83822IRHBR offers several key features that make it an attractive solution for Ethernet PHY applications:

  1. 10/100 Mbps Ethernet PHY: Supports both 10 Mbps and 100 Mbps transmission rates, offering flexibility for different network environments.

  2. Extended Industrial Temperature Range: Operates within a wide temperature range of -40°C to 85°C, making it suitable for harsh industrial and automotive environments.

  3. Low Power Consumption: Power-saving features such as Wake-on-LAN (WoL) and Energy-Efficient Ethernet (EEE) reduce power usage during idle periods, contributing to overall system efficiency.

  4. Auto-negotiation: Automatically negotiates the best possible speed and duplex mode for the connected devices, simplifying network setup.

  5. Integrated Cable Diagnostics: Provides advanced cable diagnostics capabilities to detect and resolve issues related to cabling, such as open or short circuits.

  6. Flexible Clocking Options: Supports both 25 MHz and 50 MHz reference clocks, offering design flexibility depending on system requirements.

  7. Small Form Factor: The 32-pin VQFN package is compact and well-suited for designs where board space is limited.

  8. Robust EMC Immunity: Designed to perform well in electromagnetic environments, ensuring stable and reliable operation even in industrial settings.

  9. MDI/MDIX Auto-crossover: Eliminates the need for crossover cables by automatically switching between straight-through and crossover cable configurations.

  10. JTAG Boundary Scan: Allows for advanced testing and debugging capabilities via the JTAG interface.

Detailed Specifications

Here are the detailed technical specifications of the DP83822IRHBR:

  • Standards: IEEE 802.3, 10Base-T, 100Base-TX
  • Data Rate: 10 Mbps (10Base-T), 100 Mbps (100Base-TX)
  • Supply Voltage: 3.3V for PHY core, 1.8V to 3.3V for I/O
  • Power Consumption: Typical 120 mW at 100 Mbps, with power-saving modes
  • Operating Temperature: -40°C to 85°C
  • Package: 32-pin VQFN (5mm x 5mm)
  • Auto-negotiation: Yes
  • Cable Diagnostics: Yes
  • MDI/MDIX Auto-crossover: Yes
  • EMC Performance: Robust immunity to electromagnetic interference (EMI)
  • Clock Options: 25 MHz or 50 MHz reference clock
  • Interfaces: RMII, MII
  • JTAG Interface: Yes

Applications

The DP83822IRHBR is used in a wide variety of applications due to its flexibility and robust design. Some of the primary applications include:

  1. Industrial Automation: Ensuring reliable Ethernet connectivity in factory automation, robotics, and process control systems that require robust performance in harsh environments.

  2. Automotive Networking: Providing high-speed networking for automotive infotainment systems, advanced driver assistance systems (ADAS), and vehicle-to-everything (V2X) communications.

  3. Embedded Systems: Enabling Ethernet communication in microcontroller-based designs, such as IoT devices, home automation systems, and networked sensors.

  4. Security Systems: Used in IP cameras and other security devices that require reliable Ethernet communication for video transmission and monitoring.

  5. Telecommunications: Deployed in networking infrastructure, such as switches and routers, that require fast and reliable Ethernet connectivity.

  6. Energy and Power Systems: Ensuring reliable communication between energy meters, power monitoring systems, and smart grid equipment.

Decoding the DP83822IRHBR Part Number

Understanding how to decode the part number helps in identifying the specific features and package details of the component. Here’s a breakdown of DP83822IRHBR:

  • DP: Indicates a digital product series.
  • 83822: Denotes the specific product family, which in this case is an Ethernet PHY transceiver.
  • I: Represents the industrial temperature range (-40°C to 85°C).
  • RHB: Specifies the package type, which is a 32-pin VQFN package.
  • R: Denotes tape and reel packaging, which is commonly used for automated assembly.

Frequently Asked Questions (FAQs)

  1. What is the power consumption of the DP83822IRHBR?

    • The typical power consumption is around 120 mW at 100 Mbps, with energy-saving features like EEE reducing power usage during idle periods.
  2. Can the DP83822IRHBR operate in harsh environments?

    • Yes, it is designed to operate within an extended temperature range of -40°C to 85°C, making it suitable for industrial and automotive applications.
  3. What interface options does the DP83822IRHBR support?

    • It supports both RMII (Reduced Media Independent Interface) and MII (Media Independent Interface), allowing flexibility in connecting to different MAC (Media Access Controller) devices.
  4. Does the DP83822IRHBR support auto-negotiation?

    • Yes, it supports auto-negotiation, allowing it to automatically configure the best speed and duplex mode with the connected device.
  5. Is the DP83822IRHBR compliant with IEEE standards?

    • Yes, it complies with IEEE 802.3 standards for 10Base-T and 100Base-TX Ethernet.
  6. What packaging options are available for this part?

    • The DP83822IRHBR is available in a 32-pin VQFN package, which is ideal for space-constrained applications.
  7. What are the clock input options for the DP83822IRHBR?

    • It can use either a 25 MHz or 50 MHz reference clock, providing design flexibility depending on system requirements.
  8. Does the DP83822IRHBR include cable diagnostics features?

    • Yes, it includes integrated cable diagnostics to detect issues such as open or short circuits in the cabling.
  9. What is the maximum data rate supported by the DP83822IRHBR?

    • It supports data rates of up to 100 Mbps for Fast Ethernet (100Base-TX) and 10 Mbps for Ethernet (10Base-T).
  10. Is the DP83822IRHBR suitable for automotive applications?

    • Yes, its robust design and extended temperature range make it well-suited for automotive networking applications.

About Texas Instruments

Texas Instruments (TI) is a global leader in semiconductor design and manufacturing, with a focus on creating innovative solutions for analog and embedded processing applications. TI’s portfolio spans a wide range of industries, including automotive, industrial, communications, and consumer electronics. With decades of experience and a commitment to quality, TI continues to be a trusted provider of high-performance electronic components like the DP83822IRHBR, offering reliable solutions for demanding applications.

Conclusion

The DP83822IRHBR from Texas Instruments is a highly versatile and reliable Ethernet PHY transceiver, well-suited for applications requiring robust network connectivity in industrial and automotive environments. Its low power consumption, flexible clocking options, integrated diagnostics, and compact package make it a standout solution in Ethernet PHY designs. Whether used in industrial automation, automotive systems, or embedded networks, the DP83822IRHBR delivers reliable performance and supports advanced networking capabilities.

By selecting the DP83822IRHBR, designers can take advantage of Texas Instruments’ proven track record of delivering high-quality semiconductor products that meet the demands of modern applications.


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