Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Transceiver
Protocol:	RS232
Number of Drivers/Receivers:	4/5
Duplex:	Full
Receiver Hysteresis:	650mV
Data Rate:	120Kbps
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	28-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	28-SSOP
Base Part Number:	ADM211

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Introduction

The ADM211EARS-REEL is a device for transmitting and receiving data. It is a powerful integrated physical layer transceiver that provides a complete solution for applications such as automotive Ethernet, communication interface, Ethernet bus with 100Mbps data rate, and optical fiber network. This device has several innovative features such as time-division multiplexed (TDM) capability, Automatic bit synchronization, Automatic data scrambling, Multi-protocol operation, Manufacturing test features, and Long-term link stability.

Application Field

The ADM211EARS-REEL is mainly used in automotive Ethernet systems, wherein high-speed data communication is required. It is basically used as the interface between the electronic control unit (ECU) and the automobile body networks. This device serves as the physical layer transceiver for the in-vehicle Ethernet networks and its primary purpose is to receive and transmit digital data.The ADM211EARS-REEL helps in providing backward compatibility for existing 100 Mbps automotive networks and its TDM capability enables it to be used in two-lane twisted pairs as well as four-lane fiber networks. Moreover, its high speed and reliable operation assist in the construction of a high-speed,s enture in-vehicle network with considerable bandwidth. Similarly, this device can also be used for other forms of wired communication, such as broadband communication interface, PSTN, and Ethernet bus for industrial control, automation and PoE applications.

Working Principle

The working principle of the ADM211EARS-REEL is quite simple and straightforward. It consists of a physical layer transceiver unit, which works as the main signal transceiver. This physical layer transceiver unit consists of an ASB (Automatic bit synchronization) and an ASC (Automatic data scrambling) circuit.The physical layer transceiver unit is connected to a bus (Ethernet or fiber) and when a signal is received, the physical layer transceiver unit recognizes it as a “sync” signal. This signal is then passed through the ASB circuit, which checks for errors in the signal. Once the signal passes through the ASB circuit without any error, it is then sent through the ASC circuit, which scrambles the data and stores it in a secure memory module.Once the data is securely stored in the memory module, the physical layer transceiver unit then sends it out to the bus. If the data was sent using a twisted pair, it is then sent out as 6 Mbps up to a certain distance. If the data was sent using a fiber-optic cable, it is sent out as 100 Mbps.

Conclusion

The ADM211EARS-REEL is a powerful integrated physical layer transceiver for applications such as automotive Ethernet, communication interface, Ethernet bus with 100Mbps data rate, and optical fiber network. It works on the simple principle of receiving and transmitting data from a bus, such as Ethernet or fiber. This device is mainly used in automotive Ethernet systems and helps in providing backward compatibility for existing 100 Mbps automotive networks. Furthermore, it has several other innovative features such as time-division multiplexed (TDM) capability, Automatic bit synchronization, Automatic data scrambling, Multi-protocol operation, Manufacturing test features, and Long-term link stability.

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