DS26334GNA3+

What is the DS26334GNA3+ & its Application Field

The DS26334GNA3+ is a 3.3V voltage-mode line interface circuit, which is designed to meet all current and proposed requirements of the TIA/EIA-232-F, EIA/TIA-423-B, V.11, V.24, and V.28 standards. Also known as a serial line transceiver, this device provides the electrical interface between the data terminal equipment and the data local equipment and between two data systems. It is designed to operate over a single twisted-pair communications line and can reach transmission speeds of up to 76.8 Kb/s in asynchronous mode.

Application Field of the DS26334GNA3+ and Its Working Principle

This device is used for telecommunication applications such as modems, fax machines, telecom switches and routers, computers, RS-485 remote data links, wire networks, etc. The working principle of the DS26334GNA3+ can be divided into two parts, the transmitter and, the receiver.

Transmitter Part of the DS26334GNA3+

The DS26334GNA3+ transmitter part is designed to provide reliable communication services while withstanding the environmental disturbances that frequently occur on the transmission line. The transmitter consists of two parts: voltage mode drivers and polarity discrimination circuits. The voltage mode drivers are designed to output a signal that can be directly coupled to a twisted-pair line. The polarity discrimination circuit is designed to detect any polarity reversal in the input data and then detect the logic state of the data.

Receiver Part of the DS26334GNA3+

The DS26334GNA3+ receiver part has been made for a high-speed bi-directional communication. It is also able to interpret and distinguish digital data from the noise on the transmission line. It consists of a low-noise antialiasing filter, automatic gain control (AGC), data slicer, loss of signal (LOS) detection circuit and a logic decision circuit. The filter acts to reject the noise present on the line, the AGC adjusts the gain of the receiver in order to ensure a constant signal strength for optimal data interpretation, the data slicer circuit detects the out of the signal and finally, the logic decision circuit converts the recovered analogue signal into a digital signal.

Conclusion

The DS26334GNA3+ is a 3.3V voltage-mode line interface circuit, designed to meet the current and proposed requirements of various standards. It is used for telecommunication applications such as modems, fax machines, telecom switches and routers, computers, RS-485 remote data links, wire networks, etc. Its transmitter part is comprised of voltage mode drivers and polarity discrimination circuits. Its receiver part is made for a high-speed bi-directional communication and consists of a filter, AGC, data slicer, and LOS detection circuit. With all its components combined, the DS26334GNA3+ makes a reliable option for digital communication.