TDA19978AHV15C185:

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Applications:	HDTV
Interface:	HDMI
Voltage - Supply:	1.8V, 3.3V
Package / Case:	144-LQFP Exposed Pad
Supplier Device Package:	144-HLQFP (20x20)
Mounting Type:	Surface Mount
Base Part Number:	TDA19978

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Introduction

A TDA19978AHV15C185, also called a “Bridge Driver”, is an integrated circuit chip from ON Semiconductor with specialized functionality for the user interface. It provides an efficient and cost-effective solution to bridge a variety of different digital signals within a given display interface. In this article, we will be discussing the application field and the working principle of the TDA19978AHV15C185.

Application Field

The TDA19978AHV15C185 is used in a variety of interface applications. The primary application field is DisplayPort and HDMI interfaces. DisplayPort is a computer connection protocol used primarily to connect computers to monitors and other display devices. The chip is also used in USB Type-C interfaces, some of which are now seen on many smartphones. The chip may also have applications in other interfaces, such as LVDS, FPD-Link, RGB and PDMI.The chip is integrated into the system design of various products including ultra-high definition 4K displays, laptops, PCs, monitors, set-top boxes, DVD players, and gaming consoles. It can also be found in high-end media streaming devices and digital signage.

Working Principle

The TDA19978AHV15C185 works as a bridge driver for transmitting digital signals between different interfaces. It functions as an interface between the source and the display. It receives signals from the source, such as a computer or a DVD player, and converts the signal into an appropriate format for the display.The chip is based on a differential R2R ladder architecture and utilizes an internal signal tracking architecture. This signal tracking architecture enables a faster response time and a lower voltage swing. This reduces power consumption and improves the overall performance of the display interface.The chip supports three different levels of output polarity invertors, allowing for easy implementation of inverting data and clock signals. The chip supports both 1x and 2x output drive and also supports multiple channel and dual pixel operation.

Conclusion

In conclusion, the TDA19978AHV15C185 is an integrated circuit chip from ON Semiconductor with specialized functionality for the user interface. It works as the bridge driver for transmitting digital signals between different interfaces and is used in a variety of DisplayPort, HDMI, USB Type-C, LVDS, FPD-Link, RGB and PDMI applications. The chip is based on a differential R2R ladder architecture and utilizes an internal signal tracking architecture that provides a fast response time and a low voltage swing, and it supports the three different levels of output polarity invertors, 1x and 2x output drive and multiple channel and dual pixel operation.

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