Buck Based LED Driver Using the PA5711

The buck coverter is a simple switching LED driver. It is non-isolated and can be used when the load voltage is less than 85% of the input supply voltage. In the simplest form this converter uses the PA5711 to control an external power transistor that switches the supply voltage across an inductor. View More..

Device Technology Comparison Chart

Comparison between GDT, MOVs and TVS Diodes View More..

Pop-Up-Noise Suppression Using Analog Switches

Due to the standard method of AC coupling in audio systems there is a real possibility of the phenomenon "Pop Up noise" when switching audio signals. This application note discusses ways to reduce noise when switching audio signals. View More..

High Speed USB Design Guide for Analog Devices

High speed USB design guide for analog devices. Contains board design, EMI/ESD guidelines, general routing and placement, high-speed USB trace spacing as well as other various rules of thumb for USB applications. View More..

Selecting an Audio CODEC

Audio CODEC IC's are at the heart of many different portable devices that feature both record and playback capabilities. While the basic product selection of input and output channels with their respective performance may be simple, todays devices offer many integrated features that can affect audio quality, as well as system cost, power requirements and design complexity. Understanding what these features bring to a portable application is needed to make the best choice. View More..

Programming the PA5750 CODEC

The PA5750 is a low power audio CODEC. The PA5750 requires communication to a ?C or a processor via I2C or SPI. This document will explain how to program and control the PA5750. All programs in this document are verified by the PA5750 evaluation board. The MCU used is a P89LV51RD2, software is based on KEIL C51. It is programmed using C language, which can be easily transferred to another MCU platform. View More..

PA4201 Application Note

The purpose of this application brief is to provide information on the operation and applications of the PA4201 Pop-Up-Noise-Killer (PUNK). View More..

Application for Dual SPDT Switches

Many mobile phones feature more functions to make them more attractive to the end user, like PDA, Digital camera, MP3 and FM radio. This requires sharing of interfaces in terms of connection pins. Handsets use shared pin designs by the adoption of Analog Switches. View More..

Application for Single SPDT Switches

Protek Devices Analog Products Group has identified a need for a single SPDT analog switch. This application note is to explain how the device can be utilized in various applications. View More..

EMI/ESD Filters for Cellular Phones

Cellular phones, as with all handheld and wireless devices are susceptible to the damaging effects of ESD transients. View More..

USB Protection Solutions - PLR0502

This application note explains the use TVS protection and USB applications. View More..

Control Port Protection - RS485 & RS422 Solutions

This application note gives a brief overview of using TVS devices for protecting RS-485 and RS-422 applications. View More..

DVI Solutions Using the PLR0502, PLR0504F and PLR0508

This application note gives a brief overview of using TVS devices for DVI applications. View More..

Ethernet Protection - A Whole Solution

Using TVS devices in combination with other types of protection technology to provide a whole protection solution for Ethernet applications. View More..

Understanding Network Interface I/O Protection

With the increase in the number of network interface and immunity standards, selecting a transient voltage suppression (TVS) device for I/O port protection has become a very confusing process for today's design engineer. View More..