This application report discusses some common methods for reducing noise in the analog input circuitry of a resistive touch screen controller. In terms of hardware design PCB layout and grounding are critical; the additional noise-decoupling capacitor built into a touch screen controller input pin may also help. On the software side several simple widely-applied filtering algorithms are present
TPS62150, TPS62150A, TPS62140, TPS62140A, TPS62130, TPS62130A Using the TPS62150 in a Split Rail Topology /PMP/Advanced_Low_Power/Low_Power_DC-DC/2-App_Reports
Many memory-module manufacturers are turning to low-profile (1U) DIMM designs that significantly increase memory density in computer workstations and servers. The reduction in DIMM height consequently
This application report discusses the Sallen-Key architecture. The report gives a general overview and derivation of the transfer function followed by detailed discussions of low-pass and high-pass filters including design information and ideal and non-ideal operation. To illustrate the limitations of real circuits data on low-pass and high-pass filters using the Texas Instruments THS3001 is i
This document discusses the power consumption of the Texas Instruments TMS320C6418 digital signal processor (DSP). Power consumption on TMS320C64x™ devices is highly application-dependent. A spreadsheet is provided to model power consumption for the user's application. To get good results from the spreadsheet realistic usage parameters must be entered. The low-core voltage and other power d
This design idea provides a simple non-isolated AC/DC power supply for low power applications such assmart grid E-meter applications. The design uses a capacitive-dropper front-end combined with aLM46000 SIMPLE SWITCHER® buck regulator from Texas Instruments. The circuit provides 3.3 V at aminimum of 50 mA from a line supply of 90 VAC to 265 VAC. Theory of operation as well as designequa
The reference design and application examples shown in this document help implement a positive-charge pump doubler show how to drive an isolation FET and show how to perform voltage conversion with the TPS65160.The TPS65160 offers a compact power supply solution to provide all four voltages required by a thin-film transitor (TFT) LCD panel. With its high-current capabilities the device is i
This application report describes how to interface the DAC7811 low-glitch, 12-bit resolution, and current output multiplying digital-to-analog converter (MDAC) to the MSP430F449 mixed signal microcont
This report discusses companding routines. Companding is required for applications that use codec devices such as in public and private telephone networks. With the speed and versatility of the TMS320 companding can be performed in either software or hardware. The report describes both the A-law and mu-law software companding methods. Programs are also provided to show how the software compa
This application report illustrates how to generate various forms of triangle and trapezoid waves using the versatile programmable high-end timer (N2HET). The examples can be run in either the Hercules hardware development kit (HDK) or the Launchpad™ development kit. The application report shows the N2HET program examples the steps to setting up the N2HET registers as well as basic system s