AN-2192 LM3492 12VAC, 7W LED Driver for AR111 Application (Rev. A)
Texas InstrumentsThe LM3492 demonstration board included in this package is designed for converting nominal 12VAC from electronic transformer output to drive seven series connected LEDs at 360mA average current. The
TVP5020 NTSC/PAL Digital Video Decoder Initialization
Texas InstrumentsThis application report describes the general requirements for initialization of the TVP5020 NTSC/PAL video decoder. The covered topics include hardware reset microcode download microcode file format conversion register initialization and register write/read latency issues.
WEBENCH® tools and the photodetector's stability
Texas InstrumentsThe first priority for a photosensing application is to design good stability into the transimpedance amplifier circuit. The Texas Instruments developers of WEBENCH® designer tools have conscientiously provided photosensing designs with stable 60° phase margins, or an approximate 8.7% overshoot from a step-input signal.
WEBENCH Designer tools have powerful software algorithms and visual interfaces that deliver complete power, lighting, and sensing applications in seconds. This enables the user to make value-based comparisons at a system and supply-chain level before a design is committed. One tool among others embedded in the WEBENCH environment is the photodiode portion of Sensor Designer. This article is specifically about the WEBENCH Sensor Designer’s built-in photodiode circuit stability.
Architecture and Function of the MSP430 14-Bit ADC
Texas InstrumentsThis application report describes the architecture and function of the 14-bit analog-to-digital converter (ADC) of the MSP430 family. The principles of the ADC are explained and software examples are given. The report also explains the function of all hardware registers in the ADC. The References section at the end of the report lists related application reports in the MSP430 14-bit ADC series.
Build high density, high refresh rate, multiplexing LED panel with TLC5958
Texas InstrumentsThis application report describes how to build high-density, high refresh rate, multiplexing panel with the TLC5958; a 48 channel, 16-bit ES-PWM LED driver with pre-charge FET, LED open detection and display data memory supporting 32-multiplexing.
Migrating from TMS320VC549 to TMS320VC5410 (Rev. A)
Texas InstrumentsThis document describes issues of interest related to migration from the TMS320VC549 to the TMS320VC5410. The objective of this document is to indicate differences between the two devices. Functions t
Using the CDCE72010 as a Frequency Synthesizer
Texas InstrumentsThis application report is a general guide for using the CDCE72010 as a frequency synthesizer. This document explains the methods to work with the phase-locked loop (PLL) of the CDCE72010 to achieve multiple outputfrequencies from any input frequency. It also describes the basic functionality and methods for using the device efficiently. Furthermore it describes the clock terminationmethod d
Running Demo via ddd on the DVEVM
Texas InstrumentsThe TMS320DM6446 device includes an ARM core which can run the very popular Linux® operating system. One of Linux strengths is its open source approach enabling developers a wide range of development tools from free open source debugger applications such as ddd to sophisticated IDE-based debuggers sold by independent software vendors such as MontaVista's® DevRocket™ and Green Hills&r
PWM DAC Using MSP430 High-Resolution Timer
Texas InstrumentsThe digital-to-analog converter (DAC) generates an analog output that is proportional to the digital input it receives. The pulse width modulation (PWM) DAC is one of the popular techniques to implement DAC functionality in MCUs that don’t have an integrated DAC module. The PWM DAC approach is not new but performance limitations have historically confined its use to low-resolution low-bandwidth
Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters
Texas InstrumentsDelta-Sigma Analog-to-Digital Converters are well known for their innate ability to resolve an analog input signal to very small LSB voltage ranges. The primarily applications for this type of product
An Easy Solution to Current Limiting an Op Amp
Texas InstrumentsMany circuits today not only require voltage regulation but they also need current regulation. Some systems draw excessive current during power on which can cause expensive system components to burn up due to improper powering of supplies. This is not the only problem associated with excessive currents. Some applications need to limit the current an op amp can provide to a specific load. This cir
Multiple TLC320AC01/02 Analog I/F Circuits on One TMS320C5x DSP Serial Port
Texas InstrumentsMany applications require a DSP to obtain information from multiple A/D channels and transmit to multiple D/A channels. This document provides the hardware and software for the connection between two AIC channels and one DSP serial port. The AIC connects to the 16-bit fixed-point DSP in the master/slave mode with no external hardware required. A summary of the AIC master/slave operation is incl
Setting TAS5717EVM/TAS5719EVM Environment Variables
Texas InstrumentsThis application report describes how to set the Microsoft® Windows® environment variables for correct I2C™ operation of the TAS5717EVM and TAS5719EVM evaluation modules (EVMs). The proper environment variables must be set in order for the TAS5717 and TAS5719 amplifiers to communicate properly over the I2C interface.
Throughout this document, the abbreviation TAS57xx applies to the entire family of related devices, unless otherwise indicated.
Decode TV IR Remote Control Signals Using Timer_A3
Texas InstrumentsThis application report describes the use of Timer_A3 to decode RC5 and SIRC TV IR remote control signals. The decoder described in this report is interrupt-driven and operates as a background functio
Configure the coefficients for Digital Biquad Filters in TLV320AIC3xxx family
Texas InstrumentsTLV320AIC3xxx family Configure the coefficients for Digital Biquad Filters in TLV320AIC3xxx family
Software Coding Guidelines for TMS320C5x Developers
Texas InstrumentsThis document provides guidelines to DSP application software developers on organizing and structuring software to facilitate its maintenance and ease its porting to any custom-defined digital signal processor (DSP) hardware platform. This application uses a PCMCIA-based TMS320C5x 16-bit fixed-point DSP card with an external connector for analog interfacing. Reference material for this application
Sending Power over Coax in DS90UB913A Designs
Texas InstrumentsThe DS90UB913A was designed as a serializer to support automotive camera designs. Automotive cameras are often located in remote positions such as bumpers or trunk lids and a major component of the system cost is the wiring. For this reason it is desirable to minimize the wiring to the camera. FPD III systems allow the video data along with a bidirectional control channel an
Why Use Oversampling when Undersampling Can Do the Job? (Rev. A)
Texas InstrumentsADS4149 Why Use Oversampling when Undersampling Can Do the Job?
TMS320C6000 Expansion Bus: Multiple DSPs to i80960Kx/Jx Microproessor Interface (Rev. A)
Texas InstrumentsThis application note describes interface between the TMS320C6000™ DSPs and the i80960Jx/Kx microprocessor via the TMS320C6000 DSP expansion bus. This application report discusses the bus arbitration the host to DSP and peer-to-peer DSP communication using the expansion bus synchronous mode.A block diagram of the interface and the glue logic VHDL code <
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