Power Management Design for Applications Processors

This document explains how the EVM Application #3 creates a 2- channel sine wave generator using the 12-bit digital-to-analog converter (DAC) of the Texas Instruments (TI™) TMS320F240 Evaluation Module (EVM). It contains:

An overview that explains how this application functions

• Information on the two modules used
• Information on how to use commands in the debugger environment
• Equations for calculating either the frequency of a sine wave or the displacement value to load into the modulo register of the corresponding sine wave
• Graphics showing two types of interpolation schemes
• Tables showing the phase differences between examples with interpolation and without interpolation
• The C2xx Assembly code that implements the application

TVP5158 Patch Code Download Guidelines

bq27%%% Verification and Accuracy Test Methods of Gas Gauges

USB Compliance Checklist Application Report

TIC Digital Interface AMC1204, MSP430G2553

Acoustic echo cancellation on the TMS320C8x multiprocessor digital signal processor (DSP) offers high performance and flexibility to meet varying user needs. This document describes the implementation of an integrated N-tap digital acoustic echo canceller on the TMS320C8x parallel processor (PP). A brief discussion of a generic echo cancellation algorithm is provided. A 512-tap (64-ms span) echo

This application report provides a complete working example of a C-language program to initialize the video decoder using the I2C bus interface. This Example Initialization Program executes on the TVP56000EVM evaluation module featuring the TVP5020 video decoder and the TVP6000EVM hardware platform microcontroller-specific aspects and a detailed description of the source-code modules.

This application note introduces the UC3861-8 family of ICs which are optimized for the control of zero-current-switched and zero-voltage-switched quasi-resonant converters. Differences among members of this device family result from the various combinations of UVLO thresholds and output options. The one-shot pulse steering logic is configured to program either on time for ZCS systems (UC1865-186

UCD3138 E-Metering Solution

While in the process of reviewing Texas Instruments applications notes, including those from Burr-Brown ? I uncovered a couple of treasures, this handbook on op amp applications and one on active RC n

The ADS1148 and ADS1248 family of devices are highly integrated delta-sigma (??) converters that are optimized for the measurement of temperature sensors, including resistance temperature detectors

Tolerances on VCCIO, resistor and capacitor values, and internal silicon variations make calculation of the analog watchdog (AWD) components and period complicated. A method for calculating the compon

A variety of low-cost supervisory ICs contain the required building blocks for the more demanding optocoupler feedback drive applications. Initially developed to address other specific power supply tasks several control ICs excel in the role as precision optocoupler control and drivers. This design note describes a basic optocoupler driver circuit and also a more advanced optocoupler drive circ

This document describes a procedure for computing an integrated circuit's junction-to-ambient thermal impedance using its thermal shutdown temperature.

TPS65142 Loop Compensation Design Consideration Written by Chinese engineer

The Texas Instruments (TI) ADS809 is a 12-bit, 80-MHz pipeline analog-to-digital converter (ADC). It has high speed, high resolution, high-input bandwidth, and a high signal dynamic range. Its many other good features include good signal-to-noise-ratio (SNR), good linearity, low jitter, flexible clocking, an over-range indicator (OVR), “data valid” output, three-state output, an internal or external reference, and a single-ended or differential input configuration. It can be used for broadband communications, test equipment, medical instrumentation, CCD imaging, and other fast-ADC applications.

In these applications the input analog signal applied to the ADS809 varies and may be a DC, AC, narrow band, wide band, or pulse signal with a large amplitude. The sampling clock used for these applications can be up to 80 MHz with a uniform or non-uniform clock phase. Different applications require different critical features of the ADS809. In some conventional sampling applications, the ADC input analog signal is smooth with a large amplitude, and the SNR and spurious-free dynamic range (SFDR) are critical; while in some small-signal sampling applications, the SFDR and full-scale (FS) step-acquisition time are not as critical. However, the FS step-acquisition time is critical in largesignal sampling applications, especially when the sampling clock has to be high-frequency with a non-uniform phase and the analog input pulse signal is large (for example, 2 V). In this case the input signal has a sharp edge with a large voltage amplitude, and the pulse edge could be very close to the sampling clock edge due to sampling clock phase variations. If the ADC does not have fast step response for the signal settling, the next ADC sample after the pulse edge will be unstable, which is undesirable. Therefore it is critical for the ADC to have a fast settling time when a large input pulse signal is sampled. Similarly, when the input pulse is over full-scale range (FSR), it is important for the ADC to have a fast over-range recovery time. This is tough for any ADC in applications where the input pulse signal is large and sampling speed is very high with a nonuniform clock phase. However, the ADS809 works well with this type of application. This article presents the results of recent lab tests that further prove the ADS809’s fast step response with a large, FS input pulse. The test data also covers the ADS809’s response to over-range conditions.

AN-1058 Using the COP820CJ/COP840CJ in Home Appliances