Application notes from Texas Instruments

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Application Notes from Texas Instruments

Analog Applications Journal, Q3, 1999

Analog Applications is a collection of analog application notes designed to give readers a basic understanding of TI products and to provide simple but practical examples for typical applications. Wri

Safety Manual for TPS65381-Q1 Multi-Rail Power Supply (Rev. A)

Texas Instruments

TPS65381 Safety Manual for TPS6538x Multi-Rail Power Supply Family

AN-447 Protection Schemes for BI-FET Amplifiers and Switches

Texas Instruments

Application Note 447 Protection Schemes for BI-FET Amplifiers and Switches

AN-521 Dual Tone Multiple Frequency (DTMF)

Texas Instruments

The DTMF (Dual Tone Multiple Frequency) application is associated with digital telephony, and provides two selected output frequencies (one high band, one low band) for a duration of 100 ms. A benchmark subroutine has been written for the COP820C/840C microcontrollers, and is outlined in detail in this application note. This DTMF subroutine takes 110 bytes of COP820C/840C code, consisting of 78 bytes of program code and 32 bytes of ROM table. The timings in this DTMF subroutine are based on a 20 MHz COP820C/840C clock, giving an instruction cycle time of 1 ms.

Upgrading to DSP/BIOS II

Texas Instruments

DSP/BIOS II adds numerous functions to the DSP/BIOS kernel while maintaining 100% Application Programming Interface (API) compatibility with DSP/BIOS I. In addition new functionality has been added to Code Composer Studio?. This application note describes the transition from DSP/BIOS I to DSP/BIOS II and focuses on the enhancements and changes to existing DSP/BIOS I functions.

How to Design an LED Driver Using the TPS92510 (Rev. A)

Texas Instruments

This design example consists of a single string of ten LEDs driven with 1-A forward current. This design example is a supplement to the TPS92510 data sheet and provides step-by-step instructions for optimizing an LED driver design. In particular, detailed attention is given to compensating and measuring the feedback loop, implementing the thermal foldback protection, and designing the printed-circuit board layout. Graphs are provided showing the design example test data.

TLV2262, TLV2264 EMI Immunity Performance

Texas Instruments

Softstart Using Constant Current Constant Voltage Approach

Texas Instruments

In many systems backup power is provided either by batteries or simply by a large value capacitor. Inthese applications the capacitor would only provide the current when the primary power source fails.Further these applications are usually for light load currents. During normal operation the backupcapacitors are kept charged up by a DC/DC converter. The challenge involved in an application

Low-Power Signal Conditioning For A Pressure Sensor (Rev. A)

Texas Instruments

Low-Power Signal Conditioning for a Pressure Sensor

PLC Schematics

Texas Instruments

PLC Schematics

SM74611 (Smart Bypass Diode) as an OR-ing Device

Texas Instruments

This application report demonstrates the use of TI's Smart Bypass Diode- SM74611 as a high efficiency solution for use in N+1 redundant power supply arrangements. It highlights the ease of use, high

Synchronizing non-FIFO variations of the THS1206

Texas Instruments

HDC1000 Texas Instruments Humidity Sensors

Texas Instruments

This application note will explain the basics of humidity sensing and some important design considerations. The application note begins with a brief description of humidity and how it is quantified. Next some design guides to implement good system measurement are presented. Finally different designs with HDC1000 are reviewed.

Supply Voltage Drop On Fast Current Demand

Texas Instruments

The simplest way to supply an electronic system with a continuous and stable voltage is to use a linear voltage regulator. This application brief provides recommendations to prevent additional voltage

Capacitive Proximity Sensing Using the FDC1004 (Rev. A)

Texas Instruments

Capacitive proximity sensing can be implemented in a wide variety of applications with the use of TI's FDC1004 and with the flexibility of the sensor design in many system environments. Not only are there advantages of using capacitive proximity sensing compared to alternative detection methods there are also guidelines to follow to ensure maximum performance and stability with the sensing system

The Offset DAC (Rev. A)

Texas Instruments

The Offset DAC

AN115 -- CC112x/CC1175/CC120x Operation in 274-320 MHz Frequency Band (Rev. A)

Texas Instruments

AN115 -- CC112x/CC1175/CC120x Operation in 274-320 MHz Frequency Band

Sensorless Field Oriented Control:3-Phase Perm.Magnet Synch. Motors Using 2833x

Texas Instruments

This application report presents a solution to control a permanent magnet synchronous motor (PMSM)using the TMS320F2833x floating-point microcontrollers. TMS320F2833x devices are part of the family ofC2000 microcontrollers which enables the cost-effective design of intelligent controllers for three phasemotors by reducing system components and increasing efficiency. With these devices it i

AN-146 FM Remote Speaker System

Texas Instruments

AN-146 FM Remote Speaker System

Reduction of Power Consumption for TMS570LS3137

Texas Instruments

This application report describes methods to reduce the power consumption of the Hercules™-based microcontrollers and gives indications for the reduction that can be achieved.

All examples and values are based on the TMX570LS3137BZWT microcontroller and are measured on the TI internal silicon checkout board.

Measurement Notes

The measurements were done on non-production sil