This report describes a single-chip solution for concurrent DTMF and general-tone decoding or expanded general-tone decoding only. These facilities are provided on a special program on the TMS320C17 or TMS320E17. The term TMS320C17 applies to both throughout the report.The report covers the following topics:- Theory of Operation - Software - TMS320C17 Features - Hardware

The synchronous buck converter is a widely used topology in low-voltage, high-current applications. Low-power loss and highly efficient synchronous buck converters are in great demand for advanced mic

This application report discusses new phase-locked-loops that have advantages as frequency to voltage converters.

This application report describes the main features and configurations required to implement the LMX9838as a cable replacement into a system.

This application report explains how the EVM Application #9 creates a 2 channel sine wave generator using the 12 bit digital-to-analog converter (DAC) of the Texas Instruments (TI)(tm) TMS320F240 Evaluation Module (EVM). The document contains:- An overview that includes information on the commands that control the sine waves- Information on each of the three modules used- Details on how to

The C28xxx generation of microcontrollers can connect to external nonvolatile memory through a variety of interfaces including parallel serial peripheral interface (SPI) and inter-integrated circuit (I2C). This application report discusses how to write drivers for your external nonvolatile memory to allow for in-place programming using SDFlash an application provided by Spectrum Digital Inc. A

This application note provides information on the performance of the LM4962 and the LM4951 in a stereo application.

The TPS61150/1 is a high-frequency boost converter with two regulated current outputs for driving white light-emitting diodes (WLED). The reference design and applications examples in this document sh

TLV320AIC3100,AIC3110,AIC3111,AIC3120,DAC3100,DAC3120 AIC31xx/DAC31xx Devices and EMI Filtering on Speaker Outputs

This document helps the user understand the metastable performance of TLI clocked FIFOs in asynchronous-system applications. A basic discussion of metastable-operation theory the equations to calculate metastable failure rates for 1- and 2-stage synchronization and an approach used for synchronizing the state flags on a series of TI clocked FIFOs is provided. A test setup to measure the failure

The initialization of the DDR3 DRAM controller on KeyStone I DSPs is straightforward as long as the proper steps are followed. However, if some steps are omitted or if some sequence-sensitive steps ar

The 3650 is an optically coupled differential input isolation amplifier having programmable gain. Noise for the 3650 is specified to 4u Vrms (typ) on the input stage of the isolation barrier and 65u Vrms (typ) on the output stage. The gain of the 3650 is controlled using exernal resistors on the input stage. In low gains the noise performance of the 3650 is dominated by the output stage noise f

Designing with the DRV421: Closed Loop Current Sensor Specifications DRV421

The UCC39421 SEPIC demo board implements a complete 330-kHz, 3.3-V SEPIC converter. The user needs only to supply an input voltage and a load. A list of materials giving the component part numbers and

Analog Applications Journal July 2001 Issue Online

Current-feedback amplifiers have ideal closed-loop gain equations identical to voltage-feedback amplifiers but the similarity ends there. The detailed gain equations for the current feedback amplifer are developed here for the inverting and noninverting circuits. This paper goes beyond the gain analysis as it develops the stability criteria and discusses compensation.

The software demonstrates the MPEG-2 high-definition (HD) decoder running on the DM642 Evaluation Module (EVM). The demonstration uses the MPEG-2 HD decoder to decode the MPEG-2 HD bitstream and display the decoded frames on the HD output device.

The demonstration uses:

• MPEG-2 decoder library optimized for a DM642 EVM
• MPEG-2 decoder library implemented using XDAIS interfaces
• Samp

This reference design is presented to help application designers and others who are trying to use the MSP430 in a system with an input voltage in the range of 3.6 V to 5.5 V and who are also intereste

Two generations of powered device (PD) controllers are available from Texas Instruments for Power-over-Ethernet PD solutions. They are the TPS2370/TPS2371 and the TPS2375/TPS2377. While they are largely pin-compatible some differences between these two families of PD controllers make the TPS2375 and TPS2377 the preferred devices. This report explains the major differences between the two families