Selecting Transistors for Hot-swap Applications
Texas InstrumentsIn hot-swap circuits, series-limiting devices such as MOSFETs are used to control start-up inrush and fault currents. During these transient events, the MOSFET dissipates power greater than steady-sta
IEEE 1588 Precision Time Protocol Time Synchronization Performance (Rev. A)
Texas InstrumentsThis application report presents specific time synchronization results from the precision PHYTER.Histograms and oscilloscope plots of these synchronization results are provided showing the relationshipbetween the slave clock and the master clock.
Interfacing the ADS7870 and the MC68HC11E9 Analog to Microcomputer Made Easy
Texas InstrumentsAssembly of a data-acquisition system with its many parts (multiplexed amplifiers ADC voltage reference etc.) can be complex and expensive. The new Burr-Brown ADS7870 solves the problem with its 12-bit low-power CMOS data acquisition system containing all parts mentioned and extras. The space saving system is in a samll (SSOP-28 surface-mount) plastic package.
AN-1698 A Specification for EMI Hardened Operational Amplifiers (Rev. B)
Texas InstrumentsThis application report presents the background details and usage of the EMI Rejection Ratio (EMIRR)parameter.
Intrinsically Static-Dissipative Reel (Rev. A)
Texas InstrumentsPolystyrene black intrinisically static-dissipative (ISD) reels and polystyrene antistatic-coated reels used for shipping integrated circuits in tape-and-reel configuration were tested for surface-resistance performance at low (11.7%) and high (50.3%) relative humidity (RH) after 1 hour and 48 hours respectively. Static-charge decay also was measured under low-humidity conditions. The test resu
A TMS320C53-Based Enhanced Error-Correction Scheme for U.S. Digital Cellular
Texas InstrumentsThis document presents a forward error-correction scheme complying with the US Digital Cellular (USPC) standard. The scheme uses a generalized Viterbi algorithm to enhance performance of the USPC voice channel decoder. The application is implemented on a TMS320C53 fixed-point DSP. Using the algorithm on the TMS320C53 DSP does not increase the computational overhead when compared with a standard
Performing L Measurements from LDC DRDY Timing
Texas InstrumentsTI?s LDC1000 and LDC1101 devices measure the resonant frequency of an LC tank to determine the inductance of a sensor. Some applications require higher measurement resolution than the LDC100
AN-1538 Interfacing Nationals DS90CR218A and LM98714 (Rev. C)
Texas InstrumentsThis application report examines the issues that system designers may face when interfacing the Texas Instruments DS90CR218A and LM98714. It also offers guidance and solutions on solving these issues that will deliver for a reliable and cost effective LVDS data link.
Diagnosing Software Faults in Stellaris® Microcontrollers
Texas InstrumentsLM3S MCUs, LM4F MCUs Diagnosing Software Faults in Stellaris® Microcontrollers an01286
MSP Code Protection Features
Texas InstrumentsMSP microcontrollers (MCUs) offer a number of features to help control code accessibility in the device to add different layers of code access management and protection strategies. These include features that can lock or password protect the JTAG/SBW access IP Encapsulation (IPE) to isolate sensitive code with different permissions than the rest of the program and bootloader (BSL) access featur
AN-2116 SolarMagic ICs in Micro-inverter Applications (Rev. B)
Texas InstrumentsThis application report explores some of the prevalent topologies used in microinverters today and theuse of SolarMagic™ ICs in these demanding applications. In particular the use of the SM72295Photovoltaic Full-Bridge Driver is highlighted.
TRF3703xx Quadrature Modulators Improve Spurious Emission and Save Power in TDD
Texas InstrumentsTRF3703xx IN TDD Applications
bq27425-G1 to bq27425-Gx Change List
Texas Instrumentsbq27425-G1, bq27425-G2A bq27425-G1 to bq27425-Gx Change List
Headset Detection for TLV320AIC33 and TLV320AIC310x Family
Texas InstrumentsA common feature in most of today's electronic devices – including cell phone PDAs notebooks handheld media players game systems etc. – is the provision for connecting to external accessories. The devices therefore include dedicated logic circuitry that can detect not only the presence of an accessory but also its type.The TLV320AIC33 and TLV320AIC3101/4/5/6 family includes extensive ca
AN-2006 Synchronizing a DP83640 PTP Master to a GPS Receiver (Rev. A)
Texas InstrumentsThis application report discusses methods of synchronizing the precision time protocol (PTP) clock to aGPS receiver using the DP83640 precision PHYTER™.
VCC vs System Speed of MSP430F21x1
Texas InstrumentsThis document provides analysis details and specific results of the CPU45 errata affecting the following devices:
- MSP430F2131
- MSP430F2121
- MSP430F2111
- MSP430F2101
TLC770x Series of BiCMOS Supply Voltage Supervisors
Texas InstrumentsThis report describes the function and application of the supply voltage supervisor circuit TLC770X. Besides a detailed functional description the behavior of line and battery operated power supplies during power-up as well as the behavior of digital circuits is presented. Finally application-examples of supply voltage supervision in general and supply voltage supervision in systems are described
Multicell Li-Ion and Li-Pol Battery Gas-Gauge Application Using bq26500
Texas InstrumentsThe bq26500 is the first complete battery fuel gauge for handheld devices such as PDAs and cellular handsets. Many of these applications use only one Li-Ion or Li-Polymer cell in the battery, producin
