This demonstration board highlights the performance of a LM3444 based Flyback LED driver solution that can be used to power a single LED string consisting of 4 to 8 series connected LEDs from an 90 VR
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Many industrial current-loop applications call for conversion of a 0 to 20mA input current into 0 to 5V output. The RCV420 is intended primarily as a complete solution for precise 4 to 20mA to 0 to 5V conversion. But with the addition of one or two external 1% resistors the RCV420 can also accurately convert a 0 to 20mA input into a 0 to 5V output.
The Input/Output Buffer Information Specification (IBIS), also known as ANSI/EIA-656, has become widely accepted among electronic design automation (EDA) vendors, semiconductor vendors, and system des
This reference design demonstrates how the MSP430 ultra-low power, mixed signal processor can be used to perform the real-time signal processing necessary to implement a dual tone multi-frequency (DTM
Parasitic capacitors are formed during normal op amp circuit construction. Op amp design guidelines usually specify connecting a small 20-pF to 100-pF capacitor between the output and negative input and isolating capacitive loads with a small 20-ohm to 100-ohm resistor. This application report analyzes the effects of capacitance at the input and output pins of an op amp and suggests means for
High frequency current-feedback amplifiers (CFA) are finding a wide acceptance in more complicatedapplications from dc to high bandwidths. Often the applications involve amplifying signals in simpleresistive networks for which the device-specific data sheets provide adequate information to complete thetask. Too often the CFA application involves amplifying signals that have a complex load or
This report provides the description of local oscillator (LO) phase noise degradation due to supply noise. Brief theoretical information supported by experiments carried out to demonstrate this degradation is discussed. The importance of selecting appropriate low-noise LDO (low-dropout) linear regulators is discussed. The impact of improper LDO within in-band phase noise of a multi-GHz synthesizer
TI advanced battery-monitoring ICs such as the bq2018 bq2019 and bq2023 are designed to accurately measure the charge and discharge currents in rechargeable battery packs. Intended for pack integration these devices contain all the necessary functions to form the basis of a comprehensive battery capacity management system in applications such as cellular phones PDAs Internet appliances or
In 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
This 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.
Assembly 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.
Polystyrene 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
This 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
TI?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