Using the bq4845 for a Low-Cost RTC/NVSRAM Subsystem.The bq4845 combines on one IC a low-power real-time clock (RTC) a microcontroller supervisor and a nonvolatile control circuit for static RAM. The part is the basis of a low-cost reliable RTC plus nonvolatile SRAM subsystem for many embedded applications. This application note discusses the key aspects of bq4845 operation: component sele

This design note describes an evaluation board for the UC3584 Secondary Side Post Regulator. The board contains a fully functional auxiliary converter. This controller provides a semiconductor solution for regulating auxiliary outputs in transformer isolated power supplies where magnetic amplifiers (magamps) were previously used. A schematic and list of materials are provided.

Designing with the DRV421: Control Loop Stability DRV421

Because of the programmability of the digital signal processor the TMS32010 can also be programmed to handle Dual-Tone MultiFrequency (DTMF) encoding and decoding over telephone lines. For a system already performing digital signal processing functions using the TMS320 this DTMF capability may be obtained at no additional hardware cost. This report is a reprinted article from Electronic Design N

This application report presents a solution to interfacing the ADS8382 18-bit 600-KSPS serial interface converter to the TMS320C6713 DSP. The hardware solution is made up of existing hardware: the ADS8382EVM 'C6713 DSK and 5-6K Interface Board. The software demonstrates how to use an EDMA and Timer peripheral to collect data at 598 kHz. Discussed also are some of the key points to remember when

While in the process of reviewing Texas Instruments applications notes including those from the recently acquired Burr-Brown ? I uncovered a couple of treasures this handbook on active RC networks and one on op amp applications. These old publications from 1966 and 1963 respectively are some of the finest works on op amp theory that I have ever seen. Nevertheless they contain some material

The TMS320C5x and TMS320C54x contain a host port interface (HPI) functional block that interfaces to a microcontroller unit without external hardware. This document describes the hardware considerations for the interface design. The appendix provides the TMS320C5x assembler source code for the kernel software and software bootload sequence.

Configuring TPS65950/30/20 for Backup State Functionality

This document describes a new method of accessing IEEE 1149.1 based-boards in the backplane environment. The method can be used with a simple backplane to board connection or expanded to include the commandable features useful in the backplane environment. The document provides details on the addressable shadow port (ASP) and the shadow protocol that provide the means of connecting the backplane a

Inter-Operation of the DS14C335 with +5V UARTs

Initialization of the TMS570LS043x, TMS570LS033x and RM42L432 Hercules ARM Cortex-R4

This report describes interface circuits for the TMS32010 to asynchronous inputs and to external memory devices such as external ROM or RAM. A description of hardware peripheral interface device produced by Pacific Microcircuits is also included which eases the TMS32010 interface to both external memory and codec devices.

LB-22 Low Drift Amplifiers

Migrating From the MSP430F2xx and MSP430G2xx Families to the MSP430FR4xx/FR2xx Family

Application Note 216 Summary of Well Known Interface Standards

TPS51220 Independent Rail Dual Buck Converter using TPS51220

The PGA309 programmable gain amplifier generates three primary types of noise: broadband noise noise from the instrumentation amplifier auto-zero circuit and noise from the Coarse Offset auto-zero circuit. Noise at the PGA309 output can be reduced by limiting the bandwidth with a simple filter. This application note describes how to select the filter components in order to get the desired bandwi

Optimizing MOSFET Characteristics by Adjusting Gate Drive Amplitude

Analog designers are frequently required to develop circuits that convert high-voltage signals to levels acceptable for low-voltage data converters. This paper describes several solutions for this common task using modern amplifiers and typical power supplies. Five examples of conditioning ±10V bipolar signals for low-voltage single-rail analog-to-digital converters(ADCs) are presented: