This document describes the change made from bq27505-J1 to bq27505-J2. The latest ordering information and data sheet are available on the TI Web site. Note that bq27505-J1 uses firmware version 2.07 and the bq27505-J2 uses firmware version 2.15.

This application report deals chiefly with the practical aspects of using the LM1894 but the informationgiven can also be applied to the LM832.

AB-004 Make a Precision -10 V Reference

Audio Amplifier Drives Thermoelectric Cooler For OC-48 Laser Module

JPEG an acronym for Joint Photographic Experts Group is an ISO/CCITT-backed international standards group that defined an image-compression specification (also referred to as JPEG) for still images. The following are mandatory in JPEG specification: algorithms must operate at or near the state of the art in image-compression rates; algorithms must allow for software only implementations on a wid

Motion detection using pyroelectric passive infrared (PIR) sensor elements is a common method used for such applications. An implementation of such a system using the 16-bit Sigma-Delta ADC integrated into the MSP430F2013 to detect motion is presented in this application report.

The formalization of the IEEE 1149.1 boundary-scan standard provides and infrastructure that aids test engineers and assists design engineers in the debug of hardware and software. This document provides and overview of the test standardization process and discusses a scan-based debug and integration compliant with IEEE 1149.1. The test its results and the limitations of the standard are discusse

DSP/BIOS Hardware and Software UART Device Drivers Application Report

TPS54120 Understanding Compensation Network for the TPS54120

The VCA8613 is an 8-channel variable gain amplifier ideally suited for portable and mid-range ultrasound applications. Each channel consists of a Low Noise Amplifier (LNA) and a Variable Gain Amplifier (VGA). The VGA contains two parts: a voltage-controlled attenuator (VCA) and a programmable gain amplifier (PGA). The PGA output feeds directly into an integrated 2-pole low-pass Butterworth filter.

AN030 -- CC1020/1021 Received Signal Strength Indicator

Many FIFOs being released today include programmable almost-empty and almost-full flags. TI?s newly released SN74V2x5 FIFOs are functionally equivalent to devices offered by IDT and are pin-for-pin compatible. The programmable flags can be used to provide interrupt signals when used in digital signal processor (DSP) and microprocessor applications. Additional configurations use the programmable fl

Realistic wireless channel models consider the impact of multipath propagation. Since a transmitted signal is subject to reflections and refraction on walls surfaces and so forth the receiving node will see signals differing in phase and amplitude. Using more than one antenna allows the evaluation of different multipath scenarios to avoid or reduce the effects of fading and interferences. Diver

This application report describes and shows how to implement a direct thermocouple interface, without using the signal conditioning circuitry normally required for thermocouples. The thermocouple inte

TVP5160 VBI Quick Start

This document discusses the power consumption of the Texas Instruments TMS320DM6441 digital media System-on-Chip (DMSoC). Power consumption on the DM6441 device is highly application-dependent so a spreadsheet is provided to model power consumption for a user’s application. To get good results from the spreadsheet realistic usage parameters must be entered. The low-core voltage and other power d

The TLC320AD57C (?AD57C) is a sigma-delta stereo A/D converter providing 18-bit resolution with a signal-to-noise ratio of 97dB and a dynamic range of 91 dB. The device consists of two synchronous conversion path with a decimal decimation filter following the 64X oversampling sigma-delta modulator. This document describes the ?AD57C functions provides circuit configuration schematics and characte

This document provides an overview of a PLL clock driver. The advantages and disadvantages of PLLs and the cost in designs are discussed. TI manufactures three low-voltage high-performance PLL clock drivers the CDC2582 CDC2586 and the CDC2586.

Phase Locked Loop (PLL) is a fundamental part of radio wireless and telecommunication technology. The goal of this document is to review the theory design and analysis of PLL circuits. PLL is a simple negative feedback architecture that allows economic multiplication of crystal frequencies by large variable numbers. By studying the loop components and their reaction to various noise sources we

Wireless phones continue to gain additional features making them more valuable to the end user. Many of these features involve increased audio functionality and hence some additional design effort on the audio portion of the phone. This paper gives an overview of audio amplifiers before describing different audio architectures that can be used to implement features like ear-bud speakers stereo