App note: Common audio inter-IC protocols

Here is a design article from EETimes about the common inter-IC audio protocols. The article covers the traditional audio signal chain, fully digital audio signal chains, I2S protocol, and PDM. As audio integrated-circuit (IC) designs move to finer geometries, it becomes more difficult to design, and less cost-effective to integrate, high-performance analog circuits on the […]

App note: Digital to analog interface fundamentals

Analog Devices describes the fundamentals of working with digital-to-analog converters: This tutorial outlines some important issues regarding DAC interface circuitry including the voltage reference, analog output, data input, and clock driver. Because ADCs require references and clocks also, most of the concepts presented in this tutorial regarding these subjects apply equally to ADCs.

App note: A reference design for high-performance, low-lost weigh scales

Bearmos tipped us about this reference design  from Analog Devices for high-performance, low cost weigh scales. The design uses load-cell, and a load-cell ADC AD7799. The trend in weigh scales towards higher accuracy and lower cost has produced an increased demand for high-performance analog signal processing at low cost. The scope of this requirement is […]

Analog Devices op amp selection guide

Ian Griffiths writes to inform us of this Op Amp Selection Guide available from Analog Devices. This 58-page PDF offers a complete overview of their product offerings. As Ian G. points out, “it has 3 pages devoted to different terms used for describing op-amp characteristics and different op-amp types to help those trying to select […]

App note: Noise sources in low dropout (LDO) regulators

Looking for a clean power supply for a sensitive analog circuit? Analog Devices describes the sources of noise in LDO voltage regulators, and provides some examples to limit and combat the noise. In general, LDO noise comprises two components: intrinsic, or internally generated noise, and extrinsic, or externally generated noise. Thermal and 1/f noise are […]

App note: Thermocouples, and design guidelines for AD59X TC amplifiers

Analog Devices has an app note on thermocouple basics, and some guidelines on how to design projects with their AD595 and AD594 thermocouple amplifiers. Temperature is the most frequently measured physical parameter. However, the techniques of temperature measurement are grossly misunderstood, often resulting in serious inaccuracies or meaningless data. Thermocouples are basically two wires made […]

ADUCRF101: precision analog microcontroller with ISM band transceiver

Analog Devices, Inc. announces the release of the ADuCRF101, a fully integrated System On Chip (SOC) solution designed for low power wireless applications. The ADuCRF101 integrates a low power Cortex-M3 core from ARM. It is a 32-bit RISC machine, offering up to 1.25 DMIPS peak performance. The Cortex-M3 MCU also has a flexible 14-channel DMA […]