Essential information for charging! ADI's most popular technical articles in 2016

Top 10

Phase-locked loops for high-frequency receivers and transmitters

This three-part series aims to provide a comprehensive overview of phase-locked loop (PLL) applications in wired and wireless communication systems.

Part I Focuses on the basic concepts of PLLs, describing the basic PLL architecture and operating principle, and also gives examples of the use of PLLs in communication systems. Finally, a practical PLL circuit using the ADF4111 frequency synthesizer and the VCO190-902T voltage controlled oscillator will be demonstrated.

Part 2 A closer look at the key technical specifications associated with PLLs: phase noise, reference spurs, and output leakage current. What causes these factors and how can their effects be minimized? How do they affect system performance?

Part III The individual blocks that make up the PLL frequency synthesizer and the architecture of the ADI frequency synthesizer are described in detail. It will also briefly summarize the frequency synthesizers and VCOs currently available on the market and list ADI's current products.

Top 9

RTD temperature measurement system requirements for ADC

This article introduces commonly used 3-wire and 4-wire resistance temperature detectors (RTDs), the circuitry required to interface the sensor to an ADC, and explains the performance requirements placed on the ADC.

Top 8

Precision Photodiode Sensor Circuit Optimization Design

Photodiode amplifiers are important building blocks for most precision optical measurement systems. Selecting the correct operational amplifier is an important first step in achieving optimal system performance.

Top 7

Σ-Δ ADC Topology Basics

Σ-Δ ADCs are essential components in the toolbox of today’s signal acquisition and processing system designers. This series of articles is divided into two parts:

The purpose of Part I is to provide a basic understanding of the fundamentals behind Σ-Δ ADC topologies. Examples of trade-off analysis between noise, bandwidth, settling time, and all other key parameters associated with ADC subsystem design are explored to provide context for designers of precision data acquisition circuits.

Part II is a brief introduction to Σ-Δ ADCs - the principles surrounding the modulator, concepts and examples of digital filtering, and its impact on noise, settling time, and some knock-on effects within a measurement system.

Top 6

Gyroscope mechanical properties: the most important parameters

Real-world gyros have errors for a variety of reasons that prevent users from achieving the high bias stability claimed in the data sheet. The traditional approach has been to use compensation to minimize the effects of these error sources. This article will discuss several such techniques and their limitations. Finally, we will discuss an alternative paradigm - selecting a gyroscope based on its mechanical performance and, if necessary, how to improve its bias stability.

Top 5

Home is where the heart is

If we redefine "home health monitoring" as "personal health monitoring," the walls disappear, and there are no boundaries for where and how we measure vital signs. This article discusses the redefinition of "home health" monitoring, and where the heart is, there is "home."

Top 4

Nine Often Overlooked ADC Specifications

ADCs have many specifications, some of which are more important for a particular application than others. Understanding these specifications and controlling the external devices that affect the ADC will result in better performance.

Top 3

Digital Demand: Challenges and Solutions for High-Speed ​​ADCs and Radar Systems

The need for more digital signal processing is driving the radar signal chain to transition to digital earlier, moving the analog-to-digital converter (ADC) closer to the antenna, which in turn presents several challenging system-level issues.

Top 2

Seven Steps to Successful Ultra-Low Light Signal Conversion

The light energy transmitted to one of the sensors generates a current that is further processed by a high-precision preamplifier. Analog-to-digital conversion and digital signal processing form the rest of the signal chain. The process of selecting a sensor and designing an analog front end can be reduced to seven steps.

Top 1

Power Supply Design for High-Speed ​​ADC

This technical article will describe the techniques used to measure the rejection of a converter's AC power supply, thereby establishing a baseline for the converter's power supply noise sensitivity. A simple noise analysis of an actual power supply will be performed, showing how these values ​​can be applied to a design to verify that the power supply meets the requirements of the selected converter.

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