Analog ICs Meet Industrial System Needs

Jeff Lead Image Analog Inustrial

Connectivity, Control and IIoT

Whether it’s connecting with analog sensors or driving actuators, analog ICs play many critical roles in industrial applications. Networked systems add new wrinkles to the industrial analog landscape.

By Jeff Child

While analog ICs are important in a variety of application areas, their place in the industrial market stands out. Industrial applications depend heavily on all kinds of interfacing between real-world analog signals and the digital realm of processing and control. Today’s factory environments are filled with motors to control, sensors to link with and measurements to automate. And as net-connected systems become the norm, analog chip vendors are making advances to serve the new requirements of the Industrial Internet-of-Things (IIoT) and Smart Factories.

It’s noteworthy, for example, that Analog Devices‘ third quarter fiscal year 2017 report this summer cited the “highly diverse and profitable industrial market” as the lead engine of its broad-based year-over-year growth. Taken together, these factors all make industrial applications a significant market for analog IC vendors, and those vendors are keeping pace by rolling out diverse solutions to meet those needs.

Figure 1

Figure 1 This diagram from Texas Instruments illustrates the diverse kinds of analog sub-systems that are common in industrial systems—an industrial drive/control system in this case.

While it’s impossible to generalize about industrial systems, Figure 1 illustrates the diverse kinds of analog sub-systems that are common in industrial systems—industrial drive/control in that case. All throughout 2017, manufacturers of analog ICs have released a rich variety of chips and development solutions to meet a wide range of industrial application needs.

SOLUTIONS FOR PLCs

Programmable Logic Controllers (PLCs) remain a staple in many industrial systems. As communications demands increase and power management gets more difficult, transceiver technologies have evolved to keep up. PLC and IO-Link gateway systems must dissipate large amounts of power depending. That amount of power is often tied to I/O configuration—IO-Link, digital I/O and/or analog I/O. As these PLCs evolve into new Industrial 4.0 smart factories, special attention must be considered to achieve smarter, faster, and lower power solutions. Exemplifying those trends, this summer Maxim Integrated announced the MAX14819, a dual-channel, IO-Link master transceiver.

The architecture of the MAX14819 dissipates 50% less heat compared to other IO-Link Master solutions and is fully compatible in all modes for IO-Link and SIO compliance. It provides robust L+ supply controllers with settable current limiting and reverse voltage/current protection to help ensure robust communications with the lowest power consumption. With just one microcontroller, the integrated framer/UART enables a scalable and cost-effective architecture while enabling very fast cycle times (up to
400 µs) and reducing latency. The MAX14819 is available in a 48-pin (7 mm x 7 mm) TQFN package and operates over a -40°C to +125°C temperature range.  …

Read the full article in the November 328 issue of Circuit Cellar

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Telit and Wind River Team up for IIoT Effort

Telit has announced it is collaborating with Wind River, an Intel company, to accelerate Industrial IoT (IIoT) adoption. Through this relationship, Telit and Wind River are reducing the complexities of IoT device management, helping companies quickly and securely realize the full solution benefits of IIoT.

Wind River is using Telit’s IoT platform technology for its device management platform. The latest release of Wind River Helix Device Cloud is making it easier for companies to Wind-River-Helix-Device-Cloud-Image-1_small1capture data on-premise or in the cloud, providing enhanced system analytics and remote device management. By allowing users to aggregate and perform computing tasks, Device Cloud helps perform informed business intelligence to protect investments, utilize infrastructure, improve processes and generate new revenue streams.

Telit’s deviceWISE platform offers a set of connectivity management, device management, data management, edge, cloud and enterprise ready-to-use connectors and services that reduce the risk and time-to-market of connecting ‘things to apps,’ by collecting, managing,and analyzing critical device data.

Telit | www.telit.com

November Circuit Cellar: A Sneak Preview

The November issue of Circuit Cellar magazine is coming soon. Want a sneak peak? We’ve got a great section of excellent embedded electronics articles for you.

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TECHNOLOGY IN A CONNECTED WORLD

IoT Gateway Advances Take Diverse Paths: Flexible Networked Solutions
The Internet-of-Things (IoT) phenomenon offers huge opportunities. Circuit Cellar Chief Editor Jeff Child explores how IoT gateways play a vital role in those systems by providing Nov 328 coverbidirectional communication between the devices in the field and the cloud.

Power Analysis Attack on RSA: Asymmetric Adventures
Colin O’Flynn has done a number of great columns about cryptography—in particular symmetric cryptography. This time he’s tackling an asymmetric algorithm: a RSA implementation. Colin describes what’s unique about an RSA cryptosystem and takes us through a power analysis attack.

FOCUS ON ANALOG

Analog Solutions Fuel Industrial System Needs: Connectivity, Control and IIoT
Whether it’s connecting with analog sensors or driving actuators, analog ICs play many critical roles in industrial applications. Here, Circuit Cellar Chief Editor Jeff Child examines the latest analog technologies and products serving the needs of today’s industrial systems.

Using Power Audio Amplifiers in Untypical Ways (Part 2): More Alternative Uses
In Part 1 Petre Petrov described many interesting ways to use power audio amplifiers (PAAs) as universal building blocks similar to the op amps and comparators. Here, he discusses several more things that can be built from PAAs including wave generators and transformer drivers.

SPOTLIGHT ON MONITORING AND TESTING

Gas Monitoring and Sensing (Part 2): Putting the Sensor to Work
Columnist Jeff Bachiochi continues his exploration of gas monitoring and sensing. This time he discusses some of the inexpensive sensors available that can be applied to this application. Jeff then tackles the factors to consider when calibrating these sensors and how to use them effectively.

Logger Device Tracks Amp Hours (Part 2): Alternative Energy Sources
n this follow on to Part 1 of his story, William Wachsmann describes putting to use the amp-hour logger he built using a microcontroller and a clamp-on ammeter. This time he discusses modifying the amp-hour software so it can be used as an analog input logger to measure solar and wind power.

Negative Feedback in Electronics: A Look at the Opposite Side
Complementing his discussion last month on positive feedback, columnist George Novacek now takes a look at negative feedback. Just like positive feedback, negative feedback can significantly change or modify a circuit’s performance.

LF Quartz Resonator Tester: A Stimulating Discussion
Ed Nisley returns to the rich topic of low-frequency quartz resonators. This time he describes a tester built with an ordinary Arduino Nano and an assortment of inexpensive RF modules.

INTERESTING EMBEDDED PROJECTS

Simulating a Hammond Tonewheel Organ (Part 1) Mimicking a Mechanical Marvel
Hammond tonewheel organs were based upon additive sine-wave synthesis. Because of that, it’s possible to simulate the organ using a microcontroller program that feeds its output waveform to a DAC. Brian Millier takes on this project, making use of an ARM-based Teensy module to do the heavy lifting.

Machine Auto-Sorts Resistors: MCUs, Measurement and Motor Control
Typical electronics lab benches become littered with resistors from past projects. These three Cornell University graduates tackled this problem by building a resistor sorting system. It enables users to input multiple resistors, measure their resistance and sort them. The project integrates motor controllers, resistance measurement and a graphical user interface.

High-Speed RS-485 Transceivers Target IIoT Networks

Intersil, a subsidiary of Renesas Electronics, has announced two new high-speed, isolated RS-485 differential bus transceivers that provide 40 Mbps bidirectional data communication for Industrial Internet of Things (IIoT) networks. The ISL32741E offers 1,000 VRMS working voltage and 6 kV of reinforced isolation, more than 2x higher than Intersil isl32740e-41e-transceiver-promocompetitive solutions. The higher working voltage and reinforced isolation is required for today’s most rigorous medical and high-speed motor control applications. The ISL32740E with 2.5kV of isolation and 600VRMS working voltage comes in a small package, enabling high channel density for programmable logic controllers (PLCs) in factory automation applications.

The ISL3274xE transceivers provide additional advantages over other isolation technologies, including ultra-low radiated emission and EMI susceptibility, support for up to 160 devices on the bus, and an extended 125°C temperature range. These devices leverage giant magneto-resistance (GMR) technology that provides galvanic isolation to keep the communication bus free from common-mode noise generated in electrically noisy factory and building automation environments. The ISL32740E and ISL32741E 40 Mbps RS-485 transceivers are available now with prices ranging from $3.79 to $4.79 depending on package type and temperature range. Evaluation boards are available for $99.

Intersil | www.intersil.com

Scalable Multi-Protocol Industrial Ethernet Platform

STMicroelectronics recently announced a collaboration with Hilscher that combines the STM32 ecosystem with the multi-protocol flexibility of Hilscher’s netX control ICs. As a result, you can use the I-NUCLEO-NETX expansion board with any STM32 Nucleo-64 or STM32 Nucleo-144 development board.

The I-NUCLEO-NETX contains a netX 52 network controller IC with integrated Real-Time Ethernet switch. Plus, it includes two RJ-45 ports for line and ring topologies. netX 52 supports all Real-Time Ethernet protocol specifications and evolutions, including EtherCAT, PROFINET, EtherNet, Ethernet/IP, POWERLINK, CC-Link IE, Modbus TCP, and SERCOS III. Well suited for the Industrial Internet of Things (IIoT). it also can support Fieldbus standards like CANopen, emerging standards such as Time-Sensitive Networking (TSN), and OPC-UA and MQTT for cloud data exchanges.

Combining the strengths of netX with the STM32 family creates a “flexible, stable, and scalable platform for building products from simple I/O systems to complex, high-end drives and controls.” The I-NUCLEO-NETX expansion board is available on Amazon for $49. The I-CUBE-NETX expansion software—including evaluation versions of the EtherCAT, PROFINET, and EtherNet/IP protocols—is available for free at www.st.com/i-cube-netx.

Source: STMicroelectronics