Our partnership with Analog Devices creates more choice from an expanding product range
Analog Devices, Inc. (ADI) drives excellence and innovation in a number of device channels, from analogue and digital to mixed-signal processing using integrated circuits.
This allows non-digital inputs such as heat, light, motion, pressure and sound to be transformed into an electrical signal, allowing them to be manipulated and used in an electronic circuit. In turn, this enables the creation of electronic equipment that not only makes use of such inputs, but does so with a high level of clarity and optimised user interface.
ADI's strong financial performance over its 40-year history allows consistent and continued investment during slower market cycles, enabling product innovation that helps to deliver new components for specialist customer applications.
As an authorised distributor and proven partner of Analog Devices, you can count on element14 to provide you with extensive range of products from drivers to amplifiers to interfaces and convertors. With many of these available either on next-day delivery terms or with a five-day lead time for items listed in our extended catalogue.
HART® Field Instrument
Demonstration Board HK$379.80 Limited Time Offer
Designing loop powered field instruments with a 4 mA to 20 mA analog output and a HART® (highway addressable remote transducer) interface within the required power budget and space constraints can be challenging.
Save time with Analog Devices' new field instrument circuit, approved and registered by the HART Communication Foundation (HCF).
HART Modem for enhanced system diagnostic capability
Loop-powered DAC with intelligent power management
High resolution, low power, Analog Front-End for direct sensor interface with embedded ARM Cortex™ M3 microcontroller
Find out how you can design with a high level of confidence using one or more of the hardware components from this circuit.
Modern field instruments, otherwise known as smart transmitters, are intelligent microprocessor-based field instruments that monitor process control variables (e.g., temperature, mass flow rate, and pressure). The incorporation of extra intelligence, functionality, and diagnostic capabilities, while developing a system which can operate effectively within the limited power available from 4 mA to 20 mA loop, is the immediate challenge facing system designers. Strict safety standards, space constraints, HART® communication, diagnostics, and predictive maintenance will be key trends in the future.
CN0267: Complete 4 mA to 20 mA Loop Powered Field Instrument with HART Interface
The circuit shown in Figure 1 is a complete smart industrial, loop powered field instrument with 4 mA to 20 mA analog output and a highway addressable remote transducer (HART®) interface. HART is a digital 2-way communication in which a 1 mA peakto- peak frequency-shift-keyed (FSK) signal is modulated on top of the standard 4 mA to 20 mA analog current signal. This allows features such as remote calibration, fault interrogation, and transmission of process variables, which are necessary in applications such as temperature and pressure control.
Safeguard Your RS-485 Communication Networks from Harmful EMC Events
Analog Devices, Inc., and Bourns, Inc., have partnered to extend their offering of system oriented solutions by co-developing the industry's first EMC compliant RS-485 interface design tool that provides up to Level 4 protection levels for IEC61000-4-2 ESD, IEC61000-4-4 EFT, and IEC61000-4-5 surge. It gives designers the design options depending on the level of protection required and available budgets. These design tools allow designers to reduce risk of project slippage due to EMC problems by considering them at the start of the design cycle.
Testing of the circuits at the beginning of the design cycle.
Use of schematics and layout as a starting point in your design.
Certified to protect ADI's ADM3485E, 3.3-V RS-485 transceiver for:
6-kV, 4-kV and 1-kV surge (IEC61000-4-5)
2-kV EFT (IEC61000-4-4)
15-kV air-discharge and 8-kV contact ESD (IEC61000-4-2)
The circuits shown below demonstrate proven and tested electromagnetic compatibility (EMC) compliant solutions for three protection levels for popular RS-485 communication ports using the ADM3485E transceiver.
Three EMC Compliant ADM3485E Protection Circuits (Simplified Schematic, All Connections Not Shown)