Burr-Brown Introduces 4-20mA Current-Loop Transmitters for Industrial Sensors and Signal Acquisition.Business Editors/High-Tech Writers TUCSON, Ariz.--(BUSINESS WIRE)--Feb. 8, 2000 Burr-Brown Corp. (NASDAQ NASDAQ in full National Association of Securities Dealers Automated Quotations U.S. market for over-the-counter securities. Established in 1971 by the National Association of Securities Dealers (NASD), NASDAQ is an automated quotation system that reports on :BBRC BBRC Biochemical and Biophysical Research Communications BBRC Bellevue Breakfast Rotary Club (Washington state) BBRC Ball Brothers Research Corporation ) today announced a pair of low-cost, precision 4-20mA current-loop transmitters, XTR XTR Xtra, Inc. XTR Extruded Polystyrene Foam XTR Extreme 115 and XTR116, designed for industrial sensor and signal acquisition systems. The XTR115 and XTR116 target basic 4-20mA current loop applications including smart transmitters where sensor signals are processed with microcontrollers when electrical power is not available at the sensor site. They are also well suited for a surprising variety of other high volume applications, such as remote signaling from a switch contact or simple variable resistor in, for example, an air duct or liquid level sensor The introduction to this article provides insufficient context for those unfamiliar with the subject matter. Please help [ improve the introduction] to meet Wikipedia's layout standards. You can discuss the issue on the talk page. . A 4-20mA current-loop transmitter provides accurate transmission of analog signals from sensors (used to monitor physical parameters in industrial processes such as temperature and pressure) to remotely located measurement equipment. The sensor signal is amplified, linearized, and transmitted in the form of current (no power supply required at the transmitter site). 4-20mA current loops are not affected by line resistance and are much more immune to electrical interference. &uot;The XTR115 and XTR116 offer an attractive combination of low price, low quiescent current, accuracy and versatility,&uot; said John Brown, strategic marketing engineer at Burr-Brown. &uot;A system designer will be challenged to achieve equivalent performance and functionality at such a low cost using discrete circuitry.&uot; Brown added: &uot;These integrated circuits Integrated circuits Miniature electronic circuits produced within and upon a single semiconductor crystal, usually silicon. Integrated circuits range in complexity from simple logic circuits and amplifiers, about 1/20 in. (1. solve the difficult design problem of interfacing high loop supply voltage (up to 36V) to low-level input circuitry (5V).&uot; Technical Detail The devices feature low quiescent current (200 micro-amps), wide loop supply range (7.5V to 36V), 5V regulator for powering external circuitry, precision voltage reference A voltage reference is an electronic device (circuit or component) that produces a fixed (constant) voltage irrespective of the loading on the device, power supply variation and temperature. for sensor excitation (XTR115 = 2.5V; XTR116 = 4.096V), and low span error (0.05%). A current return pin senses any current used in external circuitry to assure an accurate control of the output current. The XTR115 and XTR116 are priced from $0.95 in 1,000 piece quantities and packaged in an SO-8. Delivery is from stock. Both are specified for operation over the -40C to +85C industrial temperature range. About Burr-Brown Burr-Brown Corporation The Burr-Brown Corporation was a United States technology company which designed, manufactured, and marketed a broad line of proprietary, standard, high-performance, analog and mixed-signal integrated circuits (ICs) used in electronic signal processing. is a worldwide leader in the development, manufacturing and marketing of precision linear, data conversion and mixed signal integrated circuits. These products address applications for both analog and digital signal processing See DSP. Digital Signal Processing - (DSP) Computer manipulation of analog signals (commonly sound or image) which have been converted to digital form (sampled). relating to relating to relate prep → concernant relating to relate prep → bezüglich +gen, mit Bezug auf +acc communications, industrial and process control, test and measurement, medical instrumentation, digital audio, multimedia, and personal computer systems. For product information, visit http://www.burr-brown.com/. For additional information, call Brett Schroer at 800/548-6132 or e-mail schroer_brett@burr-brown.com. |
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