Burr-Brown Introduces Single-Chip Data Acquisition System for Portable and Battery-Powered Applications.Business Editors/High-Tech Writers TUCSON, Ariz.--(BUSINESS WIRE)--Jan. 10, 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 the ADS7870, a low-power data acquisition system (DAS) on a single chip which offers complete signal conditioning and conversion for industrial process control, medical, scientific, and communications applications. Designed for low cost, it also meets the requirements of consumer markets such as multi-sensor monitoring in sports activities and virtual reality systems. The ADS7870 is targeted for portable and battery-powered systems, low power control systems, multi-channel sensor signal acquisition, smart sensor signal conditioning, and general purpose instrumentation where delta-sigma products are too slow. "The ADS7870 provides customers with the industry's most versatile single-chip data acquisition system at an unequaled price," said Bruce Trump, strategic marketing manager at Burr-Brown. The ADS7870's low power is well suited for portable and battery-powered systems which need to digitize a number of signals. Because this device handles a wide range of input voltages, it is also ideal for monitoring key voltages in control systems. In addition, its versatility allows for routine monitoring of important signals in multi-channel or multi-function systems. Technical Detail The ADS7870 consists of a 4-channel differential/8-channel single-ended multiplexer (MUX), precision programmable gain instrumentation amplifier (PGIA PGIA Programmable Gain Instrumentation Amplifier PGIA Printing and Graphics Industries Association of Alberta PGIA Prince George Interpreters Association ), 12-bit successive approximation analog-to-digital converter (ADC (1) See A/D converter. (2) (Apple Display Connector) A peripheral connector from Apple that combines digital video display, USB and power in one cable. ) and an accurate on-chip voltage reference. The programmable-gain amplifier provides high input impedance, excellent gain accuracy, good common-mode rejection, and low noise. For many low-level signals, no external amplification or impedance buffering is needed between the signal source and the A/D A/D See advance-decline line (A/D). input. The offset voltage of the PGA (1) (Professional Graphics Adapter) An early IBM PC display standard for 3D processing with 640x480x256 resolution. It was not widely used. (2) (Programmable Gate Array) See gate array and FPGA. is auto-zeroed, offering excellent long term dc stability. Gains of 1, 2, 4, 5, 8, 10, 16 and 20V/V v/v volume (of solute) per volume (of solvent). v/v volume (of solute) per volume (of solvent). provide 16-bit dynamic range and allow signals as low as 125mV to produce full scale digital outputs. The ADS7870 contains an internal reference, which is trimmed for high initial accuracy and stability vs temperature. Drift is typically 10ppm/degrees Celsius. An external reference can be used in situations where multiple ADS7870s share a common reference. The ADS7870 includes a 4-bit digital I/O addressed through the serial interface. This provides additional versatility for control of external multiplexers or other ancillary functions. The serial interface allows the use of SPI (1) (Stateful Packet Inspection) See stateful inspection. (2) (Service Provider Interface) The programming interface for developing Windows drivers under WOSA. (TM), QSPI QSPI Queued Serial Peripheral Interface (TM), Microwire(TM), and 8051-family protocols, without glue logic, and can easily be electrically isolated with inexpensive opto-couplers. The ADS7870 is priced from $3.90 in 1,000 piece quantities and packaged in an SSOP-28. Delivery is from stock. About Burr-Brown Burr-Brown Corporation 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 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 Joe Engle at 800/548-6132 or e-mail engle_joe@burr-brown.com. |
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