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TI Introduces Digitally Programmable Analog Signal Conditioner for Pressure Bridge Sensors

Posted on: Friday, 23 January 2004, 06:00 CST

TUCSON, Ariz., Jan. 23 /PRNewswire/ -- Texas Instruments Incorporated (TI) today introduced a digitally programmable analog signal conditioner from the company's Burr-Brown product line, designed for pressure bridge sensors. This highly integrated, voltage-output integrated circuit (IC) provides amplification, digital calibration and error compensation that enables system performance approaching the inherent sensor repeatability. (See http://www.ti.com/sc04024 .)

"The PGA309 offers bridge sensor customers an off-the-shelf signal conditioner, with digital calibration, that will solve the problem of conditioning non-linear sensors over a wide temperature range," said Tim Green, strategic marketing engineer for TI's high-performance linear products. "An integral part of the PGA309 solution is an easy-to-use Designer's Kit (PGA309DK) which gives the customer a quick start. With this tool, a designer can evaluate and calibrate their sensor over temperature."

The PGA309 amplifies a low level bridge sensor signal and provides digital calibration for sensor zero, zero drift, span, span drift and linearity errors with applied pressure. The calibration is performed via a One-Wire or Two- Wire serial interface. Calibration parameters -- up to 17 different temperature calibration points with linear interpolation -- are stored in an external non-volatile memory (typically a low-cost, SOT23-5 EEPROM). This eliminates manual trimming and assures long-term stability.

The PGA309 consists of amplification signal path (low-noise, low-drift, auto-zero programmable gain instrumentation amplifier), offset and offset drift adjustment, span and span drift adjustment, integrated temperature sensor, voltage reference, bridge excitation and linearization, sensor fault detection, power-on reset and digital interface. The PGA309 features a wide operating temperature range (-40C to +125C), internal/external temperature sense select, over/under limit scaling, internal/external reference selection and +2.7V to +5.5V supply operation.

Availability, Packaging and Pricing

The PGA309 is available now from TI and its authorized distributors. The device is packaged in a TSSOP-16 and is priced from $2.95 in 1,000 piece quantities (suggested resale price). The easy-to-use evaluation module is also available (visit http://www.ti.com/sc04024 for more information).

Texas Instruments Incorporated provides innovative DSP and analog technologies to meet our customers' real world signal processing requirements. In addition to Semiconductor, the company's businesses include Sensors & Controls, and Educational & Productivity Solutions. TI is headquartered in Dallas, Texas, and has manufacturing, design or sales operations in more than 25 countries.

Texas Instruments is traded on the New York Stock Exchange under the symbol TXN. More information is located on the World Wide Web at http://www.ti.com/ .

About the TI Developer Conference

The TI Developer Conference (TIDC), scheduled for February 18-20, 2004, will focus on learning through peer-to-peer, hands-on interaction with the latest technological advances in the high-performance analog and digital signal processing areas of video, imaging, control, telecom, audio and security. It will also contain partner-specific sessions for university and third party attendees. Online registration for the TI Developer Conference is now available. For more information on the conference, specific sessions or to register, please visit http://www.ti.com/tidc04mr .

Please refer all reader inquiries to: Texas Instruments Incorporated

Semiconductor Group, SC-04024

Literature Response Center

P.O. Box 954

Santa Clara, CA 91380

1-800-477-8924

Photo: NewsCom: http://www.newscom.com/cgi-bin/prnh/20010105/NEF016LOGOAP Archive: http://photoarchive.ap.org/PRN Photo Desk, photodesk@prnewswire.com

Texas Instruments Incorporated

CONTACT: Brett Schroer of Texas Instruments Incorporated,+1-520-746-7984, or schroer_brett@ti.com ; or Heather Mills, +1-972-308-9131,or hmills@golinharris.com , for Texas Instruments Incorporated. Please do notpublish these numbers or e-mail addresses.

Web site: http://www.ti.com/http://www.ti.com/sc04024http://www.ti.com/tidc04mr

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