TI Unveils Lowest Power Zero-Crossover Op Amp For Battery-Powered, Portable Applications

TI Unveils Lowest Power Zero-Crossover Op Amp For Battery-Powered, Portable Applications

August 30, 2007

Precision, 1uA Amplifier Simplifies High-Performance
Designs

	
    DALLAS, Aug. 30 /Xinhua-PRNewswire/ -- Texas
Instruments Incorporated (TI) (NYSE: TXN) today introduced
the industry's lowest power zero-crossover operational
amplifier (op amp).  Featuring a unique single-input-stage
architecture, the OPA369 achieves rail-to-rail performance
without input crossover to solve the common design problem
of input offset distortion due to the change in common mode
voltage that is very prominent in low-voltage, rail-to-rail
applications. Combined with 1uA quiescent current, SC70
package and operation down to 1.8V, the OPA369 simplifies
high-performance designs in battery-powered, portable
products. (See http://www.ti.com/opa369-pr )

    (Logo:
http://www.xprn.com.cn/xprn/sa/20061107170439-20.jpg )

    "The OPA369 utilizes TI's innovative
zero-crossover topology and next-generation CMOS process
technology to offer precision performance previously
unavailable in 1uA single-supply amplifiers," said Art
George, senior vice president of TI's high-performance
analog business. "Typically, designers are forced to
choose between power consumption and the AC or DC
performance of their signal conditioning amplifiers. The
OPA369 will enable customers to increase the precision in
their portable applications without complicating the design
or increasing their power budget."

    The single-input stage architecture delivers
outstanding offset voltage of 750uV over the entire
rail-to-rail input range and a common-mode rejection ratio
(CMRR) of 100dB minimum, thereby maximizing the useable
input dynamic range for low supply voltage applications.
Other features include low noise of 120nV/rtHz, gain
bandwidth of 12kHz on 1uA, low input bias current of 50pA
maximum, low voltage offset drift of 1.75uV/degrees
Celsius(max), PSRR of 94dB and low 1/f noise of 3.6uVp-p
(0.1 to 10Hz)

    The OPA369 offers the precision, low power and small
packaging required in a wide variety of applications such
as portable medical devices (glucose meters, oxygen
metering), portable instrumentation (gas
detection/monitoring, handheld test equipment), sensor
signal conditioning and portable consumer devices.

    TI provides customers with a state-of-the-art signal
chain solution for portable applications: analog-to-digital
converters such as the ADS1000; digital-to-analog converters
such as the DAC8811; and precision voltage references such
as the REF33xx. The OPA369 is also optimized to work with
TI's MSP430 ultra-low-power microcontroller family.

    Availability and Packaging

    The dual OPA2369 is available now from TI and its
authorized distributors in SOT23-8 and MSOP-8 packages.
Suggested resale pricing for the OPA2369 starts at $1.20 in
1,000-piece quantities.

    The single OPA369 is sampling now, with volume
production scheduled for 4Q 2007. The device is available
in an SC70-5 package and suggested resale pricing starts at
$0.80 in 1,000-piece quantities. In addition, TINA-TI
SPICE-based analog simulation software is available for
easy-to-use circuit simulation.

    TI offers analog engineers a wide-ranging support
infrastructure that includes training and seminars, design
tools and utilities, technical documentation, evaluation
modules, an online KnowledgeBase, a product information
hotline and a comprehensive offering of samples that ship
within 24 hours of request. For more information on TI's
complete analog design support, and to download the latest
Amplifier and Data Converter Selection Guide, visit
http://www.ti.com/analogelab . 
 
    Texas Instruments Incorporated provides innovative DSP
and analog technologies to meet our customers' real world
signal processing requirements.  In addition to
Semiconductor, the company includes the Educational &
Productivity Solutions business.  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 .

    Please refer all reader inquiries to: Texas Instruments
Incorporated
                                           Semiconductor
Group, SC-07140
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Response Center
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    For more information, please contact:

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     Jacqi Moore
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