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Freescale Semiconductor Offers Dual-Axis
Sensors for Consumer
Applications
Single family of
low-g devices delivers five sensing
functions
DETROIT, SENSORS EXPO - June 7,
2004 - Freescale Semiconductor Inc., a wholly owned subsidiary of Motorola Inc.
(NYSE:MOT), has developed an acceleration sensor series specifically for the
consumer market.
Freescale's innovative
MMA62xxQ micro-electromechanical-systems (MEMS)-based sensors are designed for
end products or embedded systems that need to measure small forces resulting
from tilt, motion, positioning, shock or vibration. Designers can choose from a
single family of devices featuring these five sensing functions to meet the
needs of a variety of applications.
The
MMA62xxQ low-gravity (low-g) sensors range from 1.5 g to 10 g and detect
movement in two directions (X and Y axes). Size is increasingly important in
product design, for applications ranging from cell phones and anything handheld
to hard disk drives. By using a single sensor that integrates two axes,
designers can reduce component count - saving valuable space, increasing heat
dissipation and reducing cost. The MMA62xxQ sensors are housed in a 6x6x1.98mm,
Quad Flat No-Lead (QFN) package that is 73 percent smaller in footprint than the
SOIC-20 package.
The MMA62xxQ series of
dual-axis sensors ranges from 50 Hz to 900 Hz, allowing designers to select the
devices with the most appropriate bandwidth and frequency for their
applications. The sensors' low current supply and power consumption also help
extend battery life and enable quick
power-up.
Low-g dual-axis accelerometer
applications
Electronics are dramatically
impacting the consumer arena, whether changing the inner workings of small
portable devices or replacing mechanical controls with MEMS. Freescale's
advanced dual-axis sensors are helping drive this evolution by converting
physical movement into an electrical output at very low-g
levels.
- Portable electronics: Designers of
MP3 players, PDAs and other small portable electronics may want more natural
human movement, rather than buttons, to control device inputs and responses. By
reducing the number of buttons, designers can incorporate larger displays and
add new features without increasing overall device
size.
- Video game pads and virtual reality
input devices: Sensitivity to small changes in motion and tilt makes the
MMA62xxQ sensors well-suited for game pad applications. The heightened
multi-axis sensitivity and full range of motion allow game users to make very
small impressions on the game pad that are then reflected in accurate visuals on
the television/computer screen when flying, driving and executing other quick
responses during game play.
Other consumer,
medical instrumentation and industrial/ appliance-related applications can
benefit from the sensitivity offered by the latest MMA62xxQ dual-axis
accelerometers:
- Industrial and appliance:
security monitoring, appliance balance and monitoring, vibration measurement,
bearing wear monitoring, seismic detectors, smart motor maintenance,
inclinometers, robotics, motion control, security alarms and security
enhancement equipment.
- Healthcare-related
equipment: arm tilt/positioning for enhanced blood pressure monitoring, patient
monitoring, physical therapy/rehabilitation, ergonomics tools and
pedometers.
MMA62xxQ family features
Each of the low-g sensors includes:
- Low-dimension Quad Flat No-Lead (QFN) 6x6x1.98mm
package
- Dual measurement axes for sensing a full
range of directional movements
- High sensitivity
(very low 1.5g) with low noise
- Low current/power
for extended battery life
- Fast power-up
response-time
- High accuracy, frequency and
resolution for tilt, motion, positioning, shock and vibration
sensing
- Self-test for functional
verification
- Reduced component count due to
integrated XY-axes
- Signal conditioned with
internal filter
- Minimal necessary board
space
- Elimination of multiple, angled design
boards for 3-D sensing applications
-
Amplification
- Temperature
compensation
Evaluation board enables
multiple detection situations
To help
demonstrate the many applications possible with the innovative dual-axis
sensors, Freescale has developed the RD1986MMA6260Q TRIAX evaluation board. The
board includes two low-g accelerometers, the MC6908KX8 microcontroller (MCU),
serial communication circuitry, EEPROM and a piezohorn. The TRIAX board displays
a three-axis solution with two accelerometers in the QFN
package.
Pricing and
availability
The family of low-g dual axis
accelerometers includes:
MMA6260Q at 1.5g and
50Hz
MMA6261Q at 1.5g and
300Hz
MMA6262Q at 1.5g and
150Hz
MMA6263Q at 1.5g and
900Hz
MMA6231Q at 10g and
300Hz
MMA6233Q at 10g and
900Hz
The accelerometers are available now in
production quantities. Suggested list price per unit in 1,000-piece quantities
is $3.60 (USD) for all of the devices. The reference design (part number
RD1986MMA6260Q) is available now for $49 (USD, suggested list price). For larger
quantities and more information about these products, contact Freescale
Semiconductor.
A photo of the MMA62xxQ is
available at www.motorola.com/mediacenter/graphics/detail/0,,4022_4281-2,00.html.
For additional information about the MMA62xxQ and the RD1986MMA6260Q, including
product features, graphics, support and more, go to:
http://e-www.motorola.com/files/abstract/event/SENSORSPRESSROOM.html?tid=tspw
About
Freescale Semiconductor
Freescale
Semiconductor, Inc., (www.Freescale.com) a
subsidiary of Motorola, Inc., has a 50-year history in microelectronics.
Freescale Semiconductor produces semiconductors for the automotive, consumer,
industrial, networking and wireless markets worldwide. Based in Austin, Texas,
Freescale Semiconductor has design, manufacturing or sales operations in more
than 25 countries. Freescale Semiconductor's 2003 sales were $4.9 billion
(USD).
Media
Contacts:
North
America
Lisa
Bradley
Freescale
Semiconductor
+1 480-413-8819
lisa.bradley@freescale.com
Emilie
Harris
Freescale
Semiconductor
+1 (512) 638-5321
emilie_harris@lpp.com
Europe,
Middle East, Africa
Regina
Cirmonova
Freescale
Semiconductor
+41-22-799-1258
regina.cirmonova@freescale.com
Latin
America
Ruth
Ruiz
Freescale
Semiconductor
+1 (480) 814-4897
ruth.ruiz@freescale.com
Asia
Pacific
Gloria
Shiu
Freescale
Semiconductor
+852 2661 8237
gloria.shiu@freescale.com
Japan
Koichi
Yoshimura
Freescale
Semiconductor
+81-3-3280-8672
koichi.yoshimura@motorola.com
Reader
Inquiry Response:
Freescale
Semiconductor
P.O. Box
17927
Denver, CO 80217
USA
Freescale™ and the Freescale logo are
trademarks of Freescale Semiconductor Inc. All other product or service names
are the property of their respective owners. © Freescale Semiconductor Inc.
2004
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