Freescale MMA6270Q, MMA6270QR2 Technical Data
Freescale Semiconductor
Technical Data
±1.5 g - 6 g Dual Axis Low-g
MMA6270Q
Rev 1.0 2/2006
Micromachined Accelerometer
The MMA6270Q low cost capacitive micromachined accelerometer features
signal conditioning, a 1-pole low pass filter, temperature compensation and gSelect which allows for the selection among four sensitivities. Zero-g offset full
scale span and filter cut-off are factory set and require no external devices.
Includes a Sleep Mode that makes it ideal for handheld battery powered
electronics.
Features
• Selectable Sensitivity (1.5 g / 2 g / 4 g / 6 g)
• Low Current Consumption: 500 µA
• Sleep Mode: 3 µA
• Low Voltage Operation: 2.2 V – 3.6 V
• 6 mm x 6 mm x 1.45 mm QFN
• High Sensitivity (800 mV/g @1.5 g)
• Fast Turn On Time
• Integral Signal Conditioning with Low Pass Filter
• Robust Design, High Shocks Survivability
• Pb-Free Terminations
• Environmentally Preferred Package
• Low Cost
Typical Applications
• Laptop PC: Freefall Detection, Anti-Theft
• Cell Phone: Image Stability, Text Scroll, Motion Dialing, E-Compass
• PDA: Text Scroll
• Navigation and Dead Reckoning: E-Compass Tilt Compensation
• Gaming: Tilt and Motion Sensing, Event Recorder
• Robotics: Motion Sensing
• Appliances: Vibration Sensing
ORDERING INFORMATION
Device Name
MMA6270Q
MMA6270QR2
Temperature
Range
– 20 to +85°C 98ASA10651D QFN-16, Tube
– 20 to +85°C 98ASA10651D QFN-16,Tape & Reel
Package
Drawing
Package
g-Select1
g-Select2
V
V
MMA6270Q
MMA6270Q: XY AXIS
ACCELEROMETER
±1.5 g / 2 g / 4 g / 6 g
Bottom View
16 LEAD
QFN
98ASA10651D
Top View
OUTYOUT
N/C
X
16 15
1
2
3
DD
4
SS
56
14 13
78
N/C
Sleep
12
Mode
11
N/C
10
N/C
9
N/C
© Freescale Semiconductor, Inc., 2006. All rights reserved.
N/C
N/C
N/C
N/C
Figure 1. Pin Connections
g-Select1
g-Select2
V
DD
Sleep Mode
G-Cell
Sensor
Oscillator
C to V
Converter
Control Logic
EEPROM Trim Circuits
Clock
Generator
Gain
+
Filter
V
SS
X-Temp
Comp
Y-Temp
Comp
Figure 2. Simplified Accelerometer Functional Block Diagram
Table 1. Maximum Ratings
(Maximum ratings are the limits to which the device can be exposed without causing permanent damage .)
Rating Symbol Value Unit
Maximum Acceleration (all axis)
Supply Voltage
Drop Test
Storage Temperature Range
1. Dropped onto concrete surface from any axis.
(1)
g
max
V
DD
D
drop
T
stg
±2000 g
–0.3 to +3.6 V
1.8 m
–40 to +125 °C
X
OUT
Y
OUT
ELECTRO STATIC DISCHARGE (ESD)
WARNING: This device is sensitive to electrostatic
discharge.
Although the Freescale accelerometer contains internal
2000 V ESD protection circuitry, extra precaution must be
taken by the user to protect the chip from ESD. A charge of
over 2000 volts can accumulate on the human body or
associated test equipment. A charge of this magnitude can
MMA6270Q
2 Freescale Semiconductor
alter the performance or cause failure of the chip. When
handling the accelerometer, proper ESD precautions should
be followed to avoid exposing the device to discharges which
may be detrimental to its performance.
Analog Integrated Circuit Device Data
Table 2. Operating Characteristics
Unless otherwise noted: –20°C <
Characteristic Symbol Min Typ Max Unit
Operating Range
Supply Voltage
Supply Current
Supply Current at Sleep Mode
Operating Temperature Range
Acceleration Range, X-Axis, Y-Axis,
g-Select1 & 2: 00
g-Select1 & 2: 10
g-Select1 & 2: 01
g-Select1 & 2: 11
Output Signal
Zero g (T
Zero g
Sensitivity (T
1.5 g
2 g
4 g
6 g
Sensitivity
Bandwidth Response
XY
Noise
RMS (0.1 Hz – 1 kHz)
Power Spectral Density RMS (0.1 Hz – 1 kHz)
Control Timing
Power-Up Response Time
Enable Response Time
Sensing Element Resonant Frequency
XY
Internal Sampling Frequency
Output Stage Performance
Full-Scale Output Range (I
Nonlinearity, X
Cross-Axis Sensitivity
(2)
(3)
= 25°C, VDD = 3.3 V)
A
= 25°C, VDD = 3.3 V)
A
(4)
(7)
, Y
OUT
OUT
(8)
TA < 85°C, 2.2 V < VDD < 3.6 V, Acceleration = 0 g, Loaded output
(4)
(5)
(6)
= 30 µA)
OUT
(1)
V
DD
I
DD
I
DD
T
A
g
FS
g
FS
g
FS
g
FS
V
OFF
V
, T
OFF
A
S
1.5g
S
2g
S
4g
S
6g
S, T
A
f
-3dB
n
(4)
RMS
n
PSD
t
RESPONSE
t
ENABLE
f
GCELL
f
CLK
V
FSO
NL
OUT
V
XY, XZ, YZ
2.2
—
—
–20
—
—
—
—
1.485
—
740
555
277.5
185
—
—
—
—
—
—
—
—
VSS+0.25 — VDD–0.25 V
–1.0 — +1.0 %FSO
——5.0 %
3.3
500
3
—
±1.5
±2.0
±4.0
±6.0
1.65
±2
800
600
300
200
±0.03
350
4.7
350
1.0
0.5
6.0
11
3.6
800
10
+85
—
—
—
—
1.815
—
860
645
322.5
215
—
—
—
—
2.0
2.0
—
—
V
µA
µA
°C
g
g
g
g
V
mg/°C
mV/g
mV/g
mV/g
mV/g
%/°C
Hz
mVrms
µg/
Hz
ms
ms
kHz
kHz
1. For a loaded output, the measurements are observed after an RC filter consisting of a 1.0 kΩ resistor and a 0.1 µF capacitor on V
DD
-GND.
2. These limits define the range of operation for which the part will meet specification.
3. Within the supply range of 2.2 and 3.6 V, the device operates as a fully calibrated linear accelerometer. Beyond these supply limits the device
may operate as a linear device but is not guaranteed to be in calibration.
4. This value is measured with g-Select in 1.5 g mode.
5. The device can measure both + and – acceleration. With no input acceleration the output is at midsupply. For positive acceleration the output
will increase above V
/2. For negative acceleration, the output will decrease below VDD/2.
DD
6. The response time between 10% of full scale Vdd input voltage and 90% of the final operating output voltage.
7. The response time between 10% of full scale Sleep Mode input voltage and 90% of the final operating output voltage.
8. A measure of the device’s ability to reject an acceleration applied 90° from the true axis of sensitivity.
MMA6270Q
Analog Integrated Circuit Device Data
Freescale Semiconductor 3
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