Sensors
2
Freescale Semiconductor
MMA7260QT
Figure 2. Simplified Accelerometer Functional Block Diagram
ELECTRO STATIC DISCHARGE (ESD)
WARNING: This device is sensitive to electrostatic
discharge.
Although the Freescale accelerometer contains internal
2000 volts 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
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.
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)
g
max
±5000
g
Supply Voltage
V
DD
–0.3 to +3.6
V
Drop Test
(1)
1. Dropped onto concrete surface from any axis.
D
drop
1.8
m
Storage Temperature Range
T
stg
–40 to +125
°
C
V
SS
Z
OUT
Y
OUT
X
OUT
g-Select1
g-Select2
Sleep Mode
V
DD
G-Cell
Sensor
Oscillator
Clock
Generator
X-Temp
Comp
Y-Temp
Comp
Z-Temp
Comp
C to V
Converter
Gain
+
Filter
Control Logic
EEPROM Trim Circuits
