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參數(shù)資料
| 型號： | MXC6202XK |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Ultra Low Cost, 【2.0 g Dual Axis Accelerometer With I2C Interface |
| 中文描述： | 超低成本，【二點(diǎn)零克雙軸加速度計，帶有I2C接口 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大小： | 289K |
| 代理商： | MXC6202XK |
The MEMSIC device is a complete dual-axis
acceleration measurement system fabricated on a
monolithic CMOS IC process. The device operation is
based on heat transfer by natural convection and
operates like other accelerometers except that the
proof mass in the MEMSIC sensor is a gas.
A single heat source, centered in the silicon chip is
suspended across a cavity. Equally spaced
aluminum/polysilicon thermopiles (groups of
thermocouples) are located equidistantly on all four
sides of the heat source (dual axis). Under zero
acceleration, a temperature gradient is symmetrical
about the heat source, so that the temperature is the
same at all four thermopiles, causing them to output
the same voltage.
Acceleration in any direction will disturb the
temperature profile, due to free convection heat
transfer, causing it to be asymmetrical. The
temperature, and hence voltage output of the four
thermopiles will then be different. The differential
voltage at the thermopile outputs is directly
proportional to the acceleration. There are two
identical acceleration signal paths on the
accelerometer, one to measure acceleration in the x-
axis and one to measure acceleration in the y-axis.
Please visit the MEMSIC website at
www.memsic.com for a picture/graphic description of
the free convection heat transfer principle.
MXC6202xJ/K PIN DESCRIPTIONS
V
DD
– This is the supply input for the circuits and the
sensor heater in the accelerometer. The DC voltage
should be between 2.7 and 3.6 volts. Refer to the
section on PCB layout and fabrication suggestions for
guidance on external parts and connections
recommended.
GND
– This is the ground pin for the accelerometer.
COM
– This pin should be connected to ground.
TEST
– Do Not Connect, factory use only.
V
DD2
– This pin is the I
2
C input digital power supply, the
voltage on this pin determines the I
2
C bus logic
voltage, and is 1.8V compatible. Note: The voltage on
this pin should be equal to or less than the voltage on
V
DD.
Power should be applied to V
DD
first unless V
DD2
power supply voltage equals V
DD
, in which case power
may be applied to V
DD
and V
DD2
simultaneously.
SDA
– This pin is the I
2
C serial data line, and operates
in FAST (400 KHz.) mode.
SCL
– This pin is the I
2
C serial clock line, and
operates in FAST (400 KHz.) mode.
MEMSIC MXC6202xJ/K Rev.A
Page 7 of 11
3/20/2006
DISCUSSION OF TILT APPLICATIONS AND
RESOLUTION
Tilt Applications:
One of the most popular
applications for the MEMSIC accelerometer product
line is in tilt/inclination measurement. An
accelerometer uses the force of gravity as an input to
determine the inclination angle of an object.
A MEMSIC accelerometer is most sensitive to
changes in position, or tilt, when the accelerometer’s
sensitive axis is perpendicular to the force of gravity,
or parallel to the Earth’s surface. Similarly, when the
accelerometer’s axis is parallel to the force of gravity
(perpendicular to the Earth’s surface), it is least
sensitive to changes in tilt.
The following table and figure help to illustrate the
output changes in the X- and Y-axes as the unit is
tilted from +90
°
to 0
°
. Notice that when one axis has
a small change in output per degree of tilt (in m
g
), the
second axis has a large change in output per degree
of tilt. The complementary nature of these two signals
permits low cost accurate tilt sensing to be achieved
with the MEMSIC device (reference application note
AN-00MX-007).
M
Accelerometer Position Relative to Gravity
X-Axis
X-Axis
Orientation
To Earth’s
Surface
(deg.)
(
g
)
90
1.000
85
0.996
80
0.985
70
0.940
60
0.866
45
0.707
12.23
30
0.500
15.04
20
0.342
16.35
10
0.174
17.16
5
0.087
17.37
0
0.000
17.45
Changes in Tilt for X- and Y-Axes
Y-Axis
X
Output
Change
per deg.
of tilt
(m
g
)
0.15
1.37
2.88
5.86
8.59
Y
Output
(
g
)
0.000
0.087
0.174
0.342
0.500
0.707
0.866
0.940
0.985
0.996
1.000
Change
per deg.
of tilt
(m
g
)
17.45
17.37
17.16
16.35
15.04
12.23
8.59
5.86
2.88
1.37
0.15
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MXC6225XC (DTOS WLP) | 制造商:MEMSIC INC 功能描述:IC ACCELEROMETER XY AXIS 6CSP |
| MXC6225XU DTOS | 制造商:MEMSIC INC 功能描述:IC ACCELEROMETER XY AXIS LCC6 |
| MXC6226XC (DTOS WLP) | 功能描述:Accelerometer X, Y Axis ±2g 10Hz 6-CSP 制造商:memsic inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 類型:數(shù)字 軸:X，Y 加速度范圍:±2g 靈敏度（LSB/g）:64 靈敏度（mV/g）:- 帶寬:10Hz 輸出類型:I2C 電壓 - 電源:2.5 V ~ 5.5 V 特性:- 工作溫度:-20°C ~ 70°C（TA） 安裝類型:表面貼裝 封裝/外殼:6-CSP 供應(yīng)商器件封裝:6-CSP 標(biāo)準(zhǔn)包裝:1 |
| MXC6226XC-B | 制造商:Memsic Inc 功能描述:BOARD EVAL FOR MXC6226XC |
| MXC6226XU DTOS | 功能描述:Accelerometer X, Y Axis ±2g 10Hz 6-SMD 制造商:memsic inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 類型:數(shù)字 軸:X，Y 加速度范圍:±2g 靈敏度（LSB/g）:64 靈敏度（mV/g）:- 帶寬:10Hz 輸出類型:I2C 電壓 - 電源:2.5 V ~ 5.5 V 特性:- 工作溫度:-20°C ~ 70°C（TA） 安裝類型:表面貼裝 封裝/外殼:6-SMD，無引線（DFN，LCC） 供應(yīng)商器件封裝:6-SMD 標(biāo)準(zhǔn)包裝:1 |
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