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參數(shù)資料
| 型號： | MXD7202HL |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Low Cost, Low Noise 【2 g Dual Axis Accelerometer with Digital Outputs |
| 中文描述： | 低成本，低噪聲【2克雙軸加速度計的數(shù)字輸出 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 326K |
| 代理商： | MXD7202HL |
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage (V
DD
)
Storage Temperature ……….…………-65
°
C to +150
°
C
Acceleration ……………………………………..50,000
g
*Stresses above those listed under Absolute Maximum Ratings may cause permanent
damage to the device. This is a stress rating only; the functional operation of the
device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
Pin Description: LCC-8 Package
Pin
Name
Description
1
NC
Do Not Connect
2
TP
Connected to ground
3
COM
Common
4
Yout
Y Channel Duty Cycle Output
5
Xout
X Channel Duty Cycle Output
6
NC
Do Not Connect
7
NC
Do Not Connect
8
V
DD
2.7V to 5.25V
MEMSIC MXD7202GL/HL/ML/NL
Page 3 of
10
2003.08.04
Model
PWM
Frequency
Temperature
Range
0 to 70
°
C
0 to 70
°
C
-40 to +85
°
C
-40 to +85
°
C
Device
Weight
<1.0 gram
MXD7202GL
100Hz
MXD7202HL
400Hz
<1.0 gram
MXD7202ML
100Hz
<1.0 gram
MXD7202NL
400Hz
<1.0 gram
………………...-0.5 to +7.0V
Ordering Guide
All parts are shipped in tape and reel packaging.
Caution:
ESD (electrostatic discharge) sensitive device.
Note:
The MEMSIC logo’s arrow indicates the -X sensing
direction of the device. The +Y sensing direction is rotated 90
°
away from the +X direction following the right-hand rule. Small
circle indicates pin one(1).
THEORY OF OPERATION
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
having a proof mass. The stationary element, or ‘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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MXD7202ML | Low Cost, Low Noise 【2 g Dual Axis Accelerometer with Digital Outputs |
| MXD7202NL | Low Cost, Low Noise 【2 g Dual Axis Accelerometer with Digital Outputs |
| MXD7210HL | Low Cost, Low Noise +-10 g Dual Axis Accelerometer with Digital Outputs |
| MXD7210GL | Low Cost, Low Noise +-10 g Dual Axis Accelerometer with Digital Outputs |
| MXD7210ML | Silver Mica Capacitor; Capacitance:5000pF; Capacitance Tolerance:+/- 5%; Series:CD30; Voltage Rating:500VDC; Capacitor Dielectric Material:Mica; Termination:Radial Leaded; Lead Pitch:11.1mm; Leaded Process Compatible:Yes RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MXD7202ML | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Cost, Low Noise 【2 g Dual Axis Accelerometer with Digital Outputs |
| MXD7202NL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Cost, Low Noise 【2 g Dual Axis Accelerometer with Digital Outputs |
| MXD7210GL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Cost, Low Noise +-10 g Dual Axis Accelerometer with Digital Outputs |
| MXD7210HL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Cost, Low Noise +-10 g Dual Axis Accelerometer with Digital Outputs |
| MXD7210ML | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Cost, Low Noise +-10 g Dual Axis Accelerometer with Digital Outputs |
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