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PDF MMA2260 Data sheet ( Hoja de datos )
| Número de pieza | MMA2260 | |
| Descripción | Axis Micromachined Accelerometer | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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www.DFaretaeSshceeatl4eUS.ceommiconductor
Technical Data
±1.5g X-Axis Micromachined
Accelerometer
The MMA series of silicon capacitive, micromachined accelerometers feature
signal conditioning, a 2-pole low pass filter and temperature compensation. Zero-
g offset full scale span and filter cut-off are factory set and require no external
devices. A full system self-test capability verifies system functionality.
Features
• Integral Signal Conditioning
• High Sensitivity
• Linear Output
• 2nd Order Bessel Filter
• Calibrated Self-test
• EPROM Parity Check Status
• Transducer Hermetically Sealed at Wafer Level for Superior Reliability
• Robust Design, High Shock Survivability
Typical Applications
• Tilt Monitoring
• Inclinometers
• Appliance Control
• Mechanical Bearing Monitoring
• Vibration Monitoring and Recording
• Sports Diagnostic Devices and Systems
• Trailer Brake Controls
• Automotive Aftermarket
Device
MMA2260D
MMA2260DR2
MMA2260EG
MMA2260EGR2
ORDERING INFORMATION
Temperature Range Case No.
Package
–40 to +105°C
475-01
SOIC-16
–40 to +105°C
475-01 SOIC-16, Tape & Reel
–40 to +105°C
475-01
SOIC-16
–40 to +105°C
475-01 SOIC-16, Tape & Reel
G-Cell
Sensor
Integrator
Temp Comp
Gain Filter
and Gain
VDD
VOUT
ST
Self-test
Control Logic &
EPROM Trim Circuits
Oscillator
Clock
Generator
VSS
STATUS
Figure 1. Simplified Accelerometer Functional Block Diagram
Document Number: MMA2260D
Rev 3, 03/2006
MMA2260
MMA2260D: X AXIS SENSITIVITY
MICROMACHINED
ACCELEROMETER
±1.5g
D SUFFIX
EG SUFFIX (Pb-FREE)
16-LEAD SOIC
CASE 475-01
VSS
VSS
VSS
VOUT
STATUS
VDD
ST
1
2
3
4
5
6
7
8
16 N/C
15 N/C
14 N/C
13 N/C
12 N/C
11 N/C
10 N/C
9 N/C
Figure 2. Pin Connections
© Freescale Semiconductor, Inc., 2006. All rights reserved.
1 page  
Pinout Description
BASIC CONNECTIONS
PCB Layout
VSS
VSS
VSS
VOUT
STATUS
VDD
ST
1
2
3
4
5
6
7
8
16 N/C
15 N/C
14 N/C
13 N/C
12 N/C
11 N/C
10 N/C
9 N/C
.
Table 3. Pin Description
Pin No.
Pin Name
1 thru 3
VSS
4
5
6
7
8
9 thru 13
14 thru 16
VOUT
STATUS
VDD
VSS
ST
Trim pins
—
Description
Redundant connections to the
internal VSS and may be left
unconnected.
Output voltage of the
accelerometer.
Logic output pin to indicate fault.
The power supply ground.
The power supply input.
Logic input pin used to initiate
self-test.
Used for factory trim. Leave
unconnected.
No internal connection. Leave
unconnected.
VDD
Logic
Input
C1
0.1 µF
MMA2260D
8 ST
6 VDD
VOUT
5
R1
1 kΩ
4
7 VSS
C2
0.01 µF
STATUS
Output
Signal
Figure 5. SOIC Accelerometer with Recommended
Connection Diagram
STATUS
P1
ST P0
VOUT
R
A/D In
VSS 1 kΩ C 0.01 µF
VDD C 0.1 µF
VRH
C 0.1 µF
VSS
C 0.1 µF
VDD
Power Supply
Figure 6. Recommended PCB Layout for Interfacing
Accelerometer to Microcontroller
NOTES:
1. Use a 0.1 µF capacitor on VDD to decouple the power
source.
2. Physical coupling distance of the accelerometer to the
microcontroller should be minimal.
3. Place a ground plane beneath the accelerometer to
reduce noise, the ground plane should be attached to
all of the open ended terminals shown in Figure 6.
4. Use an RC filter of 1 kΩ and 0.01 µF on the output of
the accelerometer to minimize clock noise (from the
switched capacitor filter circuit).
5. PCB layout of power and ground should not couple
power supply noise.
6. Accelerometer and microcontroller should not be a
high current path.
7. A/D sampling rate and any external power supply
switching frequency should be selected such that they
do not interfere with the internal accelerometer
sampling frequency. This will prevent aliasing errors.
Sensors
Freescale Semiconductor
MMA2260D
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet MMA2260.PDF ] | |
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