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PDF MMA1210D Data sheet ( Hoja de datos )
| Número de pieza | MMA1210D | |
| Descripción | Surface Mount Micromachined Accelerometer | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order number: MMA1210D
Rev 1, 1/2004
Surface Mount
Micromachined Accelerometer
The MMA series of silicon capacitive, micromachined accelerome-
ters features signal conditioning, a 4-pole low pass filter and tempera-
ture compensation. Zero-g offset full scale span and filter cut-off are
factory set and require no external devices. A full system self-test capa-
bility verifies system functionality.
Features
• Integral Signal Conditioning
• Linear Output
www.D•ataRShaetieotm4Ue.ctroicmPerformance
• 4th Order Bessel Filter Preserves Pulse Shape Integrity
• Calibrated Self-test
• Low Voltage Detect, Clock Monitor, and EPROM Parity Check
Status
• Transducer Hermetically Sealed at Wafer Level for Superior
Reliability
• Robust Design, High Shocks Survivability
Typical Applications
• Vibration Monitoring and Recording
• Impact Monitoring
ORDERING INFORMATION
Device
Temperature
Range
Case No.
MMA1210D
– 40 to +125°C
Case 47--01
MMA1210DR2
– 40 to +125°C
Case 475-01
Package
SOIC-16
SOIC-16, Tape & Reel
MMA1210D
MMA1210D: Z AXIS SENSITIVITY
MICROMACHINED
ACCELEROMETER
±100g
16 LEAD SOIC
CASE 475-01
PIN ASSIGNMENT
N/C
N/C
N/C
ST
VOUT
STATUS
VSS
VDD
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
G-CELL
SENSOR
INTEGRATOR
GAIN
FILTER
TEMP
COMP
VDD
VOUT
ST
SELF-TEST
CONTROL LOGIC &
EPROM TRIM CIRCUITS
OSCILLATOR
CLOCK GEN.
VSS
STATUS
REV 1
Figure 1. Simplified Accelerometer Functional Block Diagram
This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Motorola, Inc. 2004
For More Information On This Product,
Go to: www.freescale.com
1 page  
Freescale Semiconductor, Inc.
The fault latch can be reset by a rising edge on the self-
test input pin, unless one (or more) of the fault conditions
continues to exist.
BASIC CONNECTIONS
Pinout Description
N/C
N/C
N/C
ST
VOUT
STATUS
VSS
www.DataSheet4U.com VDD
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
Pin No.
1 thru 3
4
5
6
7
8
9 thru 13
14 thru 16
Pin Name
—
ST
VOUT
STATUS
VSS
VDD
Trim pins
—
Description
Leave unconnected.
Logic input pin used to
initiate self-test.
Output voltage of the
accelerometer.
Logic output pin to
indicate fault.
The power supply
ground.
The power supply input.
Used for factory trim.
Leave unconnected.
No internal connection.
Leave unconnected.
VDD
LOGIC
INPUT
C1
0.1 µF
MMA1210D
6
4 ST
R1
8 VDD
VOUT 5 1 kΩ
7 VSS
C2
0.01 µF
STATUS
OUTPUT
SIGNAL
STATUS
P1
ST P0
VOUT
VSS
VDD
R A/D IN
1 kΩ C 0.01 µF
C 0.1 µF
VRH
C 0.1 µF
VSS
C 0.1 µF
VDD
POWER SUPPLY
Figure 5. Recommended PCB Layout for Interfacing
Accelerometer to Microcontroller
NOTES:
• Use a 0.1 µF capacitor on VDD to decouple the power
source.
• Physical coupling distance of the accelerometer to the
microcontroller should be minimal.
• 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 5.
• 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).
• PCB layout of power and ground should not couple power
supply noise.
• Accelerometer and microcontroller should not be a high
current path.
• 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.
Figure 4. SOIC Accelerometer with
Recommended Connection Diagram
MOTOROLA
Surface Mount Micromachined Accelerometer
For More Information On This Product,
Go to: www.freescale.com
5
MMA1210D
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MMA1210D.PDF ] | |
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