參數(shù)資料
型號(hào)： MMA1212D
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Surface Mount Micromachined Accelerometer(表面安裝微電機(jī)加速計(jì))
中文描述： 表面貼裝微加速度計(jì)（表面安裝微電機(jī)加速計(jì)）
文件頁(yè)數(shù)： 3/8頁(yè)
文件大?。?/td> 161K
代理商： MMA1212D
Motorola Sensor Device Data
MMA1212D
3
Operating Characteristics
(Unless otherwise noted: –40°C
≤
T
A
≤
+105°C, 4.75
≤
V
DD
≤
5.25, Acceleration = 0g, Loaded output.
(1)
)
NOTES:
1. For a loaded output the measurements are observed after an RC filter consisting of a 1 k
resistor and a 0.01
μ
F capacitor to ground.
2. These limits define the range of operation for which the part will meet specification.
3. Within the supply range of 4.75 and 5.25 volts, the device operates as a fully calibrated linear accelerometer. Beyond these supply limits the
device may operate as a linear device but is not guaranteed to be in calibration.
4. The device can measure both + and – acceleration. With no input acceleration the output is at midsupply. For positive acceleration the output
will increase above V
DD
/2 and for negative acceleration the output will decrease below V
DD
/2.
5. The device is calibrated at 35g.
6. At clock frequency
70 kHz.
7. The digital input pin has an internal pull-down current source to prevent inadvertent self test initiation due to external board level leakages.
8. Time for the output to reach 90% of its final value after a self-test is initiated.
9. Time for amplifiers to recover after an acceleration signal causing them to saturate.
10. Preserves phase margin (60°) to guarantee output amplifier stability.
11. A measure of the device's ability to reject an acceleration applied 90° from the true axis of sensitivity.
12. The Status pin output is not valid following power-up until at least one rising edge has been applied to the self-test pin. The Status pin is high
whenever the self-test input is high, as a means to check the connectivity of the self-test and Status pins in the application.
13. The Status pin output latches high if a Low Voltage Detection or Clock Frequency failure occurs, or the EPROM parity changes to odd. The
Status pin can be reset low if the self-test pin is pulsed with a high input for at least 100
μ
s, unless a fault condition continues to exist.
Characteristic
Symbol
Min
Typ
Max
Unit
Operating Range
(2)
Supply Voltage
(3)
Supply Current
Operating Temperature Range
Acceleration Range
V
DD
I
DD
T
A
g
FS
4.75
3.0
–40
—
5.00
—
—
225
5.25
6.0
+125
—
V
mA
C
g
Output Signal
Zero g (T
A
= 25°C, V
DD
= 5.0 V)
(4)
Zero g
Sensitivity (T
A
= 25°C, V
DD
= 5.0 V)
(5)
Sensitivity
Bandwidth Response
Nonlinearity
V
OFF
V
OFF,V
S
S
V
f
–3dB
NL
OUT
2.35
0.47V
DD
9.5
1.86
360
–2.0
2.5
0.50
V
DD
10
2
400
—
2.65
0.53
V
DD
10.5
2.14
440
2.0
V
V
mV/g
mV/g/V
Hz
% FSO
Noise
RMS (0.1-1 kHz)
Power Spectral Density
Clock Noise (without RC load on output)
(6)
n
RMS
n
PSD
n
CLK
—
—
—
—
110
2.0
2.8
—
—
mVrms
μ
V/(Hz
1/2
)
mVpk
Self-Test
Output Response
Input Low
Input High
Input Loading
(7)
Response Time
(8)
g
ST
V
IL
V
IH
I
IN
t
ST
55
V
SS
0.7
×
V
DD
–30
—
75
—
—
–100
2.0
95
0.3
×
V
DD
V
DD
–260
10
g
V
V
μ
A
ms
Status
(12)(13)
Output Low (I
load
= 100
μ
A)
Output High (I
load
= 100
μ
A)
V
OL
V
OH
—
V
DD
–.8
—
—
0.4
—
V
V
Minimum Supply Voltage (LVD Trip)
V
LVD
2.7
3.25
4.0
V
Clock Monitor Fail Detection Frequency
f
min
50
—
260
kHz
Output Stage Performance
Electrical Saturation Recovery Time
(9)
Full Scale Output Range (I
OUT
= 200
μ
A)
Capacitive Load Drive
(10)
Output Impedence
t
DELAY
V
FSO
C
L
Z
O
—
0.25
—
—
0.2
—
—
300
—
V
DD
–0.25
100
—
ms
V
pF
Mechanical Characteristics
Transverse Sensitivity
(11)
Package Resonance
V
XZ,YZ
f
PKG
—
—
—
10
5.0
—
% FSO
kHz
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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PDF描述
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MMA1220D Low G Micromachined Accelerometer(小重力微電機(jī)加速計(jì))
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