MMA2301D Datasheet, PDF (3/7 Pages) Motorola, Inc – Surface Mount Micromachined Accelerometer

Freescale Semiconductor, Inc.
OPERATING CHARACTERISTICS
(Unless otherwise noted: -40°C ≤ T_A ≤ +105°C, 4.75 ≤ VDD ≤ 5.25, Acceleration = 0g, Loaded output⁽¹⁾)
Characteristic
Symbol
Min
Typ
Max
Unit
Operating Range⁽²⁾
Supply Voltage⁽³⁾
Supply Current
Operating Temperature Range
Acceleration Range
V_DD
4.75
5.0
5.25
V
I_DD
3.0
—
6.0
mA
T_A
-40
—
+125
°C
g_FS
—
225
—
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
2.4
0.46 V_DD
9.5
1.86
360
-1.0
2.5
0.50 V_DD
10.0
2.0
400
—
2.6
0.54 V_DD
10.5
2.14
440
1.0
V
V
mV/g
mV/g/V
Hz
% FSO
Noise
RMS (.01-1 kHz)
Power Spectral Density
Clock Noise (without RC load on output)⁽⁶⁾
n_RMS
n_PSD
n_CLK
—
—
2.8
mVrms
—
110
—
µV/(Hz^1/2)
—
2.0
—
mVpk
Self-Test
Output Response
Input Low
Input High
Input Loading⁽⁷⁾
Response Time⁽⁸⁾
Status^(12)(13)
Output Low (I_load = 100 µA)
Output High (I_load = 100 µA)
g_ST
24
30
36
g
V_IL
V_SS
—
0.3 x V_DD
V
V_IH
0.7 x V_DD
—
V_DD
V
I_IN
-30
-100
-260
µA
t_ST
—
2.0
10
ms
V_OL
—
—
0.4
V
V_OH
V_DD -0.8
—
—
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 µA)
Capacitive Load Drive⁽¹⁰⁾
Output Impedance
t_DELAY
V_FSO
C_L
Z_O
—
0.25
—
—
0.2
—
ms
—
V_DD -0.25
V
—
100
pF
300
—
Ω
Mechanical Characteristics
Transverse Sensitivity⁽¹¹⁾
Package Resonance
V_XZ,YZ
—
—
5.0
% FSO
f_PKG
—
10
—
kHz
NOTES:
1. For a loaded output the measurements are observed after an RC filter consisting of a 1 kΩ resistor and a 0.01 µF 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 us, unless a fault condition continues to exist.
Motorola Sensor Device Data
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MMA2301D
3