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Table 2. Operating Characteristics
(Unless otherwise noted: –40 ° C ≤ T A ≤ +105 ° C, 4.75 ≤ V DD ≤ 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
I DD
T A
g FS
4.75
1.1
–40
–
5.00
2.2
–
1.5
5.25
3.2
+105
–
V
mA
° C
g
Output Signal
Zero g (V DD = 5.0 V) (4)
Sensitivity (T A = 25 ° C, V DD = 5.0 V) (5)
Sensitivity (V DD = 5.0 V) (5)
Bandwidth Response
Nonlinearity
V OFF
S
S
f –3dB
NL OUT
2.3
1140
1110
40
–1.0
2.5
1200
1200
50
–
2.7
1260
1290
60
+1.0
V
mV/g
mV/g
Hz
% FSO
Noise
RMS (0.1 Hz – 1.0 kHz)
Spectral Density (RMS, 0.1 Hz – 1.0 kHz) (6)
n RMS
n SD
–
–
3.5
350
–
–
mVrms
μ g/ √ Hz
Self-Test
Output Response (V DD = 5.0 V)
Input Low
Input High
Input Loading (7)
Response Time (8)
? V ST
V IL
V IH
I IN
t ST
0.3
V SS
0.7 V DD
–50
–
0.4
–
–
–125
20
0.5
0.3 V DD
V DD
–300
25
V
V
V
μ A
ms
Status (9)(10)
Output Low (I load = 100 μ A)
Output High (I load = –100 μ A)
V OL
V OH
–
V DD –0.8
–
–
0.4
–
V
V
Output Stage Performance
Electrical Saturation Recovery Time (11)
Full Scale Output Range (I OUT = –200 μ A)
Capacitive Load Drive (12)
Output Impedance
t DELAY
V FSO
C L
Z O
–
V SS +0.25
–
–
–
–
–
50
2.0
V DD –0.25
100
–
ms
V
pF
?
Mechanical Characteristics
Transverse Sensitivity (13)
V YX,ZX
–
–
5.0
% FSO
1. For a loaded output the measurements are observed after an RC filter consisting of a 1 k ? resistor and a 0.1 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. Sensitivity limits apply to 0 Hz acceleration.
6. At clock frequency ? 34 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. 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.
10. The Status pin output latches high if the EPROM parity changes to odd. The Status pin can be reset by a rising edge on self-test, unless a
fault condition continues to exist.
11. Time for amplifiers to recover after an acceleration signal causes them to saturate.
12. Preserves phase margin (60 ° ) to guarantee output amplifier stability.
13. A measure of the device's ability to reject an acceleration applied 90 ° from the true axis of sensitivity.
MMA2260D
Sensors
Freescale Semiconductor
3
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