XMMA1000P Просмотр технического описания (PDF) - Motorola => Freescale

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XMMA1000P

Micromachined Accelerometer

Motorola => Freescale 

XMMA1000P XMMA2000W

v v v v OPERATING CHARACTERISTICS

(Unless otherwise noted: –40° TA +85°, 4.75 VDD 5.25, Acceleration = 0g, Loaded output(1))

Characteristic

Symbol

Min

Typ

Sensitivity (TA = 25°C, VDD = 5.0 V)(2)

Sensitivity(2)

∆S

37.2

40

∆S

7.36

8.0

Zero Accel Output(3) (VDD = 5.0 V)

VOFF

2.2

2.5

Zero Accel Output

VOFF

0.44 VDD 0.5 VDD

Acceleration Range(4)

G

44

50

Noise (10 Hz to 400 Hz)(5)

Clock Noise(6)

Filter Cut Off Frequency

VN

—

—

VNC

—

2.0

*F 3dB

360

400

Self–Test Output Response

GST

20

25

Self–Test Input Low

VIL

—

—

Self–Test Input High

Self–Test Input Loading(7)

Self–Test Response Time(8)

Electrical Saturation Recovery Time(9)

VIH

3.7

—

IIN

30

60

tST

—

2.0

—

—

0.2

Full Scale Output Range (IOUT = 200 µA)

Capacitive Load Drive(10)

Output Impedance

Nonlinearity

Alignment Error

Transverse Sensitivity(11)

VFSO

CL

ZO

—

—

—

0.3

—

—

—

—

300

—

1.0

—

"3.0

—

3.0

Max

42.8

8.64

2.8

0.56 VDD

—

3.5

—

440

30

1.4

—

120

—

—

* VDD 0.3

100

—

—

—

—

Unit

mV/g

mV/V/g

V

V

g

mVrms

mVpk

Hz

g

V

V

µA

ms

ms

V

pF

Ω

% FSO

degrees

% FSO

Package Resonance (DIP/WB)

—

—

10/5

—

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. The device is calibrated at 20g.

3. The device can measure both + and acceleration. With no input acceleration the output is at midsupply. For positive acceleration the output

will increase above VDD/2 and for negative acceleration the output will decrease below VDD/2.

4. Refer to the Principle of Operation section for a sample g range calculation.

^ 5. Refer to the Principle of Operation section for a sample rms to peak to peak calculation.

6. At clock frequency 65 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 devices ability to reject an acceleration applied 90° from the true axis of sensitivity.

Motorola Sensor Device Data

3

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