MMA7260Q 데이터 시트보기 (PDF) - Freescale Semiconductor

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MMA7260Q

±1.5g - 6g Three Axis Low-g Micromachined Accelerometer

Freescale Semiconductor 

Table 2. Operating Characteristics

Unless otherwise noted: –20°C < TA < 85°C, 2.2 V < VDD < 3.6 V, Acceleration = 0g, Loaded output(1)

Characteristic

Symbol

Min

Typ

Max

Unit

Operating Range(2)

Supply Voltage(3)

Supply Current

Supply Current at Sleep Mode(4)

Operating Temperature Range

Acceleration Range, X-Axis, Y-Axis, Z-Axis

g-Select1 & 2: 00

g-Select1 & 2: 10

g-Select1 & 2: 01

g-Select1 & 2: 11

VDD

2.2

3.3

3.6

V

IDD

—

500

800

µA

IDD

—

3

10

µA

TA

–20

—

+85

°C

gFS

—

±1.5

—

g

gFS

—

±2.0

—

g

gFS

—

±4.0

—

g

gFS

—

±6.0

—

g

Output Signal

Zero g (TA = 25°C, VDD = 3.3 V)(5)

Zero g

Sensitivity (TA = 25°C, VDD = 3.3 V)

1.5g

2g

4g

6g

Sensitivity

Bandwidth Response

XY

Z

VOFF

VOFF, TA

S1.5g

S2g

S4g

S6g

S,TA

f-3dB

f-3dB

1.485

—

740

555

277.5

185

—

—

—

1.65

±2

800

600

300

200

±3

350

150

1.815

—

860

645

322.5

215

—

—

—

V

mg/°C

mV/g

mV/g

mV/g

mV/g

%/°C

Hz

Hz

Noise

RMS (0.1 Hz – 1 kHz)(4)

Power Spectral Density RMS (0.1 Hz – 1 kHz)(4)

nRMS

nPSD

—

4.7

—

350

—

mVrms

—

µg/ Hz

Control Timing

Power-Up Response Time(6)

Enable Response Time(7)

Sensing Element Resonant Frequency

XY

Z

Internal Sampling Frequency

tRESPONSE

—

1.0

2.0

ms

tENABLE

—

0.5

2.0

ms

fGCELL

—

6.0

—

kHz

fGCELL

—

3.4

—

kHz

fCLK

—

11

—

kHz

Output Stage Performance

Full-Scale Output Range (IOUT = 30 µA)

VFSO

VSS+0.25

—

VDD–0.25

V

Nonlinearity, XOUT, YOUT, ZOUT

NLOUT

–1.0

—

+1.0

%FSO

Cross-Axis Sensitivity(8)

VXY, XZ, YZ

—

—

5.0

%

1. For a loaded output, the measurements are observed after an RC filter consisting of a 1.0 kΩ resistor and a 0.1 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 2.2 and 3.6 V, 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. This value is measured with g-Select in 1.5g mode.

5. 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. For negative acceleration, the output will decrease below VDD/2.

6. The response time between 10% of full scale Vdd input voltage and 90% of the final operating output voltage.

7. The response time between 10% of full scale Sleep Mode input voltage and 90% of the final operating output voltage.

8. A measure of the device’s ability to reject an acceleration applied 90° from the true axis of sensitivity.

Sensors

Freescale Semiconductor

MMA7260Q

2-3

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