MMA7330LR2 datasheet(3/10 Pages) FREESCALE

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Sensors

Freescale Semiconductor

MMA7330L

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(4)

Supply Current at Sleep Mode(4)

Operating Temperature Range

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

g-Select: 0

g-Select: 1

VDD

IDD

gFS

2.2

—

–20

—

2.8

400

—

±4

±16

3.6

600

+85

—

µA

°C

Output Signal

Zero g (TA = 25°C, VDD = 2.8 V)(5)

Zero g(4)

Sensitivity (TA = 25°C, VDD = 2.8 V)

16g

Sensitivity(4)

Bandwidth Response

Output Impedance

VOFF

VOFF, TA

S4g

S16g

S,TA

f-3dBXY

f-3dBZ

1.316

—

289.5

72.3

—

1.4

±2.0

308

±0.03

400

300

1.484

—

326.5

81.7

—

mg/°C

mV/g

%/°C

Ω

Self Test

Output Response

XOUT, YOUT

ZOUT

Input Low

Input High

∆gSTXY

∆gSTZ

VIL

VIH

—

VSS

0.7 VDD

-0.1

+1.0

—

0.3 VDD

VDD

Noise

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

nPSD

—

350

—

µg/

Control Timing

Power-Up Response Time(6)

Enable Response Time(7)

Self Test Response Time(8)

Sensing Element Resonant Frequency

Internal Sampling Frequency

tRESPONSE

tENABLE

tST

fGCELLXY

fGCELLZ

fCLK

—

1.0

0.5

2.0

6.0

3.4

2.0

5.0

—

kHz

Output Stage Performance

Full-Scale Output Range (IOUT = 30 µA)

VFSO

VSS+0.25

—

VDD–0.25

Nonlinearity, XOUT, YOUT, ZOUT

NLOUT

–1.0

—

+1.0

%FSO

Cross-Axis Sensitivity(9)

VXY, XZ, YZ

-5.0

—

+5.0

1. For a loaded output, the measurements are observed after an RC filter consisting of an internal 32k

Ω resistor and an external 3.3nF capacitor

on the analog output for each axis and a 0.1

µF capacitor on Vdd - GND.

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 4g 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. The response time between 10% of the full scale self test input voltage and 90% of the self test output voltage.

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

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