MMA7456L(2009) 데이터 시트보기 (PDF) - Freescale Semiconductor

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MMA7456L
(Rev.:2009)

±2g/±4g/±8g Three Axis Low-g Digital Output Accelerometer

Freescale Semiconductor 

Table 3. Operating Characteristics

Unless otherwise noted: –40°C < TA < 85°C, 2.4 V < AVDD < 3.6 V, Acceleration = 0g, Loaded output.

Characteristic

Symbol

Min

Typ

Max

Analog Supply Voltage

Standby/Operation Mode

Enable Bus Mode

Digital I/O Pins Supply Voltage

Standby/Operation Mode

Enable Bus Mode

AVDD

2.4

2.8

3.6

AVDD

0

DVDD_IO

1.71

1.8

AVDD

DVDD_IO

1.71

1.8

3.6

Supply Current Drain

Operation Mode

IDD

Pulse Detect Function Mode

IDD

Standby Mode (except data loading and I2C/SPI communication period)

IDD

—

400

490

—

400

490

—

2.5

10

Operating Temperature Range

TA

-40

25

85

0g Output Signal (TA = 25°C, VDD = 2.8 V)

±2g range (25°C) 8bit

±4g range (25°C) 8bit

±8g range (25°C) 8bit

±8g range (25°C) 10bit

-18

0

18

-10

0

10

-5

0

5

-18

0

18

Sensitivity (TA = 25°C, VDD = 2.8 V)

±2g range (25°C) 8bit

±4g range (25°C) 8bit

±8g range (25°C) 8bit

±8g range (25°C) 10bit

58

64

70

29

32

35

14.5

16

17.5

58

64

70

Self-Test Output Response

ZOUT (8g - 10bit)

Temperature Compensation for Offset

Temperature Sensitivity for Offset

Input High Voltage

Input Low Voltage

Internal Clock Frequency (TA = 25°C, AVDD = 2.8 V)

SPI Frequency

DVDD_IO < 2.4 V

DVDD_IO > 2.4 V

Bandwidth for Data Measurement (User Selectable)

DFBW 0

DFBW 1

ΔSTZ

TCO

TCS

VIH

VIL

tCLK

32

±3.5

±0.026

0.7 x DVDD

—

140

64

±0.5

±0.01

—

—

150

83

+3.5

+0.026

—

0.35 x DVDD

160

—

4

—

—

8

—

—

62.5

—

—

125

—

Output Data Rate

Output Data Rate is 125 Hz when 62.5 bandwidth is selected.

Output Data rate is 250 Hz when 125Hz bandwidth is selected.

Control Timing

Wait Time for I2C/SPI ready after power on

Turn On Response Time (Standby to Normal Mode)

Turn Off Response Time (Normal to Standby Mode)

Self-Test Response Time

Sensing Element Resonant Frequency

XY

Z

Nonlinearity (2 g range)

—

125

—

—

250

—

tsu

—

1

—

tru

—

—

20

trd

—

—

20

tst

—

—

20

fGCELLXY

—

6.0

—

fGCELLZ

—

3.4

—

-1

—

+1

Cross Axis Sensitivity

-5

—

+5

Unit

V

V

V

V

μA

μA

μA

°C

count

count

count

count

count/g

count/g

count/g

count/g

count

mg/°C

mg/°C

V

V

kHz

MHz

MHz

Hz

Hz

Hz

Hz

ms

ms

ms

ms

kHz

kHz

%FS

%

Sensors

Freescale Semiconductor

MMA7456L

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