MMA7455L(2007) 데이터 시트보기 (PDF) - Freescale Semiconductor

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MMA7455L
(Rev.:2007)

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

Freescale Semiconductor 

Table 2. 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

Analog Supply Voltage

Standby/Operation Mode

Enable Bus Mode

Digital I/O Pins Supply Voltage

AVDD

2.4

2.8

AVDD

0

Standby/Operation Mode

Enable Bus Mode

DVDD_IO

1.71

1.8

DVDD_IO

1.71

1.8

Supply Current Drain (AVDD/GND)

Operation Mode

IDD

Pulse Detect Function Mode

IDD

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

IDD

—

400

—

400

—

2.5

Operating Temperature Range

Acceleration Range

X-Axis, Y-Axis, Z-Axis

TA

-40

25

gFS

—

±2

gFS

—

±4

gFS

—

±8

Output Signal (TA=25°C, AVDD = 2.8 V)

Zero g

±2g range (25°C) 8bit 0 1

±4g range (25°C) 8bit 1 0

±8g range (25°C) 8bit 0 0

±8g range (25°C) 10bit 0 0

GLVL [1:0]

VOFF

107

128

VOFF

—

VOFF

—

VOFF

491

512

Resolution (TA=25°C, AVDD = 2.8 V)

±2g range (25°C) 8bit

±4g range (25°C) 8bit

±8g range (25°C) 8bit

±8g range (25°C) 10bit

13.9

15.6

—

31.2

—

62.4

13.9

15.6

Sensitivity (TA=25°C, AVDD = 2.8 V)

±2g range (25°C) 8bit

±4g range (25°C) 8bit

±8g range (25°C) 8bit

±8g range (25°C) 10bit

ΔVOUT

58

64

ΔVOUT

—

32

ΔVOUT

—

16

ΔVOUT

58

64

Self Test Output Response

Zout

Input High Voltage

Input Low Voltage

Internal Clock Frequency

SPI Frequency

DVDD_IO < 2.4 V

DVDD_IO > 2.4 V

Bandwidth for Data Measurement (User Selectable)

DFBW 0

DFBW 1

ΔSTZ

VIH

VIL

tCLK

+48

0.7 x VDD

—

140

—

—

—

—

+64

—

—

150

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.

—

125

—

250

Max

3.6

AVDD

3.6

490

490

10

85

—

—

—

149

533

17.3

—

—

17.3

70

—

—

70

+80

—

0.35 x VDD

160

—

—

—

—

—

—

Unit

V

V

V

V

μA

μA

μA

°C

g

g

g

count

count

count

count

count/g

count/g

count/g

count/g

LSB/g

LSB/g

LSB/g

LSB/g

LSB

V

V

kHz

MHz

MHz

Hz

Hz

Hz

Hz

MMA7455L

4

Sensors

Freescale Semiconductor

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