ADXL345

Data Sheet

Rev. D | Page 4 of 40

SPECIFICATIONS

otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed.

Table 1.

Parameter

Test Conditions

Min

Typ1

Max

Unit

SENSOR INPUT

Each axis

Measurement Range

User selectable

±2, ±4, ±8, ±16

g

Nonlinearity

Percentage of full scale

±0.5

%

Inter-Axis Alignment Error

±0.1

Degrees

Cross-Axis Sensitivity2

±1

%

OUTPUT RESOLUTION

Each axis

All g Ranges

10-bit resolution

10

Bits

±2 g Range

Full resolution

10

Bits

±4 g Range

Full resolution

11

Bits

±8 g Range

Full resolution

12

Bits

±16 g Range

Full resolution

13

Bits

SENSITIVITY

Each axis

All g-ranges, full resolution

230

256

282

LSB/g

±2 g, 10-bit resolution

230

256

282

LSB/g

±4 g, 10-bit resolution

115

128

141

LSB/g

±8 g, 10-bit resolution

57

64

71

LSB/g

±16 g, 10-bit resolution

29

32

35

LSB/g

Sensitivity Deviation from Ideal

All g-ranges

±1.0

%

All g-ranges, full resolution

3.5

3.9

4.3

mg/LSB

±2 g, 10-bit resolution

3.5

3.9

4.3

mg/LSB

±4 g, 10-bit resolution

7.1

7.8

8.7

mg/LSB

±8 g, 10-bit resolution

14.1

15.6

17.5

mg/LSB

±16 g, 10-bit resolution

28.6

31.2

34.5

mg/LSB

Sensitivity Change Due to Temperature

±0.01

%/°C

0 g OFFSET

Each axis

−150

0

+150

mg

−250

0

+250

mg

±35

mg

±40

mg

0 g Offset vs. Temperature for X-, Y-Axes

±0.4

mg/°C

0 g Offset vs. Temperature for Z-Axis

±1.2

mg/°C

NOISE

X-, Y-Axes

ODR = 100 Hz for ±2 g, 10-bit resolution or

all g-ranges, full resolution

0.75

LSB rms

Z-Axis

ODR = 100 Hz for ±2 g, 10-bit resolution or

all g-ranges, full resolution

1.1

LSB rms

OUTPUT DATA RATE AND BANDWIDTH

User selectable

Output Data Rate (ODR)3, 4, 5

0.1

3200

Hz

SELF-TEST6

Output Change in X-Axis

0.20

2.10

g

Output Change in Y-Axis

−2.10

−0.20

g

Output Change in Z-Axis

0.30

3.40

g

POWER SUPPLY

2.0

2.5

3.6

V

1.7

1.8

V

Supply Current

ODR ≥ 100 Hz

140

µA

ODR < 10 Hz

30

µA

Standby Mode Leakage Current

0.1

µA

Turn-On and Wake-Up Time7

ODR = 3200 Hz

1.4

ms