ADXL312 datasheet(11/32 Pages) AD

Teilenummer	ADXL312

Bauteilbeschribung	3-Axis, 짹1.5 g/짹3 g/짹6 g/짹12 g Digital Accelerometer

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ADXL312

Rev. 0 | Page 11 of 32

Table 6. Current Consumption vs. Data Rate

(TA = 25°C, VS = VDD I/O = 3.3 V)

Output Data

Rate (Hz)

Bandwidth (Hz)

Rate Code

IDD (μA)

3200

1600

1111

170

1600

800

1110

115

800

400

1101

170

400

200

1100

170

200

100

1011

170

100

50

1010

170

50

25

1001

115

25

12.5

1000

82

12.5

6.25

0111

65

6.25

3.125

0110

57

Table 7. Current Draw vs. Data Rate, Low Power Mode

(TA = 25°C, VS = VDD I/O = 3.3 V)

Output Data

Rate (Hz)

Bandwidth (Hz)

Rate Code

IDD (μA)

400

200

1100

115

200

100

1011

82

100

50

1010

65

50

25

1001

57

25

12.5

1000

50

12.5

6.25

0111

43

Autosleep Mode

Additional power savings can be had by having the ADXL312

automatically switch to sleep mode during periods of inactivity.

To enable this feature, set the THRESH_INACT register

(Address 0x25) to an acceleration threshold value. Levels of

acceleration below this threshold are regarded as no activity

levels. Set TIME_INACT (Address 0x26) to an appropriate

inactivity time period. Then set the AUTO_SLEEP bit and the

link bit in the POWER_CTL register (Address 0x2D). If the

device does not detect a level of acceleration in excess of

THRES_INACT for TIME_INACT seconds, then the device is

transitioned to sleep mode automatically. Current consumption

at the sub-8 Hz data rates used in this mode is typically 30 μA

for a VS of 3.3 V.

Standby Mode

For even lower power operation, standby mode can be used. In

standby mode, current consumption is reduced to 0.1μA

(typical). In this mode, no measurements are made. Standby

mode is entered by clearing the measure bit (Bit 3) in the

POWER_CTL register (Address 0x2D). Placing the device into

standby mode preserves the contents of the FIFO.

Ähnliche Beschreibung - ADXL312

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
Analog Devices	ADXL312	507Kb / 32P	3-Axis, 짹1.5 g/짹3 g/짹6 g/짹12 g Digital Accelerometer Rev. B
Analog Devices	ADXL312ACPZ	434Kb / 32P	3-Axis, 짹1.5 g/짹3 g/짹6 g/짹12 g Digital Accelerometer REV. 0
Freescale Semiconductor...	MMA6280QT	191Kb / 13P	짹1.5 g - 6 g Dual Axis Low-g Micromachined Accelerometer
	MMA6270Q	129Kb / 8P	짹1.5 g - 6 g Dual Axis Low-g Micromachined Accelerometer
	MMA6270QT	326Kb / 12P	짹1.5 g - 6 g Dual Axis Low-g Micromachined Accelerometer
	MMA6270QT	281Kb / 11P	짹1.5 g - 6 g Dual Axis Low-g Micromachined Accelerometer
NXP Semiconductors	MMA6270QT	242Kb / 12P	짹1.5 g - 6 g Dual Axis Low-g Micromachined Accelerometer Rev 4, 04/2008
Freescale Semiconductor...	MMA6280QT	326Kb / 12P	짹1.5 g - 6 g Dual Axis Low-g Micromachined Accelerometer
Freescale Semiconductor...	MMA6270QT	192Kb / 12P	짹1.5 g - 6 g Dual Axis Low-g Micromachined Accelerometer
NXP Semiconductors	MMA6280QT	245Kb / 13P	짹1.5 g - 6 g Dual Axis Low-g Micromachined Accelerometer Rev 4, 04/2008

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