Data Sheet

ADXL356/ADXL357/ADXL357B

SPECIFICATIONS

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Rev. C | 5 of 52

Table 1. (Continued)

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

Current

Measurement Mode

VSUPPLY

LDO regulator enabled

150

µA

V1P8ANA

LDO regulator disabled

138

µA

V1P8DIG

LDO regulator disabled

12

µA

Standby Mode

VSUPPLY

LDO regulator enabled

21

µA

V1P8ANA

LDO regulator disabled

7

µA

V1P8DIG

LDO regulator disabled

10

µA

Turn On Time9

10 g range

10

ms

Power-off to standby

<10

ms

OUTPUT AMPLIFIER

XOUT, YOUT, ZOUT, and TEMP pins

Swing

No load

0.03

V1P8ANA − 0.03

V

Output Series Resistance

32

kΩ

TEMPERATURE SENSOR

Output at 25°C

967

mV

Standard Deviation

6

mV

Scale Factor

3.0

mV/°C

TEMPERATURE

Operating Temperature Range

−40

+125

°C

1 The resonant frequency is a sensor characteristic.

2 Repeatability is predicted for a 10 year life and includes shifts due to the high temperature operating life (HTOL) (TA = 150°C, VSUPPLY = 3.6 V, and 1000 hours),

temperature cycling (−55°C to +125°C and 1000 cycles), velocity random walk, broadband noise, and temperature hysteresis. Repeatability in relation to time follows the

square root law. For example, to obtain offset repeatability of the x-axis for 2.5 years, use the following equation: ±4.25 mg × √(2.5 years/10 years) = ±2.125 mg.

3 The temperature change is −40°C to +25°C, or +25°C to +125°C.

4 The VRE measurement is the shift in dc offset while the device is subject to 7.5 g rms of random vibration from 50 Hz to 2 kHz. The device under test (DUT) is configured

for the ±10 g range and an output data rate of 4 kHz. The VRE scales with the range setting.

5 Based on characterization.

6 Overall transfer function includes the sensor mechanical response and all other filters on the signal chain.

7 ±10 g indicates a test condition. The self test result converted to the acceleration value is independent of the selected range.

8 When V1P8ANA and V1P8DIG are generated internally, VSUPPLY is valid. To disable the LDO regulator and drive V1P8ANA and V1P8DIG externally, connect VSUPPLY to VSS.

9 Standby to measurement mode. This specification is valid when the output is within 5 mg of the final value.

ADXL357 (DIGITAL OUTPUT)

TA = 25°C, VSUPPLY = 3.3 V, x-axis acceleration and y-axis acceleration = 0 g, z-axis acceleration = 1 g, full-scale range = ±10 g, and output

data rate (ODR) = 500 Hz, unless otherwise noted. Note that multifunction pin names may be referenced only by their relevant function.

Table 2.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

SENSOR INPUT

Each axis

Output Full-Scale Range (FSR)

User selectable, supports three ranges

±10

g

±20

g

±40

g

Resonant Frequency1

X-axis and y-axis

5.5

kHz

Z-axis

5.1

kHz

Quality Factor

X-axis

18

Y-axis

15