Data Sheet

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Small, Low Power, 3-Axis ±3 g

Accelerometer

Preliminary Technical Data

ADXL335

Rev. PrA

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rights of third parties that may result from its use. Specifications subject to change without notice. No

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Tel: 781.329.4700 www.analog.com

FEATURES

3-axis sensing

Small, low-profile package

4 mm × 4 mm × 1.45 mm LFCSP

Low power - 350 μA (typical)

Single-supply operation

1.8 V to 3.6 V

10,000 g shock survival

Excellent temperature stability

BW adjustment with a single capacitor per axis

RoHS/WEEE lead-free compliant

APPLICATIONS

Cost-sensitive, low power, motion- and tilt-sensing

applications

Mobile devices

Gaming systems

Disk drive protection

Image stabilization

Sports and health devices

GENERAL DESCRIPTION

The ADXL335 is a small, thin, low power, complete 3-axis

accelerometer with signal conditioned voltage outputs. The

product measures acceleration with a minimum full-scale range

of ±3 g. It can measure the static acceleration of gravity in tilt-

sensing applications, as well as dynamic acceleration resulting

from motion, shock, or vibration.

The user selects the bandwidth of the accelerometer using the

, C

, and C

capacitors at the X

OUT

, Y

OUT

, and Z

OUT

pins.

Bandwidths can be selected to suit the application, with a

range of 0.5 Hz to 1600 Hz for X and Y axes, and a range of

0.5 Hz to 550 Hz for the Z axis.

The ADXL335 is available in a small, low profile, 4 mm × 4 mm

× 1.45 mm, 16-lead, plastic lead frame chip scale package

(LFCSP_LQ).

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

3-Axis

Sensor

Amp

Demod

Output

Amp

Output

Amp

Output

Amp

ADXL335

~32kΩ

COM ST

OUT

+3V

3-Axis

Sensor

Amp

Demod

Output

Amp

Output

Amp

Output

Amp

ADXL335

~32kΩ

COM ST

OUT

+3V

元器件交易网www.cecb2b.com

Summary of content (11 pages)

PAGE 1
元器件交易网www.cecb2b.com Preliminary Technical Data Small, Low Power, 3-Axis ±3 g Accelerometer ADXL335 FEATURES GENERAL DESCRIPTION 3-axis sensing Small, low-profile package 4 mm × 4 mm × 1.45 mm LFCSP Low power - 350 μA (typical) Single-supply operation 1.8 V to 3.
PAGE 2
元器件交易网www.cecb2b.com ADXL335 Preliminary Technical Data TABLE OF CONTENTS Features .............................................................................................. 1 Performance ...................................................................................6 Applications ....................................................................................... 1 Applications........................................................................................7 General Description ...
PAGE 3
元器件交易网www.cecb2b.com Preliminary Technical Data ADXL335 SPECIFICATIONS TA = 25°C, VS = 3 V, CX = CY = CZ = 0.1 μF, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed. Table 1.
PAGE 4
元器件交易网www.cecb2b.com ADXL335 Preliminary Technical Data ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Acceleration (Any Axis, Unpowered) Acceleration (Any Axis, Powered) VS All Other Pins Output Short-Circuit Duration (Any Pin to Common) Temperature Range (Powered) Temperature Range (Storage) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
PAGE 5
元器件交易网www.cecb2b.com Preliminary Technical Data ADXL335 NC NC Vs NC PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 0.50 MAX 4 0.65 16 NC 1 15 14 0.325 13 ADXL335 12 XOUT 0.35 MAX 0.65 TOP VIEW (Not to Scale) NC 4 +Z +X COM 5 6 NC 10 YOUT 9 NC 4 7 8 1.95 0.325 CENTER PAD IS NOT INTERNALLY CONNECTED BUT SHOULD BE SOLDERED FOR MECHANICAL INTEGRITY 1.95 ZOUT 3 NC NC 11 +Y DIMENSIONS SHOWN IN MILLIMETERS Figure 4. Recommended PCB Layout Figure 3.
PAGE 6
元器件交易网www.cecb2b.com ADXL335 Preliminary Technical Data THEORY OF OPERATION The ADXL335 is a complete 3-axis acceleration measurement system. The ADXL335 has a measurement range of ±3 g minimum. It contains a polysilicon surface micromachined sensor and signal conditioning circuitry to implement an openloop acceleration measurement architecture. The output signals are analog voltages that are proportional to acceleration.
PAGE 7
元器件交易网www.cecb2b.com Preliminary Technical Data ADXL335 APPLICATIONS POWER SUPPLY DECOUPLING For most applications, a single 0.1 μF capacitor, CDC, placed close to the ADXL335 supply pins adequately decouples the accelerometer from noise on the power supply. However, in applications where noise is present at the 50 kHz internal clock frequency (or any harmonic thereof), additional care in power supply bypassing is required as this noise can cause errors in acceleration measurement.
PAGE 8
元器件交易网www.cecb2b.com ADXL335 Preliminary Technical Data The ADXL335 output is ratiometric, therefore, the output sensitivity (or scale factor) varies proportionally to the supply voltage. At VS = 3.6 V, the output sensitivity is typically 360 mV/g. At VS = 2 V, the output sensitivity is typically 195 mV/g. At VS = 2 V, the self test response is approximately −60 mV for the X-axis, +60 mV for the Y-axis, and −25 mV for the Z-axis.
PAGE 9
元器件交易网www.cecb2b.com Preliminary Technical Data ADXL335 OUTLINE DIMENSIONS 0.20 MIN PIN 1 INDICATOR 0.20 MIN 13 PIN 1 INDICATOR 4.15 4.00 SQ 3.85 0.65 BSC TOP VIEW 16 1 12 BOTTOM VIEW 9 4 8 0.55 0.50 0.45 2.43 1.75 SQ 1.08 5 1.95 BSC 0.05 MAX 0.02 NOM SEATING PLANE 0.35 0.30 0.25 COPLANARITY 0.05 *STACKED DIE WITH GLASS SEAL. 072606-A 1.50 1.45 1.40 Figure 7. 16-Lead Lead Frame Chip Scale Package [LFCSP_LQ] 4 mm × 4 mm Body, 1.
PAGE 10
元器件交易网www.cecb2b.com ADXL335 Preliminary Technical Data NOTES Rev.
PAGE 11
元器件交易网www.cecb2b.com Preliminary Technical Data ADXL335 NOTES ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR07808-0-9/08(PrA) Rev.