AD22281-R2 View Datasheet(PDF) - Analog Devices

Part Name

Description

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AD22281-R2

Single-Axis, High-g, iMEMS® Accelerometers

Analog Devices 

FEATURES

Complete acceleration measurement system on a single

monolithic IC

Available in ±35 g, ±50 g, or ±70 g output full-scale ranges

Full differential sensor and circuitry for high resistance

to EMI/RFI

Environmentally robust packaging

Complete mechanical and electrical self-test on

digital command

Output ratiometric to supply

Sensitive axes in the plane of the chip

High linearity (0.2% of full scale)

Frequency response down to dc

Low noise

Low power consumption (1.3 mA)

Tight sensitivity tolerance and 0 g offset capability

Largest available prefilter clipping headroom

400 Hz, 2-pole Bessel filter

Single-supply operation

Compatible with Sn/Pb and Pb-free solder processes

Qualified for automotive applications

APPLICATIONS

Vibration monitoring and control

Vehicle collision sensing

Shock detection

Single-Axis, High-g,

iMEMS® Accelerometers

ADXL78

GENERAL DESCRIPTION

The ADXL78 is a low power, complete single-axis accelerometer

with signal conditioned voltage outputs that are on a single

monolithic IC. This product measures acceleration with a full-

scale range of ±35 g, ±50 g, or ±70 g (minimum). It can also

measure both dynamic acceleration (vibration) and static

acceleration (gravity).

The ADXL78 is the fourth-generation surface micromachined

iMEMS® accelerometer from ADI with enhanced performance

and lower cost. Designed for use in front and side impact airbag

applications, this product also provides a complete cost-

effective solution useful for a wide variety of other applications.

The ADXL78 is temperature stable and accurate over the

automotive temperature range, with a self-test feature that fully

exercises all the mechanical and electrical elements of the

sensor with a digital signal applied to a single pin.

The ADXL78 is available in a 5 mm × 5 mm × 2 mm,

8-terminal ceramic LCC package.

VS

VDD

VDD2

FUNCTIONAL BLOCK DIAGRAM

TIMING

GENERATOR

ADXL78

EXC

DIFFERENTIAL

SENSOR

DEMOD

AMP

400Hz

BESSEL

FILTER

XOUT

SELF-TEST

Figure 1.

Rev. B

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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

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

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Fax: 781.461.3113

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