Datasheet > ADXL195

ADXL195

更新时间： 2024-09-28 12:51:55

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
2页	79K
描述
High Performance Accelerometer with Dual Spectrum Signal Processing

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ADXL195 数据手册

High Performance Accelerometer with

Dual Spectrum Signal Processing

Data Sheet

ADXL195/ADXL295

FEATURES

GENERAL DESCRIPTION

Single-axis (ADXL195) and dual-axis (ADXL295) configurations

120 g baseband acceleration channel

12-bit resolution at 62.5 mg/LSB

The ADXL195/ADXL295 are dual spectrum accelerometers

that measure baseband acceleration in up to two axes (XL-X

and XL-Y), as well as high frequency (HF) acceleration energy.

Identical, independent X and Y sense structures are implemented

to achieve the best possible fail-safe performance.

512 kHz data interpolation rate

40 g_AVGhigh frequency signal processing channel

10-bit resolution at 83.3 mg avg/LSB

128 kHz data interpolation rate

Sensor frequency response down to dc

On-demand electromechanical self-test

On-demand HF signal injection self-test

Fully differential circuitry for high resistance to EMI/RFI

Independent x- and y-axis sense structures for robust

FMEA performance

The XL-X and XL-Y channels output baseband acceleration

information with a nominal full-scale range of 120 g and a

bandwidth of 408 Hz. The acceleration data is provided as a

12-bit, twos complement word with a resolution of 62.5 mg/LSB.

HF acceleration within the frequency band of 15.5 kHz to

23 kHz is rectified and filtered to generate an average g (g_AVG

)

energy measurement. The HF channel has a nominal full-scale

range of 40 g_AVGand a bandwidth of 393 Hz. When combined

with the XL-X and XL-Y information, HF acceleration information

allows for enhanced vehicle impact detection and discrimination.

Independent x- and y-axis arming thresholds

Low noise

1 LSB rms (12-bit baseband acceleration channel)

2 LSB rms (10-bit high frequency acceleration channel)

Qualified for automotive applications

Temperature range: −40°C to +105°C

3.3 V and 5 V operation

The ADXL195/ADXL295 are available in a 16-lead, narrow-body

SOIC package with an exposed pad. The ADXL195/ADXL295

can operate at 3.3 V and 5 V and are specified for operation from

−40°C to +105°C.

APPLICATIONS

Enhanced crash sensing

Shock detection

FUNCTIONAL BLOCK DIAGRAM

ARM_X

ARM_Y

SELF-

TEST

STATE MACHINE

HF SELF-

TEST

GND

INTERPOLATION

AT 512kHz

EPAD

OFFSET/

SENSITIVITY

CALIBRATION

SINC + FIR FILTER

OFFSET

CANCELLATION

–3dB AT 408Hz

Σ-Δ

MOD

AMP

DEMOD

MISO

MOSI

SCLK

IIR, SINC, FIR

LOW-PASS

FILTERS

BAND-PASS

FILTER

15.5kHz TO

23kHz

SENSITIVITY

CALIBRATION

INTERPOLATION

AT 128kHz

X-AXIS

SENSOR

DRIVERS

|ABS|

–3dB AT 393Hz

INTERPOLATION

AT 512kHz

OFFSET/

Σ-Δ

MOD

SINC + FIR FILTER

–3dB AT 408Hz

OFFSET

CANCELLATION

AMP

SENSITIVITY

DEMOD

CALIBRATION

DEVICE ID

TRIM

VDD

OTP

MEMORY

Y-AXIS

SENSOR

DRIVERS

VREG

CONFIGURATION

TIMING

GENERATOR

Figure 1.

For more information about the ADXL195/ADXL295, please contact the Analog Devices, Inc., Customer Interaction Center at

http://www.analog.com/en/content/technical_support_page/fca.html to connect with a technical support specialist.

Rev. SpA

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

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

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

中文翻译

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与ADXL195相关器件

型号	品牌	获取价格	描述	数据表
ADXL195WBRDZA-RL	ADI	获取价格	Single-axis, High Performance Accelerometer with Dual Spectrum Signal Processing
ADXL202	ADI	获取价格	Low Cost +-2 g/+-10 g Dual Axis iMEMS Accelerometers with Digital Output
ADXL202_15	ADI	获取价格	Accelerometers with Digital Output
ADXL202AE	ADI	获取价格	Low-Cost +-2 g Dual-Axis Accelerometer with Duty Cycle Output
ADXL202AQC	ADI	获取价格	Low Cost +-2 g/+-10 g Dual Axis iMEMS Accelerometers with Digital Output
ADXL202E	ADI	获取价格	Low-Cost +-2 g Dual-Axis Accelerometer with Duty Cycle Output
ADXL202EB	ADI	获取价格	Dual Axis Accelerometer Evaluation Board
ADXL202EB-232	ETC	获取价格	ADXL ACCEL EVAL BOARD
ADXL202JE	ADI	获取价格	Low-Cost +-2 g Dual-Axis Accelerometer with Duty Cycle Output
ADXL202JQC	ADI	获取价格	Low Cost +-2 g/+-10 g Dual Axis iMEMS Accelerometers with Digital Output

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