ADXL105AQC Analog Devices Inc, ADXL105AQC Datasheet

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ADXL105AQC

Manufacturer Part Number
ADXL105AQC
Description
IC ACCELEROMETER SGL 14CERPAK
Manufacturer
Analog Devices Inc
Series
iMEMS®r
Datasheet

Specifications of ADXL105AQC

Rohs Status
RoHS non-compliant
Axis
X, Z
Acceleration Range
±7g
Sensitivity
250mV/g
Voltage - Supply
2.7 V ~ 5.25 V
Output Type
Analog
Bandwidth
12kHz
Mounting Type
Surface Mount
Package / Case
14-CerPak
Interface
-

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a
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 rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
GENERAL DESCRIPTION
The ADXL105 is a high performance, high accuracy and com-
plete single-axis acceleration measurement system on a single
monolithic IC. The ADXL105 offers significantly increased
bandwidth and reduced noise versus previously available micro-
machined devices. The ADXL105 measures acceleration with a
full-scale range up to 5 g and produces an analog voltage out-
*Patent Pending.
i
REV. A
put. Typical noise floor is 225 g Hz allowing signals below
2 mg to be resolved. A 10 kHz wide frequency response enables
vibration measurement applications. The product exhibits signifi-
cant reduction in offset and sensitivity drift over temperature
compared to the ADXL05.
MEM
FEATURES
Monolithic IC Chip
2 m g Resolution
10 kHz Bandwidth
Flat Amplitude Response ( 1%) to 5 kHz
Low Bias and Sensitivity Drift
Low Power 2 mA
Output Ratiometric to Supply
User Scalable g Range
On-Board Temperature Sensor
Uncommitted Amplifier
Surface Mount Package
+2.7 V to +5.25 V Single Supply Operation
1000 g Shock Survival
APPLICATIONS
Automotive
Accurate Tilt Sensing with Fast Response
Machine Health and Vibration Measurement
Affordable Inertial Sensing of Velocity and Position
Seismic Sensing
Rotational Acceleration
S
is a registered trademark of Analog Devices, Inc.
i
MEM
High Accuracy 1 g to 5 g Single Axis
S
®
Accelerometer with Analog Input
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
The ADXL105 can measure both dynamic accelerations, (typi-
cal of vibration) or static accelerations (such as inertial force,
gravity or tilt).
Output scale factors from 250 mV/g to 1.5 V/g are set using the
on-board uncommitted amplifier and external resistors. The
device features an on-board temperature sensor with an output
of 8 mV/ C for optional temperature compensation of offset vs.
temperature for high accuracy application.
The ADXL105 is available in a hermetic 14-lead surface mount
Cerpak with versions specified for the 0 C to +70 C, and
–40 C to +85 C temperature ranges.
T
OUT
ST
FUNCTIONAL BLOCK DIAGRAM
COM
X SENSOR
SENSOR
TEMP
V
World Wide Web Site: http://www.analog.com
DD
COM
A
OUT
ADXL105
V
MID
V
© Analog Devices, Inc., 1999
NIN
ADXL105*
UNCOMMITTED
V
AMPLIFIER
IN
UCA
OUT

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ADXL105AQC Summary of contents

Page 1

FEATURES Monolithic IC Chip Resolution 10 kHz Bandwidth Flat Amplitude Response ( 1 kHz Low Bias and Sensitivity Drift Low Power 2 mA Output Ratiometric to Supply User Scalable g Range On-Board Temperature Sensor ...

Page 2

ADXL105–SPECIFICATIONS Parameter SENSOR INPUT 1 Measurement Range Nonlinearity 2 Alignment Error 3 Cross Axis Sensitivity 4 SENSITIVITY (Ratiometric) Initial 5, 6 vs. Temperature 5 ZERO g BIAS LEVEL (Ratiometric) Zero g Offset Error vs. Supply 5, 7 vs. Temperature NOISE ...

Page 3

... Uncommitted Amp Inverting Input IN 12 UCA Uncommitted Amp Output OUT 13 Power Supply Voltage DD REV. A Package Characteristics Package JA 14-Lead Cerpak 110 C/W ORDERING GUIDE Model Temperature Range ADXL105JQC +70 C ADXL105AQC – +85 C PIN CONFIGURATION T 1 OUT ADXL105 COM 4 TOP VIEW (Not to Scale COM ...

Page 4

ADXL105 –Typical Performance Characteristics 120 –30 –60 –90 –120 –50 0 TEMPERATURE – C Figure 2. Typical 0 g Shift vs. Temperature –1 –2 –50 0 TEMPERATURE – C Figure ...

Page 5

SUPPLY VOLTAGE Figure 8. Typical Noise Density vs. Supply Voltage 205 210 215 220 225 230 NOISE DENSITY – g ...

Page 6

ADXL105 THEORY OF OPERATION The ADXL105 is a complete acceleration measurement system on a single monolithic IC. It contains a polysilicon surface- micromachined sensor and BiMOS signal conditioning circuitry to implement an open loop acceleration measurement architec- ture. The ADXL105 ...

Page 7

Output Scaling The acceleration output ( the ADXL105 is nominally OUT 250 mV/g. This scale factor may not be appropriate for all appli- cations. The UCA may be used to increase the scale factor. The simplest implementation would ...

Page 8

... Its frequency and phase response is essentially flat from kHz (see Figures 12 and 13). Its sensitivity is also constant over temperature (see Figure 3). In contrast, most accelerometers do not have linear response at low frequencies (in many cases, no response at very low frequencies or dc), and often have a large sensitivity tem- perature coefficient that must be compensated for. In addi- tion, the ADXL105’ ...

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