ADXL321JCP ,Small, Thin, Low Power, Dual Axis ±18 g Accelerometer With Analog OutputGENERAL DESCRIPTION Small and thin The ADXL321 is a small and thin, low power, complete dual-4 mm × ..
ADXL321JCP ,Small, Thin, Low Power, Dual Axis ±18 g Accelerometer With Analog OutputSPECIFICATIONS TA = 25°C, VS = 3 V, CX = CY = 0.1 µF, Acceleration = 0 g, unless otherwise noted. T ..
ADXL322EB , Small and Thin -2 g Accelerometer
ADXL322JCP-REEL , Small and Thin -2 g Accelerometer
ADXL323KCPZ-RL , Small, Low Power, 2-Axis ±3 g i MEMS Accelerometer
ADXL330KCPZ , Small, Low Power, 3-Axis ±3 g i MEMS Accelerometer
AM2833DC , 1024-Bit Static Shift Registers
AM2841ADC ,64 x 4 BITS FIRST-IN FIRST-OUT MEMORIESAm3341/ 2841/ 2841A
Distinctive Characteristics
. "Plug- In" replacement for Fairchild 3341
..
AM2841DC ,64 x 4 BITS FIRST-IN FIRST-OUT MEMORIESAm3341/ 2841/ 2841A
Distinctive Characteristics
. "Plug- In" replacement for Fairchild 3341
..
AM2841PC ,64 x 4 BITS FIRST-IN FIRST-OUT MEMORIESBLOCK DIAGRAM
Do) -- __ O0
m> - -- c,
4BIT qi511 ~53” eaw
REG‘SYER RmvsTER REGiSTER aecistsn
o ..
AM2841PC ,64 x 4 BITS FIRST-IN FIRST-OUT MEMORIESFUNCTIONAL DESCRIPTION
Parallel expansion to wider words only requires that rows of FIFOs
be pl ..
AM28F010-120EI , 1 Megabit (128 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory
ADXL321JCP
Small, Thin, Low Power, Dual Axis ±18 g Accelerometer With Analog Output
Small and Thin ±18 g AccelerometerRev. 0
FEATURES
Small and thin
4 mm × 4 mm × 1.45 mm LFCSP package
3 mg resolution at 50 Hz
Wide supply voltage range: 2.4 V to 6 V
Low power: 350 µA at VS = 2.4 V (typ)
Good zero g bias stability
Good sensitivity accuracy
X-axis and Y-axis aligned to within 0.1° (typ)
BW adjustment with a single capacitor
Single-supply operation
10,000 g shock survival
Compatible with Sn/Pb and Pb-free solder processes
APPLICATIONS
Vibration monitoring and compensation
Abuse event detection
Sports equipment
GENERAL DESCRIPTION The ADXL321 is a small and thin, low power, complete dual-
axis accelerometer with signal conditioned voltage outputs,
which is all on a single monolithic IC. The product measures
acceleration with a full-scale range of ±18 g (typical). It can also
measure both dynamic acceleration (vibration) and static
acceleration (gravity).
The ADXL321’s typical noise floor is 320 µg/√Hz, allowing
signals below 3 mg to be resolved in tilt-sensing applications
using narrow bandwidths (<50 Hz).
The user selects the bandwidth of the accelerometer using
capacitors CX and CY at the XOUT and YOUT pins. Bandwidths of
0.5 Hz to 2.5 kHz may be selected to suit the application.
The ADXL321 is available in a very thin 4 mm × 4 mm ×
1.45 mm, 16-lead, plastic LFCSP.
FUNCTIONAL BLOCK DIAGRAM +3V
CDC
Figure 1.
TABLE OF CONTENTS Specifications.....................................................................................3
Absolute Maximum Ratings............................................................4
ESD Caution..................................................................................4
Pin Configuration and Function Descriptions.............................5
Typical Performance Characteristics (VS = 3.0 V).......................7
Theory of Operation......................................................................11
Performance................................................................................11
Applications.....................................................................................12
Power Supply Decoupling.........................................................12
Setting the Bandwidth Using CX and CY.................................12
Self-Test.......................................................................................12
Design Trade-Offs for Selecting Filter Characteristics: The
Noise/BW Trade-Off..................................................................12
Use with Operating Voltages Other than 3 V.............................13
Use as a Dual-Axis Tilt Sensor.................................................13
Outline Dimensions.......................................................................14
Ordering Guide..........................................................................14
REVISION HISTORY
12/04—Revision 0: Initial Version
SPECIFICATIONS1 TA = 25°C, VS = 3 V, CX = CY = 0.1 µF, Acceleration = 0 g, unless otherwise noted.
Table 1. 1 All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed. Sensitivity is essentially ratiometric to VS.
3 Defined as the change from ambient-to-maximum temperature or ambient-to-minimum temperature. Actual frequency response controlled by user-supplied external capacitor (CX, CY).
5 Bandwidth = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.002 µF, bandwidth = 2500 Hz. For CX, CY = 10 µF, bandwidth = 0.5 Hz. Minimum/maximum values are not tested. Self-test response changes cubically with VS.
7 Larger values of CX, CY increase turn-on time. Turn-on time is approximately 160 × CX or CY + 4 ms, where CX, CY are in µF.
ABSOLUTE MAXIMUM RATINGS
Table 2. Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate
on the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS XOUTNC
COMYOUTNC
COMCOMCOMNCNC
NC = NO CONNECT
ADXL321
TOP VIEW(Not to Scale)05291-002
678151413Figure 2. Pin Configuration
Table 3. Pin Function Descriptions t25°C TO PEAK
RATURE
TIME
Figure 3. Recommended Soldering Profile
Table 4. Recommended Soldering Profile TYPICAL PERFORMANCE CHARACTERISTICS (VS = 3.0 V) 1.401.421.441.461.481.501.521.541.561.581.60VOLTS
% OF POPU
TION
Figure 4. X-Axis Zero g Bias at 25°C
–10–8–6–4–20246810mg/°C
% OF POPU
TION
Figure 5. X-Axis Zero g Bias Temperature Coefficient
525354555657585960mV/g
% OF POPU
TION
Figure 6. X-Axis Sensitivity at 25°C
1.401.421.441.461.481.501.521.541.561.581.60VOLTS
% OF POPU
TION
Figure 7. Y-Axis Zero g Bias at 25°C
–10–8–6–4–20246810mg/°C
% OF POPU
TION
Figure 8. Y-Axis Zero g Bias Temperature Coefficient
525354555657585960mV/g
% OF POPU
TION
Figure 9. Y-Axis Sensitivity at 25°C
1.400–30–20–1001020304050607080TEMPERATURE (°C)
OUTP
UT (S
CALE
= 5
Figure 10. Zero g Bias vs. Temperature—Parts Soldered to PCB
200220240260280300320340NOISE DENSITY (µg/ Hz)
% OF POPU
TION
Figure 11. X-Axis Noise Density at 25°C
–5–4–3–2–1012345PERCENT SENSITIVITY (%)
% OF POPU
TION
Figure 12. Z vs. X Cross-Axis Sensitivity
0.052–30–1010305070SEN
SITIVITY (
TEMPERATURE (°C)
Figure 13. Sensitivity vs. Temperature—Parts Soldered to PCB
200220240260280300320340NOISE DENSITY (µg/ Hz)
% OF POPU
TION
Figure 14. Y-Axis Noise Density at 25°C
–5–4–3–2–1012345PERCENT SENSITIVITY (%)
% OF POPU
TION
Figure 15. Z vs. Y Cross-Axis Sensitivity
