Meggitt Endevco® Model 12M9 SMT Mount Low-Cost Accelerometer0 pages

Model 12m9
Piezoelectic accelerometer
Features
Description
• For SMT Installation
• Light Weight (85 mg)
• High Output Efficiency
• Low Cost/OEM Applications
• Single connector, flexible cable
The Endevco model 12M9 Picochip is a high performance
piezoelectric accelerometer packaged for surface mounting.
The unit is engineered for integration into standard
hybrid electronics packages allowing the user to create
miniaturized shock and vibration measurement systems.
The model 12M9 features Endevco's Piezite type P-8
bimorph sensing element, operating in the bender mode,
which provides low base strain sensitivity, low pyroelectric
output, and extremely high charge output versus size.
Contact to the sensing element is made through the top
and bottom metalized surfaces. The unit is designed to
be mounted with conductive adhesives or solder on the
bottom surface and a solder or wire bond connection to
the top surface. Since the model 12M9 is a high impedance
piezoelectric device, extreme care must be exercised in
shielding it from stray electromagnetic noise.
TYPICAL AMPLITUDE RESPONSE
30
25
20
15
% DEVIATION
10
5
0
-5
-10
-15
-20
-25
1
10
100
FREQUENCY IN HERTZ
-30
10000
1000
TYPICAL TEMPERATURE RESPONSE
40
30
CAPACITANCE
% DEVIATION
20
10
CHARGE SENSITIVITY
0
-10
-20
-100
(-73)
0
(-18)
100
(38)
TEMPERATURE ϒ (ϒ
F C)
200
(93)
-30
300
(149)