SCA320 Series
Accelerometer Chip
FEATURES
BENEFITS
• Available ranges ±1.5g, ±3g, ±12g
• 8-Pin surface mount plastic DIP package
suitable for pick and place machines
• Enhanced failure detection
• Excellent overload and shock durability
• Stability over temperature and time
• No additional components required
• Digitally activated electrostatic self test
• Calibration memory parity check
• Continuous connection failure detection
• Controlled frequency response in the sensing
element
APPLICATIONS
• Acceleration measurement
• Inclination measurement
• Vibration measurement
• Motion measurement
• Bi-directional acceleration measurement
• Re-flow solder, process compatible
• Single +5V supply; ratiometric voltage output
in the range 4.75 … 5.25V
For customised products please contact
VTI HAMLIN
• Measuring direction perpendicular to the
assembly plane
DIMENSIONS
The accelerometer weighs under 1.5g. The size of the part is approximately (w x h x l) 12,7 x 6,4 x 12,7 mm. Pin pitch is standard 100 mils.
12.70
5
6
7
8
4
3
2
1
ACCELERATION
DIRECTION
CONNECTION
1, 2, 3, 5 Open or capacitively connected to GND for EMC
(2 (C1) may be used for frequency setting in a different mode)
4 Ground (GND)
12.00
6 Self test triggering (ST)
7 Analog output voltage (Vout)
8 Supply voltage (Vdd)
VTI PART
Acceleration in the positive direction of the arrow perpendicular to the mounting
plane will increase the output voltage.
PCB PAD LAYOUTS
PRODUCT CODE KEY
PART NUMBER
X
X
X
X
X
X
1.39
2.54±0.05
RO. 1 TYP
ASIC TYPE
C=HML294
SENSITIVITY
1=2000 mV/g
2=1500 mV/g
3=1333 mV/g
4=1000 mV/g
5=750 mV/g
8=1200mV/g
C=150mV/g
D=1575mV/g
E=1666mV/g
F=1471.5mV/g
G=1875mV/g
J=400mV/g
MECHANICAL FEATURE
G= SMD Pins
FREQUENCY RESPONSE
1= 400Hz
2= 1kHz
3= Wide Band
4= External Capacitor
SENSING ELEMENT
1= Small 1g; G001BA (XC)
2= Small 1g; 50Hz; G001BB
3= Small 3g; G003BA (XE)
B= Inclinometer 0.5g; G001BC (XB)
C=Small 3g; G003BC; 115Hz
D=Small 12g, G012XX (XX)
OFFSET
H= Output @ 0g = 2.500V
V= Output @ +1g = 2.500V
Standard versions in bold
VTI Hamlin Oy, P.O. Box 27, FIN-01621 Vantaa, Finland
Phone +358 9 879 181, Fax +358 9 8791 8791, www.vti.fi/vtihome.htm