SCA610 Series
Accelerometer/Inclinometer
FEATURES
• Available ranges
±
0.5 g (
±
30 º),
±
1 g (
±
90 º),
±
1.5 g,
±
1.7 g,
±
3.0 g
• 8-pin plastic surface mount DIP package mountable with pick
and place machines
• Enhanced failure detection
• Digitally activated electrostatic self test (not for inclinometers)
• Calibration memory parity check
• Continuous connection failure detection
• Bi-directional acceleration measurement
• Controlled frequency response in the sensing element
• Single +5 V supply; ratiometric voltage output in the range
4.75 … 5.25 V
• Lead-free reflow solderable lead-free component
BENEFITS
• Exceptional reliability, unprecedented accuracy
and excellent stability over temperature and time
• Outstanding overload and shock durability
• No additional components required
APPLICATIONS
• Acceleration measurement
• Inclination measurement
• Motion measurement
• Vibration measurement
For customised product please contact
VTI Technologies
ELECTRICAL CHARACTERISTICS
Parameter
Supply voltage Vdd
Current consumption
Operating temperature
Resistive output load
Capacitive load
Output noise
(1
Vout to Vdd or Vss
Vout to Vdd or Vss
DC...4 kHz
Vdd = 5 V; No load
- 40
20
20
5
Condition
Min.
4.75
Typ.
2.0
Max.
5.25
4.0
+ 125
Units
V
mA
°C
kOhm
nF
mVrms
PERFORMANCE CHARACTERISTICS
Parameter
Measuring range
(2
Mounting plane
(3
Zero point (nom.)
(4
Sensitivity
Zero Point error
(6
Sensitivity error
Sensitivity error
(7
Typical non-linearity
(7
Cross-axis sensitivity
(10
Frequency response
Ratiometric error
(12
-3dB point
(11
Vdd = 4.75...5.25 V
Condition/
Comment
Nominal
Measuring Direction
Mounting position
@ room temperature
-40..125 °C
-40..125 °C
-25...85 °C
Over measuring range
SCA610- SCA610-
CAHH1G
(13
CA1H1G
(13
±
0.5 (
±
30 º)
Horizontal
Vdd/2
4
(5b
SCA610-
C21H1A
±
1
Horizontal
Vdd/2
2
(5a
SCA610-
C23H1A
±
1.5
Horizontal
Vdd/2
1.333
(5a
SCA610-
C28H1A
±
1.7
Horizontal
Vdd/2
1.2
(5a
SCA610-
C13H1A
±
1 .5
Horizontal
Vdd/2
1.33
(5a
SCA610-
CC5H1A
±
3
Horizontal
Vdd/2
0.75
(5a
Units
g
V
V/g
mg
%
%
mg
%
Hz
%
±
1 (
±
90 º)
Horizontal
Vdd/2
2
(5a
±
50
±
4
(8b
±
2.5
(8b
±
10
(9b, c
5
18
±
10
2
±
50
±
4
(8a
±
2.5
(8a
±
10
(9a, c
5
18
±
10
2
±
125
±
5
(8a
±
3
(8a
±
20
(9a
4
50
±
30
2
±
125
±
5
(8a
±
3
(8a
±
20
(9a
4
50
±
30
2
±
125
±
5
(8a
±
3
(8a
±
20
(9a
4
50
±
30
2
±
125
±
5
(8a
±
3
(8a
±
20
(9a
4
400
±
150
2
±
195
±
5
(8a
±
3
(8a
±
60
(9a
4
115
±
55
2
VDD = 5.00 V, UNLESS OTHERWISE SPECIFIED
Note 1
Note 2
Note 3
Note 4
Note 5a
Note 5b
Note 6
Note 7
Note 8a
Note 8b
Note 9a
The noise density of CAHH1G and CA1H1G is 30
µg/ Hz,
the noise density of C23H1A and C28H1A
is 20
µg/ Hz.
The measuring range is limited by sensitivity, offset and supply voltage rails of the device.
Measuring direction parallel to the mounting plane.
Vertical versions in +1 g position, i.e. arrow up: horizontal versions pins down (+0 g)
Sensitivity specified as [Vout (+1 g) - Vout(-1 g)] / 2 [V/g] .
Sensitivity specified as [Vout (+0.5 g) - Vout(-0.5 g)][V/g] .
Zero point error specified as (Vout (+0 g) - Vdd/2) / Vsens [g] (room temp. error included);
Vsens = Nominal sensitivity.
Typical tolerance, not 100 % tested.
Sensitivity error specified as {{[Vout (+1 g) -Vout (-1 g)] / 2} -Vsens} / Vsens x 100 % [%] (room
temp. error included); Vsens = Nominal sensitivity.
Sensitivity error specified as {{[Vout (+0.5 g) -Vout (-0.5 g)] / 2} -Vsens} / Vsens x 100 % [%]
(room temp. error included); Vsens = Nominal sensitivity.
Relative to straight line between
±
1 g.
Note 9b
Note 9c
Note 10
Note 11
Note 12
Note 13
Relative to straight line between
±
0.5 g.
In inclinometer applications a correction based on the angular error resulting from cross-axis
sensitivity around the inclination angle reduces non-linearity.
The cross-axis sensitivity determines how much acceleration, perpendicular to the measuring
axis, couples to the output. The total cross-axis sensitivity is the geometric sum of the
sensitivities of the two axes, which are perpendicular to the measuring axis.
The output has true DC (0 Hz) response.
Supply voltage noise also couples to the output, due to the ratiometric (output proportional
to supply voltage) nature of the accelerometer.
Self test not recommended.
The ratiometric error is specified as:
Vout(@Vx) x
5.00
V
Vx
RE =
100%
x
1-
Vout(@
5
V)
Rev. 3 /30 Dec 2005
VTI Technologies reserves the right to modify this specification without prior to notice.
VTI [ VTI TECHNOLOGIES ]
