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SCA610 Series
Accelerometer/Inclinometer
FEATURES * Available ranges 0.5 g (30 ), 1 g (90 ), 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- SCA610CAHH1G (13 CA1H1G (13 0.5 (30 )
Horizontal Vdd/2 4 (5b
SCA610C21H1A 1
Horizontal Vdd/2 2 (5a
SCA610C23H1A 1.5
Horizontal Vdd/2 1.333 (5a
SCA610C28H1A 1.7
Horizontal Vdd/2 1.2 (5a
SCA610C13H1A 1 .5 Horizontal
Vdd/2 1.33 (5a
SCA610CC5H1A 3
Horizontal Vdd/2 0.75 (5a
Units
g V V/g mg % % mg % Hz %
1 (90 )
Horizontal Vdd/2 2 (5a
50 4 (8b 2.5 (8b 10 (9b, c
5 1810 2
50 4 (8a 2.5 (8a 10(9a, c
5 1810 2
125 5 (8a 3 (8a 20(9a
4 5030 2
125 5 (8a 3 (8a 20 (9a
4 5030 2
125 5 (8a 3 (8a 20(9a
4 5030 2
125 5 (8a 3 (8a 20(9a
4 400150 2
195 5 (8a 3 (8a 60(9a
4 11555 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 g/ Hz, the noise density of C23H1A and C28H1A is 20 g/ 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:
RE = 100% x 1-
Vout(@Vx) x 5.00V Vx Vout(@5V)
Rev. 3 /30 Dec 2005
VTI Technologies reserves the right to modify this specification without prior to notice.
SCA610 Series
ABSOLUTE MAXIMUM RATINGS
Parameter
Acceleration (powered or non-powered) Supply voltage Voltage at input / output pins Temperature range
Value
20000 -0.3 to +7.0 -0.3 to Vdd + 0.3 -55 to +125
Units
g V V C
ELECTRICAL CONNECTION
RECOMMENDED CIRCUIT
Pin#
1 2 3 4 5 6 7 8
Pin Name Connection
Open or capacitively connected to GND for EMC*) Open or capacitively connected to GND for EMC*) Open or capacitively connected to GND for EMC*) GND ST VOUT VDD Negative supply voltage (VSS) Open or capacitively connected to GND for EMC*) Self-test control Sensor analog output Positive supply voltage (VDD)
*) recommended capacity min. 20 pF - Effectiveness should be tested and if necessary adapted in the respective connection.
DIMENSIONS
The accelerometer weighs under 1 g. The size of the part is approximately (w x h x l) 9 x 5 x 11 mm. Pin pitch is standard 100 mils.
PCB PAD LAYOUTS
Acceleration in the direction of the arrow will increase the output voltage.
VTI Technologies Oy Myllynkivenkuja 6 P.O. Box 27 FI-01621 Vantaa Finland Tel. +358 9 879 181 Fax +358 9 879 18791 sales@vti.fi
VTI Technologies Oy Frankfurt Branch Rennbahnstr. 72-74 D-60528 Frankfurt am Main Germany Tel. +49 69 6786 880 Fax +49 69 6786 8829 sales.de@vti.fi
VTI Technologies, Inc. One Park Lane Blvd. Suite 804 - East Tower Dearborn, MI 48126 USA Tel. +1 313 425 0850 Fax +1 313 425 0860 sales@vtitechnologies.com

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