SCA320 Series
ABSOLUTE MAXIMUM RATINGS
Parameter
Value
Units
Acceleration (powered or non-powered)
Supply voltage
Voltage at input / output pins
Temperature range
20000
g
V
V
-0.3 to +7.0
-0.3 to Vdd + 0.3
-55 to +125
°C
ELECTRICAL CHARACTERISTICS
Parameter
Condition
Min.
Typ
Max.
Units
Supply voltage Vdd
Current consumption
Operating temperature
Resistive output load
Capacitive load
4.75
5.25
4.0
+ 125
V
mA
°C
kOhm
nF
mVrms
Vdd = 5V; No load
2.0
- 40
20
Vout to Vdd or Vss
Vout to Vdd or Vss
DC...4kHz
20
5
Output noise (9
1
VDD = 5.00V, UNLESS OTHERWISE SPECIFIED
PERFORMANCE CHARACTERISTICS
Parameter
Condition
SCA320-
C28H1G
SCA320-
CC5V1G
SCA320-
CDCV1G
Units
Measuring range (1
Mounting plane (2
Zero Point (2
Nominal
±1.5
Vertical
Vdd/2
1.2
±50(4a
±80(4a
±120(4a
±2
±3
Horizontal
Vdd/2
0.75
±75(4b
±130(4b
±195(4b
±2
±12
Horizontal
Vdd/2
0.15
±450(4b
±700(4b
±1000(4b
±3
g
V
Sensitivity (3
@ room temperature
@ room temperature
-20...85°C
-40...125°C
@ room temperature
-20...85°C
V/g
mg
mg
mg
%
Zero Point error (4
Sensitivity error (4,5
±3
±3
±4
%
-40...125°C
Over measuring range
±4
±20
4
50±30
±2
±4
±60
4
115±55
±2
±5
±200
5
400±150
±2
%
mg
%
Hz
%
Typical non-linearity (6
Cross-axis sensitivity (7
Frequency response
Ratiometric error (9
-3dB point (8
Vdd = 4.75...5.25V
VDD = 5.00V, UNLESS OTHERWISE SPECIFIED
Note 1. The measuring range is limited by sensitivity, offset and supply voltage rails of the device.
Note 2. The measuring direction is perpendicular to the mounting plane; zero point is defined with no acceleration and the device mounted in the prescribed mounting plane; for a
vertical mounting plane the zero point is defined with pins 1 and 8 low.
Note 3. Sensitivity specified as [Vout (+1g) - Vout(-1g)] / 2 [V/g].
Note 4. Room temperature and –20 … +85°C values are only typical.
Note 4a. Zero point error specified as (Vout (+0g) - Vdd/2) / Vsens [g] (room temp. error included); Vsens = Nominal sensitivity.
Note 4b. Zero point error specified as (Vout (+1g) - Vdd/2) / Vsens [g] (room temp. error included); Vsens = Nominal sensitivity.
Note 5. Sensitivity error specified as {{[Vout (+1g) -Vout (-1g)] / 2} -Vsens} / Vsens x 100% [%]; Vsens = Nominal sensitivity.
Note 6. Relative to the straight line between ±1g.
Note 7. 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.
Note 8. The output has true DC (0Hz) response.
Note 9. Supply voltage noise also couples to the output, due to the ratiometric (output proportional to supply voltage) nature of the accelerometer.
5.00V
Vout(@Vx) x
Vx
The ratiometric error is specified as:
RE = 100% x 1 -
Vout(@5V)
Rev. 2 January 2001
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
VTI Hamlin reserves the right to modify this specification without prior notice.