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PDF SCA620 Data sheet ( Hoja de datos )
| Número de pieza | SCA620 | |
| Descripción | Accelerometer | |
| Fabricantes | VTI technologies | |
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Hay una vista previa y un enlace de descarga de SCA620 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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SCA620 Series
Accelerometer
FEATURES
• Available ranges ±1.7 g
• 8-pin plastic surface mount DIP package mountable
with pick and place machines
• Enhanced failure detection
• Digitally activated electrostatic self test
• Calibration memory parity check
• Continuous connection failure detection
• Bi-directional acceleration measurement
• Controlled frequency response in the sensing element
• Re-flow solderable, process compatible
• Single +5 V supply; ratiometric voltage output in the
range 4.75 … 5.25 V
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
Condition
Min.
Supply voltage Vdd
Current consumption
Operating temperature
Resistive output load
Capacitive load
Output noise (1
Vdd = 5 V; No load
Vout to Vdd or Vss
Vout to Vdd or Vss
DC...80 kHz
4.75
- 40 +
20
Typ.
2.0
0.25
Max.
5.25
4.0
125
20
Units
V
mA
°C
kOhm
nF
mg
PERFORMANCE CHARACTERISTICS
Parameter
Condition/
Comment
SCA620-
CF8H1A
Measuring range (2
Nominal
Measuring direction (3
Zero point (nom.) (4
Mounting position
Sensitivity
@ room temperature
Zero point error (6
-40...125 °C
Zero point tempco (7
-25...85 °C
Sensitivity error
-40...125 °C
Sensitivity error (7
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-25...85 °C
Over measuring range
Cross-axis sensitivity (10
Frequency response
-3 dB point (11
Ratiometric error (12
Vdd = 4.75...5.25 V
VDD = 5.00 V, UNLESS OTHERWISE SPECIFIED
±1.7
Horizontal
Vdd/2
1.2 (5
±125
0.3±0.6
±4 (8
±3 (8
±40 (9
5
50±30
2
Units
g
V
V/g
mg
mg/°C
%
%
mg
%
Hz
%
Note 1
Note 2
Note 3
Note 4
Note 5a
Note 6
Note 7
Note 8
The noise density of CF8H1A is 20 µg/ Hz.
The measuring range is limited by sensitivity, offset and supply voltage rails of the device.
Measuring direction perpendicular to the mounting plane.
Vertical versions in +1 g position pins down, horizontal versions leg row 1-4 pointing downwards.
Sensitivity specified as [Vout (+1 g) - Vout(-1g)] / 2 [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.
Note 9
Note 10
Note 11
Note 12
Relative to straight line between ±1 g.
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.
The ratiometric error is specified as:
Vout(@Vx) x 5.00V
RE = 100% x 1-
Vx
Vout(@5V)
Rev. 26 Aug 2004
VTI Technologies reserves the right to modify this specification without prior to notice.
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