Rev. 3 /30 Dec 2005

VTI Technologies reserves the right to modify this specification without prior to notice.

Vout(@Vx) x

5.00

V

Vx

1-

SCA610 Series

FEATURES

• 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

Accelerometer/Inclinometer

ELECTRICAL CHARACTERISTICS

Parameter

Condition

Min.

Typ.

Max.

Units

Supply voltage Vdd

4.75

5.25

V

Current consumption

Vdd = 5 V; No load

2.0

4.0

mA

Operating temperature

- 40

+ 125

°C

Resistive output load

Vout to Vdd or Vss

20

kOhm

Capacitive load

Vout to Vdd or Vss

20

nF

DC...4 kHz

5

mVrms

PERFORMANCE CHARACTERISTICS

Parameter

Condition/

Comment

SCA610-

SCA610-

SCA610-

C21H1A

SCA610-

C23H1A

SCA610-

C28H1A

SCA610-

C13H1A

SCA610-

CC5H1A

Units

Nominal

g

Measuring Direction

Horizontal

Horizontal

Horizontal

Horizontal

Horizontal

Horizontal

Horizontal

Mounting position

Vdd/2

Vdd/2

Vdd/2

Vdd/2

Vdd/2

Vdd/2

Vdd/2

V

Sensitivity

@ room temperature

V/g

-40..125 °C

mg

Sensitivity error

-40..125 °C

%

-25...85 °C

%

Over measuring range

mg

55

4

4

4

4

4

%

Frequency response

18

18

50

50

50

400

115

Hz

Vdd = 4.75...5.25 V

2

2

2

2

2

2

2

%

VDD = 5.00 V, UNLESS OTHERWISE SPECIFIED

Note 1

The noise density of CAHH1G and CA1H1G is 30 µg/ Hz, the noise density of C23H1A and C28H1A

is 20 µg/ Hz.

Note 2

The measuring range is limited by sensitivity, offset and supply voltage rails of the device.

Note 3

Measuring direction parallel to the mounting plane.

Note 4

Vertical versions in +1 g position, i.e. arrow up: horizontal versions pins down (+0 g)

Note 5a

Sensitivity specified as [Vout (+1 g) - Vout(-1 g)] / 2 [V/g] .

Note 5b

Sensitivity specified as [Vout (+0.5 g) - Vout(-0.5 g)][V/g] .

Note 6

Zero point error specified as (Vout (+0 g) - Vdd/2) / Vsens [g] (room temp. error included);

Vsens = Nominal sensitivity.

Note 7

Typical tolerance, not 100 % tested.

Note 8a

Sensitivity error specified as {{[Vout (+1 g) -Vout (-1 g)] / 2} -Vsens} / Vsens x 100 % [%] (room

temp. error included); Vsens = Nominal sensitivity.

Note 8b

Sensitivity error specified as {{[Vout (+0.5 g) -Vout (-0.5 g)] / 2} -Vsens} / Vsens x 100 % [%]

(room temp. error included); Vsens = Nominal sensitivity.

Note 9a

Relative to straight line between

Note 9b

Relative to straight line between

Note 9c

In inclinometer applications a correction based on the angular error resulting from cross-axis

sensitivity around the inclination angle reduces non-linearity.

Note 10

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 11

The output has true DC (0 Hz) response.

Note 12

Supply voltage noise also couples to the output, due to the ratiometric (output proportional

to supply voltage) nature of the accelerometer.

Note 13

Self test not recommended.

The ratiometric error is specified as: