SCC Series
Pressure sensors
FEATURES
·
·
·
0...5 to 0...100 psi
Low cost sensor element
Internal temperature
compensation
Differential, gage and
absolute
GENERAL DESCRIPTION
The SCC series offer an extremely low
cost sensor element with a temperature
stable output when driven with a constant
current source. These integrated circuit
sensors were designed for extremely cost
sensitive applications where precise accu-
racy over a wide temperature range is not
required. This series is intended for use
with non-corrosive, non-ionic working fluids
such as air and dry gases.
Absolute devices have an internal vacuum
reference and an output voltage proportio-
nal to applied pressure. The differential de-
vices allow application of pressure to either
side of the diaphragm and the devices are
thereby available to measure both differen-
tial and/or gage pressures.
This product is packaged either in SenSym's
standard low cost chip carrier "button"
package, a plastic ported "N" package or a
dual inline package (DIP). All packages are
designed for applications where the
sensing element is to be integral to the OEM
equipment. These packages can be o-ring
·
APPLICATIONS
·
·
·
·
·
Pneumatic controls
Automotive diagnostics
Medical equipment
Dental equipment
Environmental controls
Scale:
1 cm
½ inch
sealed, epoxied, and/or clamped onto a
pressure fitting. A closed bridge
4-pin SIP configuration is provided for elec-
trical connection to the button package. The
DIP package offer a 5-pin open bridge
configuration.
EQUIVALENT CIRCUIT
Vs
ELECTRICAL CONNECTION
+
Output
GND
out +
+VS
out -
1
2
3
4
P1
-
Button Sensor or "N" Package
+Vs
P2
1
out +
GND
+Vs 4
out -
vent hole
out -
GND
out +
SCC..
button sensor
1
P1
4
+Vs
out +
GND
1
P1
P2
4
+Vs
Vs
+Vs
out -
+Vs
-
Output
SCCxxxGD2
DIP
SCCxxxAD2
DIP
SCCxxxD4
DIP
+
DIP Package
The polarity indicated is for pressure applied to
SCC.../SCC...N : P1 (forward gage)
SCC...GD2
: P2 (backward gage)
SCC...ASO/GSO : P1 (forward gage)
SCC...AD2
: P1 (forward gage)
SCC...DD4
: P2 (backward gage)
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SCC Series
Pressure sensors
PRESSURE SENSOR CHARACTERISTICS
Maximum ratings
(for all devices)
Supply current, I
S
Temperature ranges
Compensated
Operating
Storage
1.5 mA
0 to +50°C
-40 to +85°C
-55 to +125°C
Humidity
Lead temperature (soldering 4 sec.)
Common-mode pressure
0 to 100 %RH
250°C
150 psi
PERFORMANCE CHARACTERISTICS
(individual models) I
S
= 1.0 mA, T
A
= 25°C
1
Operating
pressure
range
0 - 5 psid(g)
0 - 15 psia
0 - 15 psid(g)
0 - 30 psia
0 - 30 psid(g)
0 - 100 psia
0 - 100 psid(g)
Part number
SCC05(D,G)
SCC15A
SCC15(D,G)
SCC30A
SCC30(D,G)
SCC100A
SCC100(D,G)
Proof
pressure
9
20 psi
30 psia
30 psi
60 psia
60 psi
150 psia
150 psi
Accuracy
2
0.50
0.50
0.50
0.50
0.50
0.50
0.50
%
%
%
%
%
%
%
Effect
on span
3
(0 - 50°C)
1.50
1.50
1.50
1.50
1.50
1.50
1.50
%
%
%
%
%
%
%
Effect
on offset
4
(0 - 50°C)
2.00
2.00
2.00
2.00
2.00
2.00
2.00
%
%
%
%
%
%
%
Full-scale
span
1,5
(mV)
25 - 65
30 - 95
40 - 95
60 - 150
60 - 150
85 - 225
85 - 225
PERFORMANCE CHARACTERISTICS
(all models) I
S
= 1.0 mA, T
A
= 25°C
Characteristics
Zero pressure offset
Combined linearity, hysteresis, repeatability
2
Temperature effect on span
3,8
Temperature effect on offset
4,8
Long term stability of offset and span
6
Response time (10 to 90 %)
7
Input impedance
Output impedance
Min.
-30.0
---
---
---
---
---
4.00
4.00
Typ.
-10
0.25
0.25
0.50
0.10
0.10
5.00
5.00
Max.
20.0
0.50
1.50
2.00
---
---
6.50
6.50
Unit
mV
%FSO
%FSO
%FSO
mV
ms
kΩ
kΩ
Specification notes:
1.
2.
Reference conditions: supply current = 1.0 mA, T
A
=25°C, common-mode line pressure = 0 psig, pressure applied to P1, unless
otherwise noted.
Accuracy is the sum of hysteresis and linearity. Hysteresis is the maximum output difference at any point within the operating
pressure range for increasing and decreasing pressure. Linearity refers to the best straight line fit as measured for the
offset, full-scale and 1/2 full-scale pressure at 25°C.
This is the maximum temperature shift for span when measured between 0 and 50°C relative to the 25°C reading.
Typical temperature coefficients for span and resistance are -2200 and +2200 ppm/°C respectively.
This is the maximum temperature shift for offset when measured between 0 and 50°C relative to the 25°C reading.
Span is the algebraic difference between the output voltage at full-scale pressure and the output at zero pressure.
Maximum difference in output at any pressure with the operating pressure range and temperature within 0 to 50°C after:
a) 100 temperature cycles, 0 to 50°C.
b) 1.0 million pressure cycles, 0 psi to full-scale span.
Response time for a 0 psi to full-scale span pressure step change. 10 to 90 % rise time.
Temp. effect on span and offset are guaranteed by design. Therefore these parameters are not 100 % tested.
If the proof pressure is exceeded, even momentarily, the package may leak or burst, or the pressure sensing die may fracture.
Note: The proof pressure for the forward gage of all devices in the D4-package is the specified value or 100 psi whatever is
less. The SCC100D (button package) can be used in forward gage mode only when the pressure doesn't exceed 30 psi,
or no special care ist taken.
3.
4.
5.
6.
7.
8.
9.
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SCC Series
Pressure sensors
PHYSICAL DIMENSIONS
Button package
mass:
1 g
dimensions in inches (mm)
Basic sensor DIP "D2" package
mass:
1 g
dimensions in inches (mm)
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SCC Series
Pressure sensors
PHYSICAL DIMENSIONS (cont.)
Basic sensor DIP "D4" package
0.550
(13.97)
P1
P2
0.050
typ.
(1.27)
0.470
(11.94)
0.135
(3.43)
0.250
(6.35)
0.090 typ.
(2.29)
0.300
(7.62)
0.285
(7.24)
0.380
(9.65)
0.070
(1.78)
0.600
(15.24)
0.01
(0.25)
0.110 typ.
(2.79)
0.020 typ.
(0.51)
0.100 typ.
(2.54)
mass:
1 g
dimensions in inches (mm)
N package
mass:
5 g
dimensions in inches (mm)
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SCC Series
Pressure sensors
ORDERING INFORMATION
Part number
Pressure range
Button
p ackag e
S C C 15A
S C C 30A
S C C 100A
" N " p ackag e
S C C 15A N
S C C 30A N
S C C 100A N
DIP package
single port
S C C 15A D 2
S C C 30A D 2
S C C 100A D 2
SCC05GD2
use
differential
devices
use
differential
devices
SCC15GD2
SCC30GD2
SCC100GD2
S C C 05D
S C C 15D
S C C 30D
S C C 100D
S C C 05D N
S C C 15D N
S C C 30D N
S C C 100D N
S C C 05D D 4
S C C 15D D 4
S C C 30D D 4
S C C 100D D 4
DIP package
dual port
0...15 psi
Absolute
pressure
0...30 psi
0...100 psi
0...5 psi
Gage
pressure
0...15 psi
0...30 psi
0...100 psi
0...5 psi
Differential
pressure
0...15 psi
0...30 psi
0...100 psi
SenSym and Sensortechnics reserve the right to make changes to any products herein. SenSym and Sensortechnics do not assume any
liability arising out of the application or use of any product or circuit described herein, neither does it convey any license under its patent
rights nor the rights of others.
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