Pressure sensors
Gauge pressure transducers
Series/Type:
Ordering code:
Date:
Version:
AK2 series
2009-08-03
3
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Identification/Classification 2
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Ordering code: (top right header bar)
Series/Type: (top right header bar)
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Version:
AS SEN PD
2009-08-03
3
AK2 series
Pressure sensors
Gauge pressure transducers
EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited
Pressure sensors
Gauge pressure transducers
AK2 series
Description
The transducers are based on piezoresistive silicon pressure sensors
from our own clean room.
The robust stainless steel/plastic casing is accentuated
through its excellent mechanical decoupling.
Features
Piezoresistive MEMS technology
Measured media:
Air, non-aggressive gases (gas humidity 0 ... 100% r.h.)
and non-aggressive fluids.
Unsuitable for substances which react with glass, silicon, stainless
steel, silicone glue (p
r
≤
10 bar) or epoxy glue (p
r
> 10 bar).
Whetstone bridge with mV output, proportional to pressure
and ratiometric to supply voltage
RoHS-compatible, halogen-free
Dual-in-line package for PCB mounting
Dimensional drawings
Type KD (4.8 mm tube fitting)
Type KC (M5 thread connection)
All dimensions in mm
AS SEN PD
Please read Cautions and warnings and
Important notes at the end of this document.
Page 2 of 7
2009-08-03
Pressure sensors
Gauge pressure transducers
AK2 series
Technical data
Absolute maximum ratings
Parameter
Temperature ranges
Storage temperature range
Operating temperature range
Soldering temperature
Supply voltage /-current
Supply voltage
Parameter
V
DD
Symbol
5)
Symbol
Conditions
Min.
Typ.
Max.
Unit
T
st
T
a
T
solder
1)
2)
–40
–30
+125
+85
+240
°
C
°
C
°
C
<5 s
(no reflow soldering)
10
Min.
Typ.
Max.
V
Unit
Conditions
Offset / bridge resistance @ T
a
= 25 ° V
DD
= 5 V
C,
Bridge resistance
R
S
Chip type C41 (pin1-3)
Chip type C27 (pin1-3)
Chip type C28 (pin1-3)
Offset
V
0
6)
4.0
2.6
2.7
–25
5.0
3.3
3.2
0
6.0
4.0
3.7
+25
kΩ
kΩ
kΩ
mV
Data in temperature range @ T
a
= –30 ... 85 ° V
DD
= 5 V
C,
Temperature hysteresis
Temperature coefficients of the
bridge resistance
Temperature coefficients of the
sensitivity
Temperature coefficient of offset
α
Rs
β
Rs
α
S
β
S
TCV
0
12)
11)
9)
10)
±0.1
2.1
4
–2.4
3
2.4
6
–2.2
5
±4
±0.5
2.7
8
–2.0
8
% FS
10 /K
10 /K
10 /K
10 /K
-6
2
-3
-6
2
-3
µV/VK
Data dependent on rated pressure
@ T
a
= 25 °C, V
DD
= 5 V
Rated pressure p
r
bar
0.025
0.060
0.100
0.250
0.400
1.000
2.500
6.000
10.00
25.00
C41
C41
C27
C27
C27
C27
C28
C28
C28
C28
3)
Chip type
Min.
mV/bar
640
450
350
300
225
90
36
15
9
3.6
Sensitivity S
Typ.
mV/bar
1000
700
500
400
300
120
48
20
12
4.8
7)
Nonlinearity L
Typ.
% FS
±1
±0.75
±0.5
±0.5
±0.5
±0.25
±0.25
±0.25
±0.25
±0.25
Max.
% FS
±1.75
±1.5
±1
±1
±1
±0.5
±0.5
±0.5
±0.5
±0.5
8)
Overpressure p
ov
Min.
bar
0.25
0.35
0.5
0.6
1
3
5
9
24
37.5
4)
Max.
mV/bar
1280
833
700
480
375
150
60
25
15
6
AS SEN PD
Please read Cautions and warnings and
Important notes at the end of this document.
Page 3 of 7
2009-08-03
Type
AS SEN PD
Product type
Ordering code
1 VDD+
2 Vout+
4 Vout–
3 VDD–
Terminal assignment
Rated pressure p
r
bar
Please read Cautions and warnings and
Important notes at the end of this document.
AKR 0.025 D20
AKR 0.060 D20
AKR 0.100 D40
AKR 0.250 D40
AKR 0.400 D40
AKR 1.000 D40
AKR 2.500 D80
AKR 6.000 D80
AKR 10.00 D80
AKR 25.00 D80
AKR 0.025 C20
AKR 0.060 C20
AKR 0.100 C40
AKR 0.250 C40
AKR 0.400 C40
AKR 1.000 C40
AKR 2.500 C80
AKR 6.000 C80
AKR 10.00 C80
AKR 25.00 C80
0.250
0.400
1.000
2.500
6.000
10.00
25.00
0.100
0.060
0.025
25.00
10.00
6.000
2.500
1.000
0.400
0.250
0.100
0.060
0.025
Other rated pressures upon request.
B58611K1100A001
B58611K1100A002
Pressure sensors
Gauge pressure transducers
B58611K1100A003
Rated pressures and ordering codes
B58611K1100A004
Pin
4
3
2
1
B58611K1100A005
Type KD
B58611K1100A006
Symbol
B58611K1100A007
V
out+
V
DD+
V
DD–
V
out–
The polarity of V
out
applies to positive pressure.
Negative pressure or a reversed supply voltage
results in a reversed polarity of the output voltage V
out
.
Page 4 of 7
Type KC
B58611K1100A008
B58611K1100A009
B58611K1100A010
Supply voltage
Output voltage
Output voltage
Supply voltage
B58611K1500A007
B58611K1500A008
Terminal assignment
B58611K1500A009
B58611K1500A010
B58611K1500A011
B58611K1500A012
B58611K1500A013
B58611K1500A014
B58611K1500A015
AK2 series
2009-08-03
B58611K1500A016
Pressure sensors
Gauge pressure transducers
AK2 series
Symbols and terms
1)
2)
3)
4)
5)
6)
7)
8)
Storage temperature range T
st
A storage of the pressure sensor within the temperature range T
st,min
up to T
st,max
and without applied pressure and supply voltage will not affect the performance of the pressure sensor.
Operating temperature range T
a
An operation of the pressure sensor within the temperature range T
a,min
up to T
a,max
will not affect the performance of the pressure sensor.
Rated pressure p
r
Within the rated pressure range 0 up to p
r
the signal output characteristic corresponds to this specification.
Overpressure p
OV
Pressure cycles within the pressure range 0 up to p
ov
will not affect the performance of the pressure sensor.
Supply voltage V
DD
V
DD,max
is the maximum permissible supply voltage, which can be applied without damages.
The output voltage V
out
is ratiometric (V
out
~ V
DD
).
Offset V
0
The offset V
0
is the signal output V
out
(p = 0) at zero pressure.
Sensitivity S
Within the pressure range 0 up to p
r
the output voltage is V
out
(p
x
) = V
0
+ S · p
x
Nonlinearity L (including pressure hysteresis)
The nonlinearity is the deviation of the real sensor characteristic V
out
= f(p) from the ideal straight line.
It can be approximated by a polynomial of second order, with the maximum at p
x
= p
r
/ 2 .
The equation to calculate the nonlinearity is:
L
=
9)
V
out
(p
x
)
−
V
0
p
x
−
V
out
(p
r
)
−
V
0
p
r
Temperature hysteresis
The temperature hysteresis is the change of offset, starting from the value at 25 ° after a temperature change
C
and return to 25 ° Determined during temperature cycles in operating temperature range (cycles with 1 K/min).
C.
(Full Scale): FS = V
FS
= S · p
r
Temperature coefficients of the bridge resistance
α
RS
,
β
RS
2
Bridge resistance at temperature T
x
: R
S
(T
x
) = R
S
(25 ° · [ 1 +
α
RS
· (T
x
– 25 ° +
β
RS
· (T
x
– 25 ° ]
C)
C)
C)
Values are valid within the operating temperature range T
a,min
up to T
a,max
Out of the operating temperature range, the deviation may increase.
Temperature coefficients of the sensitivity
α
S
,
β
S
2
Sensitivity at temperature T
x
: S(T
x
) = S(25 ° · [ 1 +
α
S
· (T
x
– 25 ° +
β
S
· (T
x
– 25 °
C)
C)
C) ]
Values are valid within the operating temperature range T
a,min
up to T
a,max
Out of the operating temperature range, the deviation may increase.
Temperature coefficient of offset TCV
0
Offset at temperature T
x
: V
0
(T
x
) = V
0
(25 ° + TCV
0
· (T
x
– 25 ° · V
DD
C)
C)
Values are valid within the operating temperature range T
a,min
up to T
a,max
Out of the operating temperature range, the deviation may increase.
10)
11)
12)
AS SEN PD
Please read Cautions and warnings and
Important notes at the end of this document.
Page 5 of 7
2009-08-03
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