Surface Mount Piezoresistive Silicon
Absolute Pressure Sensor
KP 202-A/AK
KP 203-A/AK
Preliminary
Features
High sensitivity and linearity
Fast response
Very small dimensions
Low cost
Produced in qualified semiconductor
fabrication lines
• SMD housing
• Built in silicon temperature sensor
•
•
•
•
•
P-DSOF-8-1
*)
*)
Type
KP 202-A
KP 202-AK
KP 203-A
KP 203-AK
Marking
Ordering Code
on request
Pressure Range
0 … 60 kPa (0.6 bar)
0 … 60 kPa (0.6 bar)
0 … 160 kPa (1.6 bar)
0 … 160 kPa (1.6 bar)
Package
P-DSOF-8-1
*)
P-DSOF-8-1
*)
KP 202-A Q62702-K0429
KP 203-A Q62702-K0431
on request
*)
This package is a future option for high volumes
Data Sheet
1
2000-07-01
KP 202-A/AK, KP 203-A/AK
Pin Configuration
1
2
3
4
5
6
7
8
Not connected
V
S
–
V
OUT
+
Not connected
Temperature Sensor, typ.
R
25
= 2 kΩ
V
S
+ and Temperature Sensor
V
OUT
–
Not connected
N.C.
_
1
2
3
4
8
7
6
5
N.C.
_
S
V
OUT
+
N.C.
V
S
and
Temp. Sensor
Temp. Sensor
V
out
+
N.C.
3
4
6
5
V
S
and
Temp. Sensor
Temp. Sensor
EHA07304
EHA07367
KP 20x-A
KP 20x-AK
Data Sheet
2
2000-07-01
+
_
V
S
V
OUT
+
N.C.
V
_
1
2
8
7
N.C.
V
out
KP 202-A/AK, KP 203-A/AK
Electric Network
Four piezoresistors form a bridge circuit, providing a very accurate and linear output
voltage, directly proportional to the applied pressure.
V
OUT
=
V
O
+
V
FIN
with
R
1
(
p
) ×
R
3
(
p
)
–
R
2
(
p
) ×
R
4
(
p
)
-
=
V
S
×
----------------------------------------------------------------------------------------
[
R
1
(
p
)
+
R
2
(
p
) ] × [
R
3
(
p
)
+
R
4
(
p
)
R
1
(
0
) ≅
R
2
(
0
) ≅
R
3
(
0
) ≅
R
4
(
0
) ≅
R
B
A temperature sensor chip
R
T
, that is built in the housing, can be used to compensate
the temperature drift of the pressure sensor.
6
+
R
1
V
S
_
2
R
4
R
T
R
2
R
3
_
7
V
out
+
3
5
EHA07305
Sensor Schematic
Piezoresistors
R
1
…
R
4
denote the pressure sensitive resistors connected as a
Wheatstone bridge.
R
T
is a KTY-series temperature dependent resistor with a positive
TC.
Data Sheet
3
2000-07-01
KP 202-A/AK, KP 203-A/AK
Absolute Maximum Ratings
Parameter
Supply voltage
Overpressure
1)
Burst Pressure
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
Operating temperature range
Storage temperature range
Mechanical shock survival
1)
Symbol
Limit Values
12
250
400
800
Unit
V
kPa
kPa
V
S MAX
p
MAX
p
BURST
T
OP
T
STG
– 40 … + 125
– 40 … + 125
2000
°C
°C
g
Overpressure is limited to
p
MAX
, due to absorption of gas into the protective gel covering the sensor at higher
pressures. Abrupt decrease of pressure from values higher than
p
MAX
to low pressures can cause in the gel to
rupture.
Electrical Characteristics
at
T
A
= 25
°C
and
V
S
= 5 V unless otherwise specified
Parameter
Pressure Range
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
Bridge Resistance
Sensitivity
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
Full Scale Span (
p
=
p
N
,
V
S
= 5 V)
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
Offset signal
p
=
p
0
Linearity error (best fit straight line)
p
=
p
0
…
p
N
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
Pressure Hysteresis
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
Symbol
Limit Values
min.
typ.
–
–
6
0.44
0.20
132
160
–
max.
kPa
0
0
60
160
8
0.74
0.30
mV
72
88
222
240
+ 25
mV
%
V
FIN
–
–
±
0.3
±
0.3
–
±
0.1
–
–
%
V
FIN
–
–
–
–
kΩ
mV/V
×
kPa
0.24
0.11
Unit
P
N
R
B
s
4
V
FIN
V
O
F
L
– 25
P
H
Data Sheet
4
2000-07-01
KP 202-A/AK, KP 203-A/AK
Temperature Characteristics
at
T
1
= 25
°C,
T
2
= 90
°C,
T
3
= 25
°C
and
V
S
= 5 V unless otherwise specified
Parameter
Temperature Coefficient of Span
1)
Temperature Coefficient of Offset
1)
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
Temperature Coefficient of Bridge
Resistance
2)
Temperature Hysteresis of Span
3)
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
Temperature Hysteresis of Offset
3)
KP 202-A, KP 202-AK
KP 203-A, KP 203-AK
1)
2)
3)
Symbol
Limit Values
min. typ.
max.
–
–
–
– 0.17 -
±
0.01 –
±
0.01 –
+ 0.26 -
Unit
% K
-1
% K
-1
TC
VFIN
TC
V0
TC
RB
TH
VFIN
–
% K
-1
% K
-1
–
–
±
0.4
±
0.3
±
0.3
±
0.3
–
–
%
V
FIN
-1
–
–
TH
V0
–
–
Change in value of TC
V
FIN
or TCV between 25
°C
and 125
°C
relative to
V
FIN
(25
°C)
Change in RB between 25
°C
and 125
°C
relative to RB (25
°C)
Change in
V
0
(25
°C)
or
V
FIN
(25
°C)
after temperature cycle 25
°C →
125
°C →
25
°C
relative to
V
FIN
(25
°C)
Data Sheet
5
2000-07-01
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
