ASDX Series
Signal conditioned pressure transducers
FEATURES
· 0...1 to 0...100 psi,
0...±1 to 0...±100 psi
· Absolute, gage or
differential pressure
· 0.5...4.5 V ratiometric output
· Precision ASIC conditioning
· Temperature compensated
GENERAL DESCRIPTION
The amplified ASDX offers a high level
(4.0 V span) output on a very cost-
effective basis. This family is fully
calibrated
and
temperature
compensated using an on-board
ASIC. These sensors are intended for
use with non-corrosive, non-ionic
working fluids such as air and dry
gases.
Devices are available to measure
absolute, differential, and gage
pressures from 1 to 100 psi. The
absolute devices have an internal
vacuum reference and an output
voltage proportional to absolute
pressure. Differential devices allow
application of pressure to either side
of the sensing diaphragm and can be
used for gage or differential
measurements.
APPLICATIONS
· Medical instrumentation
· Barometry
· HVAC controls
· Pneumatic controls
All ASDX devices are accurate to
within ±2.0 %FSS. The devices are
characterized for operation from a
single 5 V supply. The sensor is
designed
and
manufactured
according to standards laid down in
ISO 9001.
ELECTRICAL CONNECTION
N/C
5 6 7
1
+Vs
Note:
Capacitor 220 nF required
between +Vs and GND and
15 nF between Vout and GND.
It is important to place the
capacitors as close to the pins
as possible!
Pins 4, 5, 6, 7 and 8 are internal
device connections and should
not be connected for any reason!
ASDX
2
Vout
15 nF
220 nF
3
8 4
GND
N/C
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ASDX Series
Signal conditioned pressure transducers
PRESSURE SENSOR CHARACTERISTICS
Maximum ratings
Supply voltage V
S
Output current
Sink
Source
Lead temperature (2 - 4 sec.)
4.75 V to 5.25 V
DC
max. 6.50 V
DC
2 mA
2 mA
250 °C
Environmental specifications
Temperature ranges
Compensated
Operating
Storage
Vibration:
Shock:
0 to +85 °C
-20 to +105 °C
-40 to +125 °C
10 g at 20 - 2000 Hz
100 g for 11 ms
Caution!
The sensor is not reverse polarity protected.
Incorrect applications of excitation voltage or ground to the wrong pin can cause electrical failure.
Application of supply voltage above the maximum can cause electrical failure.
PRESSURE RANGES SPECIFICATIONS
(V
S
= 5.0 V
DC
, T
A
= 25°C)
Part number
A S D X 015A 24R
A S D X 030A 24R
A S D X 100A 24R
ASDX001G24R / D44R
ASDX005G24R / D44R
ASDX015G24R / D44R
ASDX030G24R / D44R
ASDX100G24R / D44R
A S D X 001D 44D
A S D X 005D 44D
A S D X 015D 44D
A S D X 030D 44D
A S D X 100D 44D
Pressure range
0 to 15
0 to 30
0 to 100
0 to 1
0 to 5
0 to 15
0 to 30
0 to 100
psi(g,d)
0 to ±1
0 to ±5
0 to ±15
0 to ±30
0 to ±100
psi(a)
Burst pressure
1
30
60
150
5
20
30
60
150
psi(g,d)
5
20
30
60
150
psi(a)
Sensitivity (typ.)
0.267
0.133
0.040
4.00
0.80
0.267
0.133
0.040
2.00
0.40
0.133
0.067
0.020
V/psi
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ASDX Series
Signal conditioned pressure transducers
PERFORMANCE CHARACTERISTICS
0.5 to 4.5 V ratiometric output
(V
S
= 5.0 V
DC
, T
A
= 25°C)
All ASDX...A24R, ...G24R, ...D44R
Characteristics
Zero pressure offset
Full scale span (FSS)
2
Full scale output
Total accuracy (0 to 85°C)
3
Sample rate
Response delay
4
Quantization step
5
Current consumption
Min.
0.42
Typ.
0.50
4.00
Max.
0.58
Units
V
4.58
±2.0
%FSS
Hz
14.11
ms
mV
mA
4.42
4.50
100
2.73
3
6
All ASDX...D44D
Characteristics
Zero pressure offset
Full scale span (FSS)
2
Output
at max. specified pressure
at min. specified pressure
Total accuracy (0 to 85°C)
3
Sample rate
Response delay
4
Quantization step
5
Current consumption
Min.
2.42
Typ.
2.50
4.00
Max.
2.58
Units
V
4.42
0.42
4.50
0.50
4.58
0.58
±2.0
100
2.73
3
6
14.11
%FSS
Hz
ms
mV
mA
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ASDX Series
Signal conditioned pressure transducers
TOTAL ACCURACY (-20 to +105°C)
Total accuracy (%FSS)
3.0
2.0
1.0
0
-1.0
-2.0
-3.0
-20
0
20
40
60
85
105
Temperature (°C)
Specification notes:
1. If maximum burst pressure is exceeded, even momentarily, the package may leak or burst, or the pressure sensing
die may fracture.
2. Full Scale Span (FSS) is the algebraic difference between the output signal for the highest and lowest specified
pressure. Span is ratiometric to the supply voltage.
3. Total accuracy is the combined error from offset and span calibration, linearity, pressure hysteresis, and temperature
effects. Linearity is the measured deviation based on a straight line.
Hysteresis is the maximum output difference at any point within the operating pressure range for increasing and
decreasing pressure. Calibration errors include the deviation of offset and full scale from nominal values.
4. Delay time between sampling and signal change at the output.
5. The smallest change in the output voltage, given any change in pressure.
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Test/Measurement
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