±
DESCRIPTION
The ASDX Series is a Silicon Pressure Sensor offering either
an I2C or SPI digital interface for reading pressure over the
specified full scale pressure span and temperature range.
The ASDX is fully calibrated and temperature compensated for
sensor offset, sensitivity, temperature effects and non-linearity
using an on-board Application Specific Integrated Circuit
(ASIC). Calibrated output values for pressure are updated at
approximately 1 kHz.
The standard ASDX is calibrated over the temperature range
of 0 °C to 85 °C [32 °F to 185 °F]. The sensor is characterized
for operation from a single power supply of either 3.3 Vdc or
5.0 Vdc.
These sensors are available to measure absolute, differential
and gage pressures. The absolute versions have an internal
vacuum reference and an output value proportional to absolute
pressure. Differential versions allow application of pressure to
either side of the sensing diaphragm. Gage versions are
referenced to atmospheric pressure and provide an output
proportional to pressure variations from atmosphere.
The ASDX Series sensors are intended for use with non-
corrosive, non-ionic working fluids such as air and dry gases.
They are designed and manufactured according to standards
in ISO 9001.
FEATURES
Output options: I2C- or SPI-compatible 12-bit digital
Precision ASIC conditioning and temperature
compensated over 0 °C to 85 °C [32 °F to 185 °F]
temperature range
Low operating voltage
Absolute, differential and gage types
Pressure ranges from 10 inches H20 to 100 psi
Standard calibrations in inches H20, cm H20, psi, mbar,
bar, kPa
Total error band of ±2.0% of full scale span maximum
RoHS compliant
POTENTIAL APPLICATIONS
Flow calibrators
Ventilation and air flow monitors
Gas flow instrumentation
Sleep apnea monitoring and therapy equipment
Barometry
Pneumatic controls
HVAC
2 www.honeywell.com/sensing
Table 1. Absolute Maximum Ratings1
Parameter
Min
Max
Unit
Supply voltage (Vsupply)
6.0
Vdc
Voltage to any pin
Vsupply + 0.3
Vdc
Digital clock frequency:
I2C
SPI
400
800
kHz
ESD susceptibility (human body model)
-
kV
Storage temperature
125 [257]
°C [°F]
Lead temperature (2 s to 4 s)
250 [482]
°C [°F]
External capacitance between Vsupply and ground2
470
nF
Table 2. Operating Specifications
Parameter
Min.
Typ.
Max.
Unit
Supply voltage: (Vsupply)3
3.3 Vdc
5.0 Vdc
Sensors are either 3.3 Vdc or 5.0 Vdc per the Order Guide (see Figure 1).
3.0
4.75
3.34
5.04
3.6
5.25
Vdc
Supply current
2.0
3.5
5.0
mA
Compensated temperature range5
0 [32]
-
85 [185]
°C [°F]
Operating temperature range6
-20 [-4]
-
105 [221]
°C [°F]
Overpressure7
2X operating pressure range minimum
Burst pressure8
3X operating pressure range minimum
Startup time (power up to data ready)
-
2.8
7.3
ms
Response time
-
0.46
-
ms
I2C or SPI voltage level low
-
-
0.2
Vsupply
I2C or SPI voltage level high
0.8
-
-
Vsupply
Pull-up on SDA and SCL (I2C output only)
1
-
-
kOhm
Total error band9
-
-
2.0
%FSS10
Output resolution
12
-
-
bits
Table 3. Environmental Specifications
Parameter
Characteristic
Humidity
0% to 95% RH non-condensing
Vibration
10 G at 20 Hz to 2000 Hz
Shock
100 G for 11 ms
Life
1 million cycles minimum
Table 4. Wetted Materials11
Parameter
Port 1 (Pressure Port)12
Port 2 (Reference Port)12
Covers
glass-filled PBT
glass-filled PBT
Adhesives
silicone
silicone and epoxy
Electronic components
silicon and glass
silicon, glass, and gold
Notes:
1. Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device.
2. An external bypass capacitor is required across the supply voltage (Pins 6 and 3 – see Figure 4) as close to the sensor supply pin as possible
for correct sensor operation.
3. Ratiometricity of the sensor (the ability of the output to scale to the input voltage) is achieved within the specified operating voltage for each
option. Other custom supply voltages are available, please contact Honeywell Customer Service.
4. The sensor is not reverse polarity protected. Incorrect application of excitation voltage or ground to the wrong pin may cause electrical failure.
5. The compensated temperature range is the temperature range (or ranges) over which the sensor will produce an output proportional to
pressure within the specified performance limits.
6. The operating temperature range is the temperature range over which the sensor will produce an output proportional to pressure but may not
remain within the specified performance limits.
7. Overpressure is the maximum pressure which may safely be applied to the product for it to remain in specification once pressure is returned to
the operating pressure range. Exposure to higher pressures may cause permanent damage to the product.
8. Burst pressure is the maximum pressure that may be applied to any port of the product without causing escape of pressure media. Product
should not be expected to function after exposure to any pressure beyond the burst pressure.
9. Total error band is the maximum deviation in output from ideal transfer function over the entire compensated temperature and pressure range.
Includes all errors due to offset, full scale span, pressure non-linearity, pressure hysteresis, repeatability, thermal effect on offset, thermal effect
on span and thermal hysteresis. Specification units are in percent of full scale span (%FSS).
10. Full scale span (FSS) is the algebraic difference between the output signal measured at the maximum (Pmax.) and minimum (Pmin.) limits of
the pressure range.
11. Consult Honeywell Customer Service for detailed material information.
12. For AC pressure port configuration, the “pressure” and “reference” ports are reversed.
Honeywell Sensing and Control 3
Figure 1. Nomenclature and Order Guide
ASDX _ _ _ _ _ _ _ __
Power Supply Voltage
3 = 3.3 Vdc
5 = 5.0 Vdc
Package Selection13 Calibration Selection
Series
Gage
-
010NG = 10 in H2O
-
025CG = 25 cm H2O
001PG = 1 psi
005PG = 5 psi
015PG = 15 psi
030PG = 30 psi
100PG = 100 psi
-
025MG = 25 mbar
050MG = 50 mbar
100MG = 100 mbar
200MG = 200 mbar
500MG = 500 mbar
001BG = 1 bar
002BG = 2 bar
007BG = 7 bar
003KG = 3 kPa
004KG = 4 kPa
005KG = 5 kPa
010KG = 10 kPa
020KG = 20 kPa
050KG = 50 kPa
100KG = 100 kPa
200KG = 200 kPa
700KG = 700 kPa
Differential
005ND = ±5 in H2O
010ND = ±10 in H2O
015CD = ±15 cm H2O
025CD = ±25 cm H2O
001PD = ±1 psi
005PD = ±5 psi
015PD = ±15 psi
030PD = ±30 psi
-
015MD = ±15 mbar
025MD = ±25 mbar
050MD = ±50 mbar
100MD = ±100 mbar
200MD = ±200 mbar
500MD = ±500 mbar
001BD = ±1 bar
002BD = ±2 bar
-
003KD = ±3 kPa
004KD = ±4 kPa
005KD = ±5 kPa
010KD = ±10 kPa
020KD = ±20 kPa
050KD = ±50 kPa
100KD = ±100 kPa
200KD = ±200 kPa
-
Absolute
-
-
-
-
-
-
015PA = 15 psi
030PA = 30 psi
100PA = 100 psi
-
-
-
-
-
-
001BA = 1 bar
002BA = 2 bar
007BA = 7 bar
-
-
-
-
-
-
100KA = 100 kPa
200KA = 200 kPa
700KA = 700 kPa
Pressure Range16, 17, 18
Transfer Function Limits14
A = 10% to 90% calibration
B = 5% to 95% calibration
Output Type15
S = SPI
2 = I2C, Address 0x28
3 = I2C, Address 0x38
4 = I2C, Address 0x48
5 = I2C, Address 0x58
6 = I2C, Address 0x68
7 = I2C, Address 0x78
_
Pressure Port
AV = Axial port on top, vented cover on bottom
RR = Radial port on top, radial port on bottom
AC = Axial port, sealed cover (commonly used
for absolute)
RV = Radial port, single
Future Option
X
Notes:
13. Other package combinations are possible, please contact Honeywell Customer Service.
14. The transfer function limits define the output of the sensor at a given pressure input. By specifying the output signal at the maximum (Pmax.)
and minimum (Pmin.) limits of the pressure range, the complete transfer curve for the sensor is defined. See Figure 2 for a graphical
representation of each calibration. For the 12-bit digital output, Table 6 provides the output of the sensor at significant percentages. These
outputs are valid at the rated input voltage of the sensor.
15. The output type defines which communication protocol the sensor uses to communicate. Available protocols are I2C or half duplex SPI (sensor
acts only as a slave). This communication protocol is not field selectable, and must be defined when ordering the sensor.
16. Custom pressure ranges are available, please contact Honeywell Customer Service.
17. The pressure units (inches H20, cm H20, psi, mbar, bar, kPa) define the units used during calibration and in the application.
18. See Table 5 for an explanation of sensor types.
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Table 5. Sensor Types
Type
Description
Absolute
Output is proportional to difference between applied pressure and built-in reference to vacuum (zero pressure).
Gage
Output is proportional to difference between applied pressure and atmospheric (ambient) pressure.
Differential
Output is proportional to difference between pressure applied to each of the pressure ports (Port 1 – Port 2).
Figure 2. Transfer Functions and Limits
A Calibration, 10% to 90%
B Calibration, 5% to 95%
Table 6. Sensor Output at Significant Percentages
% Output
Digital Counts (dec)
Digital Counts (hex)
0%
0
0x0000
5%
819
0x0333
10%
1638
0x0666
50%
8192
0x2000
90%
14746
0x399A
95%
15565
0x3CCD
100%
16383
0x3FFF
Figure 3. Completed Catalog Listing Example
ASDXAVX001PG2A3:
AV pressure port, 1 psi gage, I2C output
(Address 0x28), 10% to 90% calibration
at 3.3 Vdc operation.
ASDXAVX001PG2A3 Output vs Pressure
Honeywell Sensing and Control 5
Figure 4. Dimensional Drawings (For reference only: mm [in].)
AV Package (Legacy G2)
RR Package (Legacy D4)
AC Package (Legacy A2)
RV Package
Table 7. Pinout
I2C
SPI
Pin
Definition
Type
Description
Pin
Definition
Type
Description
1
SDA
digital I/O
serial bidirectional data;
data is clocked in or out on
clock edge of SCL
1
MISO
digital output
“Master In Slave Out” - serial
output data; data is clocked
out on clock edge of SCK
2
SCL
digital input
serial clock input; used to
clock data on SDA
2
SCK
digital input
serial clock input; used to
clock data on MISO
3
GND
supply
power supply ground
3
GND
supply
power supply ground
4
N/C
not used
do not connect in the
application
4
N/C
not used
do not connect in the
application
5
SS
digital output
interrupt signal (conversion
complete output)
5
SS
digital input
slave select
6
Vsupply
supply
power supply source
6
Vsupply
supply
power supply source
7
N/C
not used
do not connect in the
application
7
N/C
not used
do not connect in the
application
8
N/C
not used
do not connect in the
application
8
N/C
not used
do not connect in the
application
Sensing and Control
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422
www.honeywell.com/sensing
008095-11-EN IL50 GLO Printed in USA
July 2010
Copyright © 2010 Honeywell International Inc. All rights reserved.
WARNING
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the
product could result in personal injury.
Failure to comply with these instructions could result
in death or serious injury.
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship. Honeywell’s
standard product warranty applies unless agreed to otherwise
by Honeywell in writing; please refer to your order
acknowledgement or consult your local sales office for specific
warranty details. If warranted goods are returned to Honeywell
during the period of coverage, Honeywell will repair or replace,
at its option, without charge those items it finds defective. The
foregoing is buyer’s sole remedy and is in lieu of all other
warranties, expressed or implied, including those of
merchantability and fitness for a particular purpose. In no
event shall Honeywell be liable for consequential, special,
or indirect damages.
While we provide application assistance personally, through
our literature and the Honeywell web site, it is up to the
customer to determine the suitability of the product in the
application.
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this
printing. However, we assume no responsibility for its use.
WARNING
MISUSE OF DOCUMENTATION
The information presented in this product sheet is for
reference only. Do not use this document as a product
installation guide.
Complete installation, operation, and maintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result in
death or serious injury.
SALES AND SERVICE
Honeywell serves its customers through a worldwide network
of sales offices, representatives and distributors. For
application assistance, current specifications, pricing or name
of the nearest Authorized Distributor, contact your local sales
office or:
E-mail: info.sc@honeywell.com
Internet: www.honeywell.com/sensing
Phone and Fax:
Asia Pacific +65 6355-2828; +65 6445-3033 Fax
Europe +44 (0) 1698 481481; +44 (0) 1698 481676 Fax
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