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ASDX Series Silicon

Pressure Sensors

DESCRIPTION

The ASDX Series is a Silicon Pressure Sensor offering a

ratiometric analog 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

 Ratiometric 12-bit analog output

 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

ASDX Series Silicon Pressure Sensors

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Table 1. Absolute Maximum Ratings1

Parameter

Min

Max

Unit

Supply voltage (Vsupply)

-0.3

6.0

Vdc

Voltage to any pin

-0.3

Vsupply + 0.3

Vdc

ESD susceptibility (human body model)

Storage temperature

-50 [-58]

125 [257]

°C [°F]

Lead temperature (2 s to 4 s)

250 [482]

°C [°F]

External capacitance between Vsupply and ground2

100

470

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

1.5

2.5

3.5

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)

Response time

1.0

Upper output clipping limit

97.5

Vsupply

Lower output clipping limit

2.5

Vsupply

Minimum load resistance

5.0

kOhm

Total error band9

2.0

%FSS10

Output resolution

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

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 1 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 _ _ _ _ _ _ _ A_

Power Supply Voltage

3 = 3.3 Vdc

5 = 5.0 Vdc

Package Selection13 Calibration Selection

Series

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

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

A = Analog voltage

Future Option

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.

15. For a digital output, please refer to the ASDX Digital Series.

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.

ASDX Series Silicon Pressure Sensors

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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%

Figure 3. Completed Catalog Listing Example

ASDXAVX001PGAA3:

AV pressure port, 1 psi gage, analog

output, 10% to 90% calibration at 3.3 Vdc

operation.

ASDXAV001PGAA3 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

Definition

Type

Description

Vsupply

supply

power supply source

Vout

analog output

provides the analog output

GND

supply

power supply ground

N/C

not used