Integrated Pressure Transducer
IPT
Honeywell’s Integrated Pressure Transducer (IPT) provides high accuracy pressure data in an industry standard SPI
digital format. The core of the IPT is a proven Honeywell silicon piezoresistive pressure sensor with both pressure
and temperature sensitive elements. The IPT is small and lightweight and can be easily integrated by the user into a
wide variety of applications that require high performance in a small package. Applying the coefficients stored in the
on-board EEPROM to the normalized IPT pressure and temperature output yields highly accurate and stable pres-
sure readings over the -40 to 85°C compensated temperature range.
APPLICATIONS:
Air Data Computers
Altimeters
Cabin Air Pressure
Engine Test Systems
Flight Test Systems
Meteorology
Flow and Pressure Calibrators
0.04% FS Total
Error Band, -40
to 85°C, Absolute
Small and
Lightweight
Instrumentation and Analytical Equipment
Research and Development
Excellent
Pressure
Stability
±0.10% FS Total
Error Band, -40
to 85ºC, Gauge/
Differential
ISO-9001
ISO-14001
FEATURES AND BENEFITS
►
High Accuracy Over a Wide Tem-
perature Range
From -40 to 85°C
±0.04% FS Total Error Band
(absolute pressure),
to ±0.10% FS Total Error Band
(gauge/ differential pressure)
(1)
►
Stored Correction Coefficients in EEPROM –
Ready to use;
No additional pressure and temperature calibration necessary.
Simplifies System Design –
No additional signal compensation
needed to achieve a highly accurate pressure reading.
►
Digital SPI Output
►
Small and Versatile
►
Industry Standard Interface –
Ready communication between
a µController/µProcessor and the IPT.
3
►
Volume
~ 1 in
(16 cm
3
)
Lightweight –
Less than 10 grams.
Media Interface –
Handles most dry gas media.
IPT
DIMENSIONS
SPECIFICATIONS
Performance Specifications
(1)
Total Error:
(from -40 to 85ºC)
±0.04%FS absolute
±0.10%FS gauge, differential
±0.20%FS 1 psi gauge
Temperature Range:
Operating -40 to 85ºC (-40 to 185ºF)
Storage: -55 to 125ºC (-67 to 257ºF)
Long Term Stability:
0.025% FS max per year typical
Mechanical Specifications
Pressure Ranges and Type:
See Ordering Information at right
Pressure Units
:
PSI
(2)
Media Compatibility:
Suitable for non-condensing,
non-corrosive, and non-combustible gases.
Weight
(3)
:
≈ 8.0 grams (absolute)
≈ 9.7 grams (gauge, differential)
Electrical Specifications
Output:
24-bit pressure value
16-bit temperature value
256 x 8 EEPROM configuration
Power Requirements:
Supply Voltage: 4 to 12 VDC
Current Consumption:
6 mA typical, 7.5 mA max
Interface:
3.3V SPI (mode 1,1) SCLK
≤5
Mhz
Sample Rate:
166 samples/second
Environmental Features
(3)
Overpressure:
3x FS
Burst Pressure:
3x FS
Mechanical Shock:
DO-160E Section 7.0, Category
A, Figure 7.2, Operational Standard
Thermal Shock:
Storage Temperature Cycling per
JESD22-104, Section 5.0: -55 to +125ºC
Vibration:
DO-160E Section 8, Category H, Aircraft
Type 2, Aircraft Zones 1 & 2
RoHS:
Compliant
ORDERING INFORMATION
IPT Integrated Pressure Transducer
FULL SCALE PRESSURE RANGE
0001
0002
0005
0010
0020
0050
Absolute
N/A
N/A
N/A
N/A
20 PSI
50 PSI
Gauge
1 PSI
(1)
2 PSI
5 PSI
10 PSI
20 PSI
50 PSI
Differential
±1 PSI
±2 PSI
±5 PSI
±10 PSI
±20 PSI
±50 PSI
TYPE
A
G
D
Absolute
Gauge
Differential
33
3.3 volts
P1 Pressure
0 (vacuum) to FS
Reference to FS
+FS to –FS rel. to P2
P2 Pressure
N/A
Reference
+FS to –FS rel. to P1
DIGITAL INTERFACE VOLTAGE
POWER SUPPLY
R
Regulated, 4-12VDC
OPTIONS
A
Demonstration Kit
(4)
IPT
0020
A
33
R
A
CONNECTOR
(1)
Find out more
Total Error is the sum of worst case linearity, repeatability, hysteresis, thermal effects, and
calibration errors over the operating temperature range. Accuracy is only achieved after apply-
ing the correction coefficients and algorithm as shown in section 3.2. of Product Specification
(FS = Full Scale). For total error calculations of differential units, “Full Scale” is the pressure
difference between the minimum and maximum pressures. For example, full scale for a 1 psid
PPT is 2 psi (-1 to +1 psi). Pressure range 1psi gauge has total error of ±0.20% FS.
(2)
After
applying the correction coefficients stored in EEPROM, the resultant pressure reading is ex-
pressed in PSI (pounds per square inch).
(3)
Not including mounting hardware.
(4)
Demonstra-
tion kit includes RS-232 Cable, Demo Board, AC adapter, MS Windows Software, and User’s
Manual.
ESD (electrostatic discharge) sensitive device.
Damage may occur when subjected to high
energy ESD. Proper ESD precautions should be taken to avoid performance degradation or loss of
functionality.
EOS (electrical overstress) sensitive device.
Damage may occur when subjected to EOS. Do not exceed specified ratings to avoid performance
degradation or loss of functionality.
For more information visit us online at
www.pressuresensing.com
Customer Service Email: quotes@honeywell.com
Honeywell reserves the right to make changes to improve reliability, func-
tion or design. Honeywell does not assume any liability arising out of the
application or use of any product or circuit described herein; neither does it
convey any license under its patent rights nor the rights of others.
Honeywell
12001 Highway 55
Plymouth, MN 55441
www.pressuresensing.com
ADS-14184
July 2016
© 2016 Honeywell International Inc.
Discrete Device
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