23 and 33 Standard
23 33
PC Board Mountable Pressure Sensor
0-100 mV Output
Current Excitation
Gage and Differential
Temperature Compensated
DESCRIPTION
The 23 and 33 are temperature compensated, piezoresistive silicon pressure sensors packaged in a
TO-8 configuration. It provides excellent performance and long-term stability.
Gage and absolute pressure ranges from 0-2 to 0-250 psi are available. Integral temperature
compensation is provided over a range of 0-50°C using laser-trimmed resistors. An additional laser-trimmed
resistor is included to normalize pressure sensitivity variations by programming the gain of an external
differential amplifier. This provides sensitivity interchangeability of ±1%.
Please refer to the 23 and 33 1 psi datasheets for low pressure applications.
FEATURES APPLICATIONS
TO-8 Package Medical Instruments
0ºC to 50ºC Compensated
Temperature Range
Process Control
Factory Automation
±0.1% Non Linearity Handheld Calibrators
1.0% Interchangeable Span
(provided by gain set resistor)
Airspeed Measurement
Solid State Reliability
STANDARD RANGES
23 33
Range psig psid
0 to 2
0 to 5
0 to 10
0 to 15
0 to 30
0 to 50
0 to 100
0 to 250
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23 and 33 Standard
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PERFORMANCE SPECIFICATIONS
Supply Current: 1.5mA
Ambient Temperature: 25°C (un less otherwise specified)
PARAMETERS MIN TYP MAX UNITS NOTES
Span 75 100 150 mV 1
Span (2psi version) 30 60 mV 1
Zero Pressure Output -2 2 mV
Pressure Non Linearity -0.1 ±0.05 0.1 %Span 2
Pressure Hysteresis -0.05 ±0.01 0.05 %Span
Input & Output Resistance 2500 4400 6000 Ω
Temperature Error – Span -0.5 ±0.3 0.5 %Span 3
Temperature Error – Zero -0.5 ±0.1 0.5 %Span 3
Thermal Hysteresis – Zero ±0.1 %Span 3
Supply Current 1.5 2.0 mA
Response Time (10% to 90%) 1.0 mS 4
Output Noise (10Hz to 1kHz) 1.0 µV p-p
Insulation Resistance (50 Vdc) 50 M Ω 5
Long Term Stability (Offset & Span) ±0.2 %Span 6
Pressure Overload 3X Rated 7
Compensated Temperature 0 50 °C
Operating Temperature -40 +125 °C
Storage Temperature -50 +150 °C
Weight 3 grams
Solder Temperature 250ºC Max 5 Sec.
Media Non-Corrosive Dry Gases Compatible with Silicon, Pyrex,
RTV, Gold, Nickel, and Aluminum
Notes
1. Ratiometric to supply current.
2. Best fit straight line.
3. Maximum temperature error between 0°C and 50°C with respect to 25°C. For 2 psi devices, Temperature Error – Zero is ±1.25%.
4. For a zero-to-full scale pressure step change.
5. Minimum resistance between case and pins.
6. Long term stability over a one year period with constant current and temperature.
7. For topside applications, 2X maximum for 250 psi device, 20 psi maximum for 2 and 5 psi devices. For backside applications, 3X not to
exceed 100 psi on all ranges.
23 and 33 Standard
DIMENSIONS
CONNECTIONS
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23 and 33 Standard
23and33_Standard www.meas-spec.com June 2011
APPLICATION SCHEMATIC
ORDERING INFORMATION
33A - 015 D
Model
Pressure Range
Type (D = Differential)
23A - 015 G
Model
Pressure Range
Type (G = Gage)
NORTH AMERICA EUROPE ASIA
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Sales: pfg.cs.amer@meas-spec.com
Measurement Specialties
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78340 Les Clayes-sous-Bois, France
Tel: +33 (0) 130 79 33 00
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Sales: pfg.cs.emea@meas-spec.com
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(China), Ltd.
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Nanshan District, Shenzhen 518057
China
Tel: +86 755 3330 5088
Fax: +86 755 3330 5099
Sales: pfg.cs.asia@meas-spec.com
The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for
inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the
manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement
Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does
Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims
any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different
applications. All operating parameters must be validated for each customer application by customer’s technical experts. Measurement
Specialties, Inc. does not convey any license under its patent rights nor the rights of others.
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