SENSIRION SDP1108 Manual

SDP1108
Low Range Differential Pressure Sensor
with fast response time
− For medical ventilators (ICU and home care)
− High sensitivity below 10 Pa to measure small volume flow (neonatal)
− Fast response time for efficient trigger function
− Unsurpassed performance thanks to CMOSens
− Offset and hysteresis free
− Fully calibrated and temperature compensated
− Not sensitive to the mounting orientation and vibrations
SDP1108 Product Summary
The SDP1108 is a differential pressure sensor for air
based on the successful SDP1000/ SDP2000 sensor
from Sensirion AG. The response time of the SDP1108
has been optimized for medical ventilation applications.
Mounted in a rugged, chemically inert PPS housing the
SDP1108 differential pressure sensors feature a
unique dynamic range, zero offset and unsurpassed
long term stability. This makes it an ideal fit for
demanding yet cost sensitive OEM applications in
medical and HVAC equipment.
The SDP1108 is fully RoHS compliant.
The SDP1108 is supplied with 5.0 V and provides a
0.25...4.0 V output. Although the output of the sensor
is analog, the internal linearization and temperature
compensation is performed digitally. This results in a
Applications
Medical applications:
• Homecare ventilation
• Intensive care ventilation (ICU)
• Other
www.sensirion.com
technology
®
Data Sheet – v1.0
superior accuracy, outstanding resolution (up to 0.05
Pa), and lowest temperature dependence.
Its leading performance is based on Sensirion's
proprietary CMOSens
combines the sensor element with amplification and
A/D conversion on one single silicon chip. The
differential pressure is measured by a thermal sensing
element. In contrast to other thermal differential
pressure sensors only a very small amount of air is
required. This leads to a reliable operation even under
harsh conditions. In comparison to membrane and
piezo-resistive based sensors the SDP1108 differential
pressure sensors show an extended measurement
range, better
reproducibility even at lowest pressure ranges. In
addition the SDP1108 is robust against pressure bursts
and shows no sensitivity to the mounting orientation.
Block Diagram
sensor technology which
®
offset stability and
V
CMOSens ® DD
5.0 V
SENSOR CHIP
GND
OUT
0.25 V
to 4 V
Sensirion – the sensor company
improved