SDP8xx Digital Series Datasheet by Sensirion AG

View All Related Products | Download PDF Datasheet
SENSIRION THE sensor: comp/u" www.5ensirion.com
www.sensirion.com Version 1.1 April 2019 1/14
Datasheet SDP8xx-Digital
Digital Differential Pressure Sensor
Excellent repeatability, no drift, no offset
Extended feature set smart averaging
Calibrated and temperature compensated
Product Summary
The SDP800 sensor family is Sensirion’s series of digital differential pressure sensors designed for high-volume applications.
The sensors measure the pressure of air and non-aggressive gases with superb accuracy and no offset drift. The sensors
cover a pressure range of up to ±500 Pa (±2 inch H2O / ±5 mbar) and deliver outstanding accuracy, also at the bottom end of
the measuring range.
The SDP800 Series features a digital 2-wire I2C interface, which makes it easy to connect directly to a microprocessor.
The outstanding performance of these sensors is based on Sensirion’s patented CMOSens® sensor technology, which
combines the sensor element, signal processing and digital calibration on a small CMOS chip. The differential pressure is
measured by a thermal sensor element using flow-through technology. The well-proven CMOS technology is perfectly suited
for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications.
Benefits of Sensirion’s CMOSens® Technology
High reliability and long-term stability
Best signal-to-noise ratio
Industry-proven technology with a track record of more
than 15 years
Designed for mass production
High process capability
Content
1. Ordering Information .............................................................. 2
2. Sensor Performance .............................................................. 2
3. Specifications ......................................................................... 3
4. Pin Assignment ...................................................................... 4
5. Measurement Modes ............................................................. 5
6. Digital Interface Description ................................................... 6
7. Package Outline................................................................... 11
8. Soldering .............................................................................. 13
9. Shipping Package ................................................................ 13
Revision History ............................................................................ 13
Important Notices ......................................................................... 14
Headquarters and Subsidiaries .................................................... 14
SENSIRION THE sensor: COMPANY SDP800-500Fa Manifold mount 500Pa - bidirectional 0x25 Trays cf 50 pieces 1-101551-01 SDP801-500Fa Manifold mount 500Pa - bidirectional 0x26 Trays cf 50 pieces 3 000 142 SDP810-500Fa Tube connection 500Pa - bidirectional 0x25 Trays cf 50 pieces 1-101532—01 SDP811-500Fa Tube connection 500Pa - bidirectional 0x26 Trays cf 50 pieces 3 000 144 SDP800-125Fa Manifold mount 125Pa - bidirectional 0x25 Trays cf 50 pieces 1-101599—01 SDP810-125Fa Tube connection 125Pa - bidirectional 0x25 Trays cf 50 pieces 1-101597—01 Parameter SDPSxx-SOOPa SDP8xx—125Pa Measurement range -500 to 500 Pa -125 to 125 Pa H2 H2 Zero point accuracy23 0.1 Pa 0.08 Pa Span accuracy 3% of reading 3% of reading Zero point repeatability3 0.05 Pa 0.04 Pa Span repeatability3 0.5% of reading 0.5% of reading Span shift due to temperature Offset stability < 0.05="" pa/year="">< 0.05="" pa/year="" flow="" step="" response="" time="" (tea)="">< 3ms="" resolution="" 16="" bit="" calibrated="" for="" air,="" n2="" media="" compatibility="" air,="" n2="" 02,="" non-condensrng="" temperature="" compensation="" range="" -20="" 0c="" to="" +85="" “c="" parameter="" value="" measurement="" range="" -40="" “c="" to="" +85="" resolution="" 16="" bit="" 2="" “c="" (-10="" “c="" to="" +60="" “0)="" repeatability="" 0.1“0="">
www.sensirion.com Version 1.1 April 2019 2/14
1. Ordering Information
Use the part name and order number shown in the following table when ordering SDP800 series differential pressure sensor.
Part name
Form Factor
Range
I2C address
Shipping Package
Order number
SDP800-500Pa
Manifold mount
500Pa - bidirectional
0x25
Trays of 80 pieces
1-101551-01
SDP801-500Pa
Manifold mount
500Pa - bidirectional
0x26
Trays of 80 pieces
3.000.142
SDP810-500Pa
Tube connection
500Pa - bidirectional
0x25
Trays of 80 pieces
1-101532-01
SDP811-500Pa
Tube connection
500Pa - bidirectional
0x26
Trays of 80 pieces
3.000.144
SDP800-125Pa
Manifold mount
125Pa - bidirectional
0x25
Trays of 80 pieces
1-101599-01
SDP810-125Pa
Tube connection
125Pa - bidirectional
0x25
Trays of 80 pieces
1-101597-01
2. Sensor Performance
2.1 Differential Pressure Specification
1
Parameter
SDP8xx-500Pa
Measurement range
-500 to 500 Pa
(-2 to 2 inH2O)
Zero point accuracy 2,3
0.1 Pa
Span accuracy 2,3
3% of reading
Zero point repeatability 3
0.05 Pa
Span repeatability 3
0.5% of reading
Span shift due to temperature
variation
< 0.5% of reading per 10°C
Offset stability
< 0.05 Pa/year
Flow step response time (τ63)
< 3ms
Resolution
16 bit
Calibrated for
Air, N2
Media compatibility
Air, N2, O2, non-condensing
Temperature compensation range
-20 °C to +85 °C
2.2 Temperature Specification
4
Parameter
Value
Measurement range
-40 °C to +85 °C
Resolution
16 bit
Accuracy
2 °C (-10 °C to +60 °C)
3 °C (-40 °C to +85 °C)
Repeatability
0.1°C
1
Unless otherwise noted, all sensor specifications are valid at 25°C with VDD = 3.3 V and absolute pressure = 966 mbar.
2
Includes repeatability
3
Total accuracy/repeatability is a sum of zero-point and span accuracy/repeatability.
4
The measured temperature is the temperature of the bulk silicon in the sensor. This temperature value is not only depending on the gas temperature, but
also on the sensor’s surroundings. Using the signal to measure solely the gas temperature will need special precautions, such as isolating the sensor from
external temperate influences.
SENSIRION THE sensor: COMPANY Parameter Symbol Condition Min. Typ. Max. Units Comments Supply Voltage VDD 2.7 5.5 V Power-up/down level V 2.3 2.5 2.7 V Measuring 3.8 5.5 mA ldle state 1.1 mA Sleep mode 1 uA Parameter Symbol Condition Min. Typ. Max. Units Comments Power-up time 1170 25 ms Time between sofl IZC SCL frequency fizc 400 1000 kHz Update rate differential Temperature value is Measurement time Triggered mode 40 45 50 ms Parameter Symbol Condition Min. Typ. Max. Units Comments Allowable overpressure Pmax 1 bar Rated burst pressure PM 5 bar Weight W 6 9 Parameter Wetted materials PBT (polybutylene lerephthalale), glass (Silicon nitride, Silicon oxide). Silicon, gold, FRA, silicone as static REACH, RoHS REACH and RoHS compliant Parameter Rating Units Supply Voltage Voo -0.3 to 5.5 V Max Voltage on pins (SDA, SCL) -0.3 to Voo+0.3 V Input current on any pin :70 mA Operating temperature range‘ -40 lo +85 Slorage temperature range -40 lo +85 Max. humidity for long term exposure 40°C dew point ESD HBM (human body model) 2 kV www.sensirion.com
www.sensirion.com Version 1.1 April 2019 3/14
3. Specifications
3.1 Electrical Specifications
Parameter
Symbol
Condition
Min.
Typ.
Max.
Units
Comments
Supply Voltage
VDD
2.7
5.5
V
Power-up/down level
VPOR
2.3
2.5
2.7
V
Supply current
IDD
Measuring
3.8
5.5
mA
Idle state
1.1
mA
Sleep mode
1
uA
3.2 Timing Specifications
Parameter
Symbol
Condition
Min.
Typ.
Max.
Units
Comments
Power-up time
tPU
25
ms
Time to sensor ready
Soft reset time
tSR
2
ms
Time between soft
reset command or exit
sleep mode and
sensor ready
I2C SCL frequency
fI2C
400
1000
kHz
Update rate differential
pressure value
Continuous mode
1800
2000
2200
Hz
Update rate
temperature value
Continuous mode
112.5
Hz
Temperature value is
updated at least every
16 pressure values
Measurement time
Triggered mode
40
45
50
ms
3.3 Mechanical Specifications
Parameter
Symbol
Condition
Min.
Typ.
Max.
Units
Comments
Allowable overpressure
Pmax
1
bar
Rated burst pressure
Pburst
5
bar
Weight
W
6
g
3.4 Materials
Parameter
Wetted materials
PBT (polybutylene terephthalate), glass (silicon nitride, silicon oxide), silicon, gold, FR4, silicone as static
sealing, epoxy, copper alloy, lead-free solder
REACH, RoHS
REACH and RoHS compliant
3.5 Absolute Minimum and Maximum Ratings
Parameter
Rating
Units
Supply Voltage VDD
-0.3 to 5.5
V
Max Voltage on pins (SDA, SCL)
-0.3 to VDD+0.3
V
Input current on any pin
±70
mA
Operating temperature range1
-40 to +85
°C
Storage temperature range
-40 to +85
°C
Max. humidity for long term exposure
40°C dew point
ESD HBM (human body model)
2
kV
1
For Air and N2. Long term exposure to (high concentrations of) O2 at high temperatures can reduce the product lifetime
SENSIRION THE sewson (UMFANY SDA GND VDD SOL www.5ensirion.com
www.sensirion.com Version 1.1 April 2019 4/14
4. Pin Assignment
The pin assignments of the SDP8xx-Digital can be found in Table 1
Pin no.
Name
Description
1
SCL
Serial Clock (I2C Interface)
2
VDD
VDD Supply
3
GND
Connect to ground
4
SDA
Bidirectional Serial Data (I2C Interface)
Table 1: SDP8xx-Digital pin assignment (bottom view).
SDA GND VDD SCL
SENSIRION nae sensor: (DMPANY Continuous mode Triggered mode Description Measures continuously Measures once after command is sent Measurement speed and Measurement result can be read out Measurement result is available in +/- 45ms Measurement method Sensor configuration is optimized for speed Sensor configuration is optimized for low Recommended use Best used where speed and accuracy are Best used where energy consumption is 2| wwwsensiric ccm
www.sensirion.com Version 1.1 April 2019 5/14
5. Measurement Modes
The SDP8xx-Digital is a highly versatile differential pressure sensor and is very flexible regarding the measurement speed.
This flexibility not only allows for optimizing the sensor’s performance to a specific application, but also for adapting the sensor
to different use cases. For example, in one use case the sensor is detecting the smallest and fastest changes, whereas at
another time the sensor can measure in larger intervals while consuming only little energy.
5.1 Continuous Mode vs Triggered Mode
In continuous mode the sensor is measuring at the highest speed and writes the measurement values to the I2C results buffer,
where the I2C master can read out the value when it requires.
In triggered mode the sensor is default in an idle state and wakes up when the command is sent. It then powers up the heater
and does a measurement. During this time the sensor doesn’t acknowledge any I2C read header, or stretches the clock when
clock stretching is enabled. When the measurement is finished the sensor returns to the idle state and makes the
measurement result available to be read out.
For more details see chapter 6.3.3.
Continuous mode
Triggered mode
Description
Measures continuously
Measures once after command is sent
Measurement speed and
rate
Measurement result can be read out
continuously and at any time, but not faster
than 0.5ms.
Measurement result is available in +/- 45ms
after command.
Clock stretching is available.
Measurement method
Sensor configuration is optimized for speed
and accuracy.
Sensor configuration is optimized for low
power consumption.
Recommended use
Best used where speed and accuracy are
most important.
Best used where energy consumption is
more important than speed.
5.2 Continuous Mode and Average till Read
In continuous measurement modes a new measurement result is available every 0.5ms. A new value can be read out every
0.5ms.
If the ‘average till read’ option is chosen, the sensor averages all values (xi) since last read out, or, when no read has occurred
yet, since last start measurement command. This has the benefit that the user can read out the sensor at its own desired
speed, without losing information and thus prevents aliasing. During the first 25 ms of averaging the averaged value is
obtained as the arithmetic mean.
 
   
When the reading speed is even slower than 25 ms, the sensor will continue to average, but with another algorithm. In this
algorithm exponential smoothing is used, with a smoothing factor = 0.05.
      
Where S0 is the arithmetic value after the first 25 ms.
Please refer to relevant literature for more information about exponential smoothing.
5.3 Temperature Compensation Modes and Absolute Pressure Dependency
The SDP8xx is temperature compensated both for differential pressure and for mass flow compensated differential pressure.
In use cases where the SDP8xx is used to measure mass flow it is advised to use mass flow temperature compensation. In
this case no absolute pressure compensation is required.
For more information about temperature and absolute pressure compensation for differential pressure sensors, for example
volume flow measurements in bypass, refer to the selection guide in the differential pressure download center on our website.
SENSIRION was senson comp/u" Product Variant IZC address SDP800-500Pa / SDP810-500Pa 0X25 (b 0100101) SDP800-125Pa / SDP810-125Pa 0X25 (b 0100101) SDP801-500Pa / SDP811-500Pa 0x26 ([7 0100110) IZC master writes 16 bit command 111111 1111111H1111111 wI 111111 1111111 1111111 IZC master sends read header and receives multiple 16bit words with CRC byte. 1 1 1 1 1 1 R Q a 1 1 1 1 1 1 9 E E Dark areas with thte text Indicate that the sensor controls the SDA( Data) line. C C ACK ACK —‘ AiK |:l 1 I: wwwsensirionmm
www.sensirion.com Version 1.1 April 2019 6/14
6. Digital Interface Description
The SDP8xx-digital interface is compatible with the I2C protocol. This chapter describes the command set for SDP8xx-digital.
For detailed information about the I2C protocol, please check the document "NXP I2C-bus specification and user manual".
6.1 I2C Addresses
The following table lists the SDP8xx-digital product variants and its I2C addresses.
Product Variant
I2C address
SDP800-500Pa / SDP810-500Pa
0x25 (b 0100101)
SDP800-125Pa / SDP810-125Pa
0x25 (b 0100101)
SDP801-500Pa / SDP811-500Pa
0x26 (b 0100110)
The address is followed by a read or write bit.
6.2 I2C Sequences
The commands are 16-bit. Data is read from the sensor in multiples of 16-bit words, each followed by an 8-bit checksum to
ensure communication reliability.
I2C master writes 16 bit command
I2C master sends read header and receives multiple 16bit words with CRC byte.
Dark areas with white text indicate that the sensor controls the SDA (Data) line.
I2C sequences can be aborted with a NACK and STOP condition.
6.3 I2C Commands
The command set of the SDP8xx-digital consists of a set of different commands:
- Continuous measurement
o Start Continuous measurement commands
o Stop measurement command
- Triggered measurement commands
- Soft reset
- Entering and exiting sleep mode
- Read product identifier and serial number
S
W
ACK
I2CAdr[6:0]
Cmd[15:8]
ACK
Cmd[7:0]
ACK
S
R
ACK
I2CAdr[6:0]
Data1[15:8]
ACK
Data1[7:0]
ACK
CRC1[7:0]
ACK
P
Data2[15:8]
ACK
Data2[7:0]
ACK
CRC2[7:0]
ACK
P
or
DataX[15:8]
ACK
DataX[7:0]
ACK
CRCX[7:0]
ACK
P
or
Command code (Hex) Temperature compensation Averaging 0x3603 Mass fiow Average tiil read SENSIRION THE sense»: (UMFANY 0x3608 Mass fiow None - Update rate 0.5ms 0x3615 Difierential pressure Average tiil read 0x361E Difierential pressure None - Update rate 0.5ms Preceding Consecutive read Description continuous Byte1:DP8msb After a start continuous measurement Command Command code (Hex) Description Stopcontinuous 0x3FF9 This command stops the continuous wwwsensirioncom
www.sensirion.com Version 1.1 April 2019 7/14
6.3.1 Start Continuous Measurement
The sensor measures both the differential pressure and temperature. Both measurement results can be read out through one
single I2C read header.
Continuous measurements can be started up in different configurations by a set of commands.
Command code (Hex)
Temperature compensation
Averaging
0x3603
Mass flow
Average till read
0x3608
Mass flow
None - Update rate 0.5ms
0x3615
Differential pressure
Average till read
0x361E
Differential pressure
None - Update rate 0.5ms
After one of the commands has been sent, the chip continuously measures and updates the measurement results. New
results can be read continuously with only an I2C read header.
The measurement command must only be sent once, if acknowledged. The command must not be resent or other commands
must not be sent until the stop measurement command has been issued.
After the start measurement command is sent:
- the first measurement result is available after 8ms.
- small accuracy deviations (few % of reading) can occur during the next 12ms.
When no measurement data is yet available the sensor will respond with a NACK to the I2C read header (I2C address + read
bit).
Preceding
command
Consecutive read
Description
continuous
measurement
Byte1: DP 8msb
Byte2: DP 8lsb
Byte3: CRC
Byte4: Temp 8msb
Byte5: Temp 8lsb
Byte6: CRC
Byte7: Scale Factor differential pressure 8msb
Byte8: Scale Factor differential pressure 8lsb
Byte9: CRC
After a start continuous measurement
commands, the measurement results can be
read out.
The temperature and scale factor don’t need to
be read out (every time). The read sequence
can be aborted by a NACK and a STOP
condition.
The scale factor is for differential pressure in
Pascal.
6.3.2 Stop Continuous Measurement
Command
Command code (Hex)
Description
Stop continuous
measurement
0x3FF9
This command stops the continuous
measurement and puts the sensor in idle mode.
It powers off the heater and makes the sensor
receptive to another command after 500us.
The Stop command is also required when
switching between different continuous
measurement commands.
When the sensor is in continuous measurement mode, the sensor must be stopped before it can accept another command.
The only exception is the soft reset command as described in section 6.3.4.
In idle mode the sensor will consume less power, but consider the sleep mode for most effective energy saving.
SENSIRION THE sensor: COMPANY Command code (Hex) Temperature compensation Clock stretching 0x3624 Mass flow 0x3726 Mass flow Yes 0x362F Diflerential pressure 0x372D Diflerential pressure Yes Method Available Description Clock stretching Only for clock The sensor starts the measurement after the triggered measurement Polling Only for non-clock In this mode the sensor does not acknowledge (NACK) an IZC read Preceding Consecutive read Description Triggered Byte1:DP8msb After a triggered measurement command, the Command IZC address + W bit + Consecutive Description General call OXOOOB NA This sequence resets the sensor. Note that the IZC address is 0x00 which is the general call address and that the command is 8 bit. www.sensirion.com
www.sensirion.com Version 1.1 April 2019 8/14
6.3.3 Triggered Measurement
During a triggered measurement the sensor measures both differential pressure and temperature. The measurement starts
directly after the command has been sent. The command needs to be repeated with every measurement.
Command code (Hex)
Temperature compensation
Clock stretching
0x3624
Mass flow
0x3726
Mass flow
Yes
0x362F
Differential pressure
0x372D
Differential pressure
Yes
During the 45ms that the sensor is measuring, no command can be sent to the sensor. After the 45ms the result can be read
out and any command can be sent to the sensor.
Monitoring whether or not the sensor is ready with its measurement can be done with the following methods.
Method
Available
Description
Clock stretching
Only for clock
stretching commands
The sensor starts the measurement after the triggered measurement
command with clock stretching. When an I2C read header is sent within
45ms the sensor performs clock stretching after acknowledging the
read header.
When the sensor has finished the measurement, it makes the result
available by releasing the SCL.
Polling
Only for non-clock
stretching commands
In this mode the sensor does not acknowledge (NACK) an I2C read
header as long as no measurement result is available.
When new measurement data is available it can be read out by sending an I2C read header and reading out the data from the
sensor. In the table below the data layout of the results can be found.
Preceding
command
Consecutive read
Description
Triggered
measurement
Byte1: DP 8msb
Byte2: DP 8lsb
Byte3: CRC
Byte4: Temp 8msb
Byte5: Temp 8lsb
Byte6: CRC
Byte7: Scale Factor differential pressure 8msb
Byte8: Scale Factor differential pressure 8lsb
Byte9: CRC
After a triggered measurement command, the
results can be read out when the sensor is
finished with the measurement.
The temperature and scale factor don’t need to
be read out (every time). The read sequence
can be aborted by a NACK and a STOP
condition.
The scale factor is for differential pressure in
Pascal.
6.3.4 Soft Reset
Command
I2C address + W bit +
command code (Hex)
Consecutive
read
Description
General call
reset
0x0006
NA
This sequence resets the sensor.
Note that the I2C address is 0x00, which is the general call
address, and that the command is 8 bit. The reset is
implemented according to the I2C specification.
After the reset command the sensor will take maximum 2ms to reset. During this time the sensor will not acknowledge its
address nor accept commands.
SENSIRION THE sense»: (UMFANY Command Command code Consecutive Description Enter Sleep mode 0x3677 NA Triggered mode: the sleep command can be sent after the Exit Sleep mode NA NA The sensor exits the sleep mode and enters the idle mode Command Command code Consecutive read Description Read product 0x367C Bytei: Product number [31 :24] Note that both commands need to be preceded Product Product number SDP800-500Pa 0x03020101 SDP8i0-500Pa 0x03020A01 SDP801-500Pa 0x03020401 SDP8i1-500Pa 0x03020D01 SDP800-125Pa 0x03020201 SDP8i0-125Pa 0x03020801 wwwsensiricnccm
www.sensirion.com Version 1.1 April 2019 9/14
6.3.5 Entering and Exiting Sleep Mode
In sleep mode the sensor uses the minimum amount of current. The mode can only be entered from idle mode, i.e. when the
sensor is not measuring.
This mode is particularly useful for battery operated devices. To minimize the current in this mode, the complexity of the sleep
mode circuit has been reduced as much as possible, which is mainly reflected by the way the sensor exits the sleep mode.
In sleep mode the sensor cannot be soft reset.
Command
Command code
(Hex)
Consecutive
read
Description
Enter Sleep mode
0x3677
NA
Triggered mode: the sleep command can be sent after the
result have been read out and the sensor is in idle mode.
Continuous mode: the sleep command can be sent after a
stop continuous measurement command has been issued
and the sensor is in idle mode.
Exit Sleep mode
NA
NA
The sensor exits the sleep mode and enters the idle mode
when it receives the valid I2C address and a write bit (‘0’).
Note that the I2C address is not acknowledged. The sensor
should wake up within 2ms. Polling with a write header (I2C
address and a write bit) can be used to check whether the
sensor has woken up.
6.3.6 Read Product Identifier
During assembly and start-up of the system, it might be required to check some basic parameters in the sensor - for example
to check if the correct sensor is integrated.
The product identifier and serial number can be read out after sending a sequence of two commands, both preceded by a start
condition.
Command
Command code
Consecutive read
Description
Read product
identifier
0x367C
0xE102
Byte1: Product number [31:24]
Byte2: Product number [23:16]
Byte3: CRC
Byte4: Product number [15:8]
Byte5: Product number [7:0]
Byte6: CRC
Byte7: Serial number [63:56]
Byte8: Serial number [55:48]
Byte9: CRC
Byte10: Serial number [47:40]
Byte11: Serial number [39:32]
Byte12: CRC
Byte13: Serial number [31:24]
Byte14: Serial number [23:16]
Byte15: CRC
Byte16: Serial number [15:8]
Byte17: Serial number [7:0]
Byte18: CRC
Note that both commands need to be preceded
with an I2C write header (I2C address + W).
The second command returns:
- 32 bit unique product and revision
number. The number is listed in the
table below.
Note that the last 8 bits are the revision
number and can be subject to change.
- 64 bit unique serial number
Product
Product number
SDP800-500Pa
0x03020101
SDP810-500Pa
0x03020A01
SDP801-500Pa
0x03020401
SDP811-500Pa
0x03020D01
SDP800-125Pa
0x03020201
SDP810-125Pa
0x03020B01
Property Value Name ORG-8 Protected data read data Width 8 bit Polynomial 0x31 (x8 + x5 + x4 +1) Initialization OxFF Reflect input False Reflect output False Final XOR 0x00 Example CRC(0xBEEF) = 0x92 Parameter SDPSxx-SOOPa SDP8xx-125Pa Differential Pressure (Pascal) 60 Pa 240 Pa Differential Pressure (inches H20) 14‘945 (inH20)‘ 59‘780 (inHzO)‘ Temperature ("0) 200 °C‘ 200 “C‘ SENSIRION THE sewson (UMFANY www.sensirion.com
www.sensirion.com Version 1.1 April 2019 10/14
6.4 Checksum Calculation
The checksum byte is generated by a CRC algorithm with the following properties:
Property
Value
Name
CRC-8
Protected data
read data
Width
8 bit
Polynomial
0x31 (x8 + x5 + x4 +1)
Initialization
0xFF
Reflect input
False
Reflect output
False
Final XOR
0x00
Example
CRC(0xBEEF) = 0x92
6.5 Conversion to Physical Values
Conversion of the differential pressure and temperature sensor signals to a physical value is done with the scale factor.
6.5.1 Scale Factors
Parameter
SDP8xx-500Pa
SDP8xx-125Pa
Differential Pressure (Pascal)
60 Pa-1
240 Pa-1
Differential Pressure (inches H2O)
14’945 (inH2O)-1
59’780 (inH2O)-1
Temperature (°C)
200 °C-1
200 °C-1
6.5.2 Differential Pressure
The digital calibrated differential pressure signal read from the sensor is a signed integer number (two's complement number).
The integer value can be converted to the physical value by dividing it by the scale factor.
differential pressure = sensor output scale factor
6.5.3 Temperature
The digital calibrated temperature signal read from the sensor is a signed integer number (two's complement number). The
integer value can be converted to the physical value by dividing it by the scale factor.
temperature in °C = sensor output scale factor
19qu ‘27101 H651 15an C63“ 10252n25 132‘291‘ H.65‘ ‘0252n25 SENSIRION rue sewson (DMPANY “am (9352M mum (965‘ ‘ 26 1351 {wa‘ www.5ensirion.com
www.sensirion.com Version 1.1 April 2019 11/14
7. Package Outline
7.1 Dimensions SDP80x Manifold Connection
Figure 1: SDP80x. All dimensions in mm.
7.2 Dimensions SDP81x Tube Connection
Figure 2: SDP81x. All dimensions in mm.
SENSIRION THE SENSOR COMPANY 11 12 11,3 111 11.3 12 (Ox—Orr) .— A ‘ "‘flfwflwr‘ffiwwr/ 4.45 ; / \ ‘ (\ | :95 ‘ V y y , o m a a ‘i o 3 1 MW W K\L 2,5 595 ‘ 7 f H ”2 ! L__L____ ”XX _____ J www.sensirion.oom
www.sensirion.com Version 1.1 April 2019 12/14
7.3 Footprint
Figure 3: Footprint for PCB mounting (top view = sensor side). All dimensions in mm.
A: Overall sensor dimensions
B: Holes for additional mounting screws (optional)
In case the sensor is not mounted on a PCB and is connected with a cable, the SDP800 series cap is recommended.
A
B
SCL VDD GND SDA
SENSIRION YHE sense»: (DMFANY Wave Exil fr Flux zone Preheat zone "c Solder Wave Peak no 7 no ‘ no _ c _ FCBtop-side C Approx. Dam Aulhor Version Changes 21 03.2013 ANB V1 Re‘eased 02 04.2019 ANB V1 1 Added SDPBO1-500Pa and SDPBM-SOOPa producwariams, whmh have I C address 0x26. wwwsensirionmm
www.sensirion.com Version 1.1 April 2019 13/14
8. Soldering
Standard wave soldering systems may be used for soldering SDP800 series sensors. Reflow soldering is not feasible and
may damage the sensor.
The sensor ports must be protected from solder splash and flux during soldering. Figure 4 shows an appropriate temperature
profile with maximum temperature values.
Figure 4: Suitable wave soldering profile.
The characteristics of wave soldering machines vary, so any soldering setup must be tested before production use.
9. Shipping Package
SDP8xx are shipped in trays of 80pcs. The tray dimension is 355mm x 255mm x 21.5mm. By piling them up, the height per
tray can be considered as 19mm.
Revision History
Date
Author
Version
Changes
21.03.2018
ANB
V1
Released
02.04.2019
ANB
V1.1
Added SDP801-500Pa and SDP811-500Pa product variants, which have I2C address 0x26.
Minor clarifications in chapter 5.2, 6.1, 6.3.1 and 6.3.6. Made Ordering information 1st chapter.
200°C
150°C
100°C
50°C
C
250°C
Start
Flux zone
Preheat zone
Entrance to solder Wave
Exit from solder Wave
Solder Wave Peak
Temp. Max. 260°C
Max 145°C
Approx. PCB bottom-
side temp.
PCB top-side
temperature
Approx.
1 min
(Time in wave < 2 s)
Sensirion AG info@sensir10n.com www.3ensirion.com Sensirion Taiwan Co. Ltd phone: +886 3 55067 info@sensir10n.com www.3ensirion.com Sensirion Inc., USA phone: +1 312 690 585 1nfo-us@sensirion.com www.5ensirion.com Sensirion Japan Co. Ltd. phone: +81 3 3444 494 1nfo-'p@sensirion.com www.5ensirion.co.'p SENSIRION YHE senson (DMPANY Sensirion Korea Co. Ltd. phone: +82 31 337 77 info-kr@sensir10n.com www.3ensirion.co.kr Sensirion china Co. Ltd. phone: +86 755 8252 1 info-cn@sensirion.com www.3ensir10n.com.cn www.sensirion.oom/distributors www.5ensirion.com
www.sensirion.com Version 1.1 April 2019 14/14
Important Notices
Warning, personal injury
Do not use this product as safety or emergency stop devices or in
any other application where failure of the product could result in
personal injury (including death). Do not use this product for
applications other than its intended and authorized use. Before
installing, handling, using or servicing this product, please
consult the datasheet and application notes. Failure to comply
with these instructions could result in death or serious injury.
If the Buyer shall purchase or use SENSIRION products for any
unintended or unauthorized application, Buyer shall defend, indemnify
and hold harmless SENSIRION and its officers, employees,
subsidiaries, affiliates and distributors against all claims, costs,
damages and expenses, and reasonable attorney fees arising out of,
directly or indirectly, any claim of personal injury or death associated
with such unintended or unauthorized use, even if SENSIRION shall be
allegedly negligent with respect to the design or the manufacture of the
product.
ESD Precautions
The inherent design of this component causes it to be sensitive to
electrostatic discharge (ESD). To prevent ESD-induced damage and/or
degradation, take customary and statutory ESD precautions when
handling this product.
See application note “Handling Instructions for more information.
Warranty
SENSIRION warrants solely to the original purchaser of this product for
a period of 12 months (one year) from the date of delivery that this
product shall be of the quality, material and workmanship defined in
SENSIRION’s published specifications of the product. Within such
period, if proven to be defective, SENSIRION shall repair and/or
replace this product, in SENSIRION’s discretion, free of charge to the
Buyer, provided that:
notice in writing describing the defects shall be given to
SENSIRION within fourteen (14) days after their appearance;
such defects shall be found, to SENSIRION’s reasonable
satisfaction, to have arisen from SENSIRION’s faulty design,
material, or workmanship;
the defective product shall be returned to SENSIRION’s factory at
the Buyer’s expense; and
the warranty period for any repaired or replaced product shall be
limited to the unexpired portion of the original period.
This warranty does not apply to any equipment which has not been
installed and used within the specifications recommended by
SENSIRION for the intended and proper use of the equipment.
EXCEPT FOR THE WARRANTIES EXPRESSLY SET FORTH
HEREIN, SENSIRION MAKES NO WARRANTIES, EITHER EXPRESS
OR IMPLIED, WITH RESPECT TO THE PRODUCT. ANY AND ALL
WARRANTIES, INCLUDING WITHOUT LIMITATION, WARRANTIES
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, ARE EXPRESSLY EXCLUDED AND DECLINED.
SENSIRION is only liable for defects of this product arising under the
conditions of operation provided for in the datasheet and proper use of
the goods. SENSIRION explicitly disclaims all warranties, express or
implied, for any period during which the goods are operated or stored
not in accordance with the technical specifications.
SENSIRION does not assume any liability arising out of any application
or use of any product or circuit and specifically disclaims any and all
liability, including without limitation consequential or incidental damages.
All operating parameters, including without limitation recommended
parameters, must be validated for each customer’s applications by
customer’s technical experts. Recommended parameters can and do
vary in different applications.
SENSIRION reserves the right, without further notice, (i) to change the
product specifications and/or the information in this document and (ii) to
improve reliability, functions and design of this product.
Copyright © 2016-2019, SENSIRION.
CMOSens® is a trademark of Sensirion
All rights reserved
Headquarters and Subsidiaries
Sensirion AG
Laubisruetistr. 50
CH-8712 Staefa ZH
Switzerland
phone: +41 44 306 40 00
fax: +41 44 306 40 30
info@sensirion.com
www.sensirion.com
Sensirion Inc., USA
phone: +1 312 690 5858
info-us@sensirion.com
www.sensirion.com
Sensirion Korea Co. Ltd.
phone: +82 31 337 7700~3
info-kr@sensirion.com
www.sensirion.co.kr
Sensirion Japan Co. Ltd.
phone: +81 3 3444 4940
info-jp@sensirion.com
www.sensirion.co.jp
Sensirion China Co. Ltd.
phone: +86 755 8252 1501
info-cn@sensirion.com
www.sensirion.com.cn
Sensirion Taiwan Co. Ltd
phone: +886 3 5506701
info@sensirion.com
www.sensirion.com
To find your local representative, please visit www.sensirion.com/distributors

Products related to this Datasheet

SENSOR PRESSURE DIFF
SENSOR PRESSURE DIFF
SENSOR PRESSURE DIFF
EVALUATION KIT SDP800 SERIES
SENSOR PRESSURE DIFF