BPS125 Pressure Sensor Datasheet

BPS125 Datasheet, PDF, Equivalent


Part Number

BPS125

Description

Digital Low Pressure Sensor

Manufacture

BOURNS

Total Page 6 Pages
Datasheet
Download BPS125 Datasheet


BPS125
Features
n 3.3 volt supply
n Compensated digital output (I2C)
n Ultra-low pressure sensing (250 Pa)
n Gauge and differential types
n For use in clean, dry air and non-corrosive
gas environments
n RoHS compliant*
Applications
Industrial:
n HVAC systems
n Process monitoring
n Packaging automation
**Medical Devices (low/medium risk):
n Diagnostic equipment
n Analysis equipment
BPS125 Series - 12 mm Digital Low Pressure Sensor
Electrical Characteristics
Supply Voltage (Vs).......................................................................................................................... 3.0 V minimum, 3.3 V typical, 3.6 V maximum
Supply Current @ 5 V.................................................................................................................1.2 mA minimum, 2 mA typical, 3.5 mA maximum
Performance Characteristics
Operating Temperature.................................................................................................................................... -40 °C to +85 °C (-40 °F to +185 °F)
Storage Temperature..................................................................................................................................... -55 °C to +100 °C (-67 °C to +212 °F)
POruetspsuut..r.e...R..a..n..g..e.......................................................................................................................................................................................2..5..0...t.o...5..0..0...P...a..,..0....1..5...t.o...1....0...P..S..I..(..1...”..H..2..O....t.o...2...”..H...2.O...,..1....0..3.Dtiogi6ta.8l 9I2CkP(a1))
Effective ADC Resolution................................................................................................................................................................................. 13 bit
Accuracy @ 25 °C.................................................................................................................................................................................. ±0.25 % FS
Total Error Band over 0 °C to 60 °C (+32 °F to +140 °F)......................................................................................................................... ± 1.5 % FS
Long Term Stability.................................................................................................................................................................................. ± 0.5 % FS
Startup Time................................................................................................................................................................................... 15 ms maximum
Digital Update Time.............................................................................................................................................................................8.5 ms typical
Proof Pressure....................................................................................................................................................................... 5X full scale pressure
Burst Pressure................................................................................................................................................................................................. 10 psi
(1) I2C address is set to (0x28). Alternative addresses are available. Consult the factory for custom options.
Product Characteristics
Media Compatibility.......................................................................................................................................................... Non-corrosive dry gasses
Moisture Sensitivity Level........................................................................................................................................................................................1
ESD Classification (HBM)..................................................................................................................................................................................2 kV
Marking................................................................................... Partial model number, media compatibility, pressure type, pressure rating, lot code
Standard Packaging................................................................................................................................................................ 250 pcs./13-inch reel
Weight..................................................................................................................................................................................1.307 grams (0.046 oz)
Transfer Function Formula
Basic Circuit Schematic
(P psi
=
(Pmax
Pmin)
• Pcoun0t.s8–•
0.1 •
Max
Max
)
+ Pmin
Where
Ppsi = Measured Pressure in PSI
Pcounts = Pressure Counts
Pmin = Minimum Pressure
Pmax = Maximum Pressure
Max = 16384 = 14 Bits
1
Vs
DIGITAL
OUT
SSC
SCL
SDA
8
7
Consult factory for custom options such as supply voltage,
temperature calibration range, output range accuracy
specification, and update rate.
GND
4
Note: Power supply decoupling included.
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
* RoHS3 Directive 2015/863 Amendments of Annex II on March 31, 2015
** Bourns® products have not been designed for and are not intended for use in “lifesaving,” “life-critical” or “life-sustaining” applications nor any other applications
where failure or malfunction of the Bourns® product may result in personal injury or death. See Legal Disclaimer Notice on the last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

BPS125
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I2C Parameters
SCL Clock Frequency fSCL...............................................................................................................................................................100 to 400 kHz
Start Condition Hold
Minimum SCL Clock
Minimum SCL Clock
THLiomigwheWWRieiddltathht1i1vettLHOtoIGWSH..C.......L....E......d....g....e......t..H....D....S....T....A..................................................................................................................................................................................................................................................................................................................................................................................................
0.1
0.6
0.6
µs
µs
µs
Start Condition Setup Time Relative to SCL Edge tSUSTA..............................................................................................................................0.1 µs
Data Hold Time on SDA Relative to SCL Edge tHDDAT...................................................................................................................................0.0 µs
Data Setup Time on SDA Relative to SCL Edge tSUDAT.................................................................................................................................0.1 µs
Stop Condition Setup Time on SCL tSUSTO....................................................................................................................................................0.1 µs
Bus Free Time Between Stop Condition and Start Condition tBUS.................................................................................................................... 2 µs
1 Combined low and high widths must equal or exceed minimum SCLK period.
I2C Parameters
I2C Communication
Communication to the Model BPS125 is read only. To read the pressure counts, the master performs a read request by asserting a start
condition, sending the 7-bit address of the part (0x28), and sets the read/write bit. The master then waits for an acknowledgement. The
acknowledgement is sent by the pressure sensor along with 2 bits of status and bits 13:8 of the pressure counts, the master acknowledges the
first 8 bits, and the pressure sensor sends the remaining 8 bits of data. The master then does not acknowledge and sends a stop condition,
signaling the end of the transaction.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.


Features Features n 3.3 volt supply n Compensat ed digital output (I2C) n Ultra-low pr essure sensing (250 Pa) n Gauge and di fferential types n For use in clean, d ry air and non-corrosive gas enviro nments n RoHS compliant* Applications Industrial: n HVAC systems n Proce ss monitoring n Packaging automation **Medical Devices (low/medium risk): n Diagnostic equipment n Analysis equ ipment BPS125 Series - 12 mm Digital Low Pressure Sensor Electrical Charac teristics Supply Voltage (Vs).......... ....................................... ....................................... .................................. 3.0 V minimum, 3.3 V typical, 3.6 V maximum Supply Current @ 5 V.................. ....................................... ....................................... .................1.2 mA minimum, 2 mA t ypical, 3.5 mA maximum Performance Char acteristics Operating Temperature...... ....................................... ................................................................
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