CPS131
Consensic
Data Sheet
Water ResistantPressure Sensor
Rev│4.0
November 2014
DAT-0006
CPS131
Consensic
Water Resistant Pressure Sensor
Water Resistant
Overview
The CPS131SiP (System-in-a-Package) solution comprises of
aresistive bridge type pressure sensor and an18-bit calibration
math DSP for high resolution and accurate pressure
measurements. The fully calibrated pressure and temperature
compensated digital output makes the CPS131 solution simple to
use.The ADC comprise of an internal calibration logic that provides
accurate pressure and temperature measurements to the
application via the SPI or I²C interface.There is no need to
separately download internal calibration coefficients and have the
host micro-controller conduct complicated compensation
calculations.
Applications
Sports Watches
Altimeters
Portable and Stationary Barometers
Weather Stations
GPS Applications
Benefits
Water Protection up to 100m
Gel Filled Stainless Steel Ring for Sealing
Low Power Consumption. Excellent for Battery and Other
Low-Power Applications
External Clock not Required
Features
Factory Calibrated Pressure and Temperature Sensor
Supply Voltage: 1.8V to 3.6V
Sleep State Current:
DAT-0006, Rev 4.0
© 2014 Consensic, Inc. All rights reserved. The information contained in this document is subject to changes without
notice.
Page 15 of 21
CPS131
Consensic
Water Resistant Pressure Sensor
Water Resistant
3.1.1.4
SPI MEASUREMENT REQUEST
The SPI MR is used to wake up the device in Sleep mode and start a complete Pressure measurement and Temperature
st
nd
rd
measurement cycle. The SPI command request always consists of 3 bytes. The 1 byte is 0xAC, the 2 and 3 bytes are all filled
with 0s.
FIGURE 6: SPI MEASUREMENT REQUEST COMMAND (ACHEX)
FIGURE 7: SPI MEASUREMENT REQUEST FOLLOWED BY GET DATA COMMAND
DAT-0006, Rev 4.0
© 2014 Consensic, Inc. All rights reserved. The information contained in this document is subject to changes without
notice.
Page 16 of 21
CPS131
Water Resistant Pressure Sensor
Consensic
Water Resistant
4 CALCULATING OUTPUT
After retrieving the data, the compensated output can be calculated by following the equations below.
4.1
PRESSURE OUTPUT
An example of the 16-bit compensated pressure with a full scale range of 30 to 120kPa can be calculated as follows:
Pressure [kPa] = [(Pressure High Byte [15:8] x 256 + Pressure Low Byte [7:0]) / 2^16] x 90 + 30
4.2
TEMPERATURE OUTPUT
The 16-bit compensated temperature can be calculated as follows:
Temperature [°C] = [(Temperature High Byte [15:8] x 256 + Temperature Low Byte [7:0]) / 2^16] x 150 – 40
DAT-0006, Rev 4.0
© 2014 Consensic, Inc. All rights reserved. The information contained in this document is subject to changes without
notice.
Page 17 of 21
CPS131
Water Resistant Pressure Sensor
Consensic
Water Resistant
5 PACKAGE AND ASSEMBLY
The CPS131 is available in a SMD package on a ceramic substrate.
5.1
MECHANICAL DRAWING
DAT-0006, Rev 4.0
© 2014 Consensic, Inc. All rights reserved. The information contained in this document is subject to changes without
notice.
Page 18 of 21
CPS131
Water Resistant Pressure Sensor
Consensic
Water Resistant
5.2
SOLDERING CONDITIONS
DAT-0006, Rev 4.0
© 2014 Consensic, Inc. All rights reserved. The information contained in this document is subject to changes without
notice.
Page 19 of 21
CPS131
Consensic
Water Resistant Pressure Sensor
TABLE4:Water Resistant
PACKAGE REFLOW TEMPERATURE
PARAMETER
Soldering Peak Temperature
CONDITIONS
Less than 30 seconds
(JEDEC-STD-020 Standard)
MIN
TYP
MAX
UNITS
260
°C
6 DOCUMENT HISTORY
REVISION
0.1
0.2
1.0
2.0
3.0
4.0
DATE
15-JAN-2013
18-FEB-2013
06-MAY-2013
23-AUG-2013
08-AUG-2014
10-NOV-2014
DESCRIPTION
Preliminary
Corrected Temperature Calculation on Page 17
Production Release
Updated Mechanical Pin Out for SPI
Add The Detail Description of Power Consumption
2
Changed Part Number, Clarified I C/SPI Communication, General Formatting
DAT-0006, Rev 4.0
© 2014 Consensic, Inc. All rights reserved. The information contained in this document is subject to changes without
notice.
Page 20 of 21
CPS131
Water Resistant Pressure Sensor
Consensic
Water Resistant
7 DISCLAIMER
Information in this datasheet is provided solely to enable implementation and use of Consensic products. The specifications and
characteristics are subject to change without notice. Consensic reserves the right to make changes without further notice to any
products herein.
“Typical” parameters provided in this datasheet can and do vary in different applications and actual performance may vary over time.
Customers must validate all operating parameters for their application.
Consensic is not responsible for direct, indirect, incidental or consequential damages resulting from any defect, error or failure to
perform. In no event, regardless of cause, shall Consensic incur any liability for any damages of any kind, including, but not limited to,
any direct, indirect, special, incidental, punitive or consequential damages arising out of, resulting from, or any way connected to the
use of the product, whether arising under breach of contract, tort (including negligence), strict liability or otherwise, and whether
based on this agreement or otherwise, even if advised of the possibility of such damages, and whether or not injury was sustained
by persons or property or otherwise; and whether or not loss was sustained from, or arose out of, the results of, the product, or any
services that may be provided by Consensic.
The customer assumes all responsibility and liability for proper and safe handling of the goods. It is the customer’s responsibility to
take any and allappropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be
regulatory compliant oragency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. Consensic assumes no liability for
applications assistance, customer product design, software performance, or infringement of patents or any other Intellectual
property rights of any kind.
DAT-0006, Rev 4.0
© 2014 Consensic, Inc. All rights reserved. The information contained in this document is subject to changes without
notice.
Page 21 of 21