MPR
SERIES
DESCRIPTION
The MPR Series is a very small
piezoresistive silicon pressure sensor
offering a digital output for reading
pressure over the specified full scale
pressure span and temperature range.
It is calibrated and compensated over a
specific temperature range for sensor
offset, sensitivity, temperature effects,
and non-linearity using an on-board
Application Specific Integrated Circuit
(ASIC). This product is designed to meet
the requirements of higher volume
medical (consumer and non-consumer)
devices, commercial appliance, and
industrial/HVAC applications.
32332628
Issue H
MicroPressure Board Mount Pressure Sensors
Compact, High Accuracy, Compensated/Amplified
• Meets IPC/JEDEC J-STD-020D.1
Moisture Sensitivity Level 1
requirements: Allows avoidance of
thermal and mechanical damage
during solder reflow attachment and/
or repair that lesser rated sensors may
incur; allows long floor life when stored
as specified (simplifying storage and
reducing scrap); eliminates lengthy
bakes prior to reflow, and allows for
lean manufacturing due to stability
and usability shortly after reflow.
• Meets food safety certification for
North America, Europe and Asia (see
Table 2).
FEATURES
• 5 mm x 5 mm [0.20 in x 0.20 in]
package footprint
• Calibrated and compensated
• 60 mbar to 2.5 bar | 6 kPa to 250 kPa |
1 psi to 30 psi
• 24-bit digital I
2
C or SPI-compatible output
• IoT (Internet of Things) ready interface
• Stainless steel pressure port
• Compatible with a variety of liquid media
• Absolute and gage pressure types
• Total Error Band after customer auto-
zero: As low as ±1.25 %FSS
• Compensated temperature range: 0ºC to
50ºC [32ºF to 122ºF]
• REACH and RoHS compliant
• Meets IPC/JEDEC J-STD-020D.1
Moisture Sensitivity Level 1
• Select sensors available on breakout
board for easy evaluation and testing
• Ultra-low power consumption (as low
as 0.01 mW typ. average power, 1 Hz
measurement frequency)
• Sensor materials have been tested and
certified for these food safety standards:
- NSF-169
- BPA Free
- LFGB
The MPR Series joins
an extensive line of
board mount pressure
sensors for potential use
in medical, industrial, and
consumer applications. To view
the entire product portfolio,
click here.
DIFFERENTIATION
• Application-specific design addresses
various application needs and
challenges.
• Digital output: Plug and play feature
enables ease of implementation and
system level connectivity.
• Total Error Band: Provides a more
comprehensive measurement of
performance over the compensated
temperature range, which minimizes
testing and calibrating every
sensor, thereby potentially reducing
manufacturing cost; improves sensor
accuracy and offers ease of sensor
interchangeability due to minimal part-
to-part variation. (See Figure 1.)
POTENTIAL APPLICATIONS
• Consumer medical: Non-invasive
blood pressure monitoring, negative-
pressure wound therapy, breast pumps,
mobile oxygen concentrators, airflow
monitors, CPAP water tanks, and
medical wearables
• Non-consumer medical: Invasive blood
pressure monitors, ambulatory blood
pressure measurement
• Industrial: Air braking systems, gas and
water meters
• Consumer: Coffee machines,
humidifiers, air beds, washing
machines, dishwashers
VALUE TO CUSTOMERS
• Very small form factor: Enables
portability by addressing weight, size,
and space restrictions; occupies less
area on the PCB.
• Wide pressure ranges simplify use.
• Enhances performance: Output
accelerates performance through
reduced conversion requirements and
direct interface to microprocessors.
• Value solution: Cost-effective, higher
volume solution with configurable
options.
MICROPRESSURE BOARD MOUNT PRESSURE SENSORS,
MPR SERIES
Table of Contents
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Power Consumption and Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Product Nomenclature and Order Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pressure Port/Range/Reference Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pressure Range Specifications:
60 mbar to 2.5 bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 kPa to 250 kPa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1 psi to 30 psi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
0 mmHg to 300 mmHg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1 .0
2 .0
3 .0
4 .0
5 .0
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
PINOUT AND FUNCTIONALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
START-UP TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
POWER SUPPLY REQUIREMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
REFERENCE CIRCUIT DESIGN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 I
2
C and SPI Circuit Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 Bypass Capacitor Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 .0
I
2
C COMMUNICATIONS
6.1 I
2
C Bus Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.2 I
2
C Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.3 I
2
C Sensor Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.4 I
2
C Pressure Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.5 I
2
C Status Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.6 I
2
C Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.6.1 Output Measurement Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.6.2 I
2
C Sensor Address of 0x18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.7 I
2
C Timing and Level Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7 .0
SPI COMMUNICATIONS
7.1 SPI Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7.2 SPI Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7.3 SPI Pressure Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7.4 SPI Status Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.5 SPI Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.6 SPI Timing and Level Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8 .0
MPR SERIES DIGITAL OUTPUT PRESSURE CALCULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Long Port Dimensions and Recommended PCB Pad Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Short Port Dimensions and Recommended PCB Pad Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Tape and Reel Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Reflowable Protective Silicone Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Reflowable Protective Silicone Cap Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Recommended Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Recommended O-Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .back
2
sensing.honeywell.com
MICROPRESSURE BOARD MOUNT PRESSURE SENSORS,
MPR SERIES
FIGURE 1 . TEB COMPONENTS FOR THE MPR SERIES
Total Error Band (TEB) is a single specification that includes
the major sources of sensor error. TEB should not be
confused with accuracy, which is actually a component of
TEB. TEB is the worst error that the sensor could experience.
Honeywell uses the TEB specification in its datasheet
because it is the most comprehensive measurement of
a sensor’s true accuracy. Honeywell also provides the
accuracy specification in order to provide a common
comparison with competitors’ literature that does not use
the TEB specification.
Many competitors do not use TEB—they simply specify
the accuracy of their device. Their accuracy specification,
however, may exclude certain parameters. On their
datasheet, the errors are listed individually. When combined,
the total error (or what would be TEB) could be significant.
TABLE 1. ABSOLUTE MAXIMUM RATINGS
1
CHARACTERISTIC
Supply voltage (V
supply
)
Voltage on any pin
ESD susceptibility (human body model)
Storage temperature
Soldering peak reflow temperature and time
1
Sources of Error
Offset
Full Scale Span
Pressure Non-Linearity
Pressure Hysteresis
Pressure Non-Repeatability
Thermal Effect on Offset
Thermal Effect on Span
Thermal Hysteresis
Accuracy
BFSL
Total
Error
Band
MIN .
-0.3
-0.3
—
-40 [-40]
MAX .
3.6
V
supply
+ 0.3
4
85 [185]
15 s max. at 250°C [482°F]
UNIT
Vdc
V
kV
°C [°F]
Absolute maximum ratings are the extreme limits the device will withstand without damage.
TABLE 2. ENVIRONMENTAL SPECIFICATIONS
CHARACTERISTIC
Humidity:
external surfaces
internal surfaces
Vibration
Shock
Solder reflow
Certification (food grade
gel coating option)
PARAMETER
0 %RH to 95 %RH, non-condensing
0 %RH to 100 %RH, condensing
10 g, 10 Hz to 2 kHz
50 g, 6 ms duration
J-STD-020-D.1 Moisture Sensitivity Level 1 (unlimited shelf life when stored at <30°C/85 %RH)
NSF-169, BPA Free, LFGB
TABLE 3. WETTED MATERIALS
COMPONENT
Port
Adhesives
Electronic components
Metal gel ring
MATERAL
304 stainless steel
epoxy
silicon, glass, gold, aluminum
304 stainless steel
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MICROPRESSURE BOARD MOUNT PRESSURE SENSORS,
MPR SERIES
TABLE 4. SENSOR PRESSURE TYPES
PRESSURE TYPE
Absolute
Gage
DESCRIPTION
Output is proportional to the difference between applied pressure and a built-in vacuum reference.
Output is proportional to the difference between applied pressure and atmospheric (ambient) pressure.
TABLE 5. OPERATING SPECIFICATIONS
CHARACTERISTIC
Supply voltage (V
supply
):
1
Current consumption:
I
2
C sleep/standby mode
SPI sleep/standby mode
Power consumption
Operating temperature range
2
Compensated temperature range
3
Startup time (power up to data ready)
Data rate (assumes command AA
HEX
)
I
2
C/SPI voltage level:
low
high
Pull up on MISO, SCLK, SS, MOSI
Accuracy
4
Resolution:
transfer function A
transfer function B
transfer function C
1
MIN .
1.8
3.0
13.0
—
-40 [-40]
0 [32]
—
161
—
80
1
—
14.0
13.5
14.0
TYP .
3.3
33.8
43.8
10
—
—
—
204
—
—
—
—
—
—
—
MAX .
3.6
211
221.0
—
85 [185]
50 [122]
2.5
—
20
—
—
±0.25
—
—
—
UNIT
Vdc
nA
nA
mW
°C [°F]
°C [°F]
ms
samples per second
%V
supply
kOhm
%FSS BFSL
5
bits
The sensor is not reverse polarity protected. Incorrect application of supply voltage or ground to the wrong pin may cause
Operating temperature range:
The temperature range over which the sensor will produce an output proportional to pressure.
Compensated temperature range:
The temperature range over which the sensor will produce an output proportional to pressure
Accuracy:
The maximum deviation in output from a Best Fit Straight Line (BFSL) fitted to the output measured over the pressure
Full Scale Span (FSS):
The algebraic difference between the output signal measured at the maximum (Pmax.) and minimum
electrical failure.
2
3
within the specified performance limits (Total Error Band).
4
range. Includes all errors due to pressure non-linearity, pressure hysteresis, and non-repeatability.
5
(Pmin.) limits of the pressure range. (See Figure 4 for pressure ranges.)
4
sensing.honeywell.com
MICROPRESSURE BOARD MOUNT PRESSURE SENSORS,
MPR SERIES
POWER CONSUMPTION AND STANDBY MODE
The sensor is normally in Standby Mode and is only turned on in response to a user command, thus minimizing power consumption.
Upon receiving the user command, the sensor wakes up from Standby Mode, runs a measurement in Active State, and automatically
returns to Standby Mode, awaiting the next command. The resulting sensor power consumption is a function of the sampling rate
(samples per second) as shown in Tables 6 and 7 and Figures 2 and 3.
TABLE 6. AVERAGE POWER CONSUMPTION AT 1.8 V
SUPPLY
(ASSUMES COMMAND AA
HEX
)
SAMPLING
RATE
(samples per second)
1
2
5
10
20
50
100
160
1
2
5
10
20
50
100
160
1
2
5
10
20
50
100
160
AVERAGE POWER
(mW)
ACTIVE TIME
(ms)
ACTIVE POWER
(mW)
IDLE TIME
(ms)
IDLE POWER
(mW)
Minimum Average Power
0.0068
0.0137
0.0341
0.0683
0.1366
0.3414
0.6829
1.0926
0.0094
0.0187
0.0468
0.0935
0.1870
0.4673
0.9345
1.4592
0.0129
0.0254
0.0630
0.1256
0.2508
0.6264
1.2524
2.0036
3.625
7.25
18.125
36.25
72.5
181.25
362.5
580
4.157
8.314
20.785
41.57
83.14
207.85
415.7
665.12
4.839
9.678
24.195
48.39
96.78
241.95
483.9
774.24
1.884
1.884
1.884
1.884
1.884
1.884
1.884
1.884
2.248
2.248
2.248
2.248
2.248
2.248
2.248
2.248
2.588
2.588
2.588
2.588
2.588
2.588
2.588
2.588
996.375
992.75
981.875
963.75
963.75
818.75
637.5
420
995.843
991.686
979.215
958.43
916.86
792.15
584.3
334.88
995.161
990.322
975.805
951.61
903.22
758.05
516.1
225.76
0.0000054
0.0000054
0.0000054
0.0000054
0.0000054
0.0000054
0.0000054
0.0000054
0.00006084
0.00006084
0.00006084
0.00006084
0.00006084
0.00006084
0.00006084
0.00006084
0.0003798
0.0003798
0.0003798
0.0003798
0.0003798
0.0003798
0.0003798
0.0003798
Typical Average Power
Maximum Average Power
FIGURE 2 . AVERAGE POWER CONSUMPTION VS SAMPLING RATE AT 1 .8 V
SUPPLY
Average Power Consumption (mW)
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
0
10
20
30
40
50
60
70
80
90
100 110 120 130 140 150 160
Maximum average power (mW)
Typical average power (mW)
Minimum average power (mW)
Sampling Rate (samples per second)
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