FMA SERIES
32347833
Issue C
MicroForce Sensors, Compensated/Amplified
DESCRIPTION
DIFFERENTIATION
The FMA Series are piezoresistive-based
• Multiple force ranges allow the
force sensors offering a digital output
customer to choose the force range
for reading force over the specified
to maximize sensitivity and improve
full scale force span and temperature
system resolution/performance
range. They are fully calibrated and
temperature compensated for sensor
offset, sensitivity, temperature effects,
and nonlinearity using an on-board
Application Specific Integrated Circuit
(ASIC). Direct mechanical coupling
• Smaller package allows for space
constrained applications
• Robust design provides enhanced
durability in applications where
overforce may exist
• Enhanced accuracy includes all
allows for easy interface with the
errors due to force non-linearity, force
sensor, coupling with tubing, membrane
hysteresis, and non-repeatability
or a plunger, providing repeatable
performance and a reliable mechanical
interface to the application. All products
• Reduced Total Error Band enhances
system performance
• Digital output enhances performance
are designed and manufactured
through reduced conversion
according to ISO 9001 standards. These
requirements and the convenience of
products offer a more stable output
direct interface to microprocessors
which is directly proportional to the force
• Diagnostic functions allow the user
applied to the mechanically-coupled
to determine if the sensor is working
sphere.
correctly by detecting if electrical paths
The FMA Series is available with pocket
are broken or shorted inside the sensor
tape and reel packaging.
VALUE TO CUSTOMERS
• Selectable supply voltages provide
customers with design flexibility
The FMA Series are designed to meet
POTENTIAL APPLICATIONS
the customer’s need for a compensated,
MEDICAL
amplified force sensor which provides
• Infusion pumps
digital outputs, a variety of force
• Ambulatory pumps
sensing ranges, a small, cost-effective
• Enteral feeding pumps
format, and enhanced durability and
• Kidney dialysis machines
accuracy. The flexible design provides
INDUSTRIAL
multiple standard configurations over
a wide operating temperature range.
• Load and compression sensing
• Touch panels
• Switch replacement
• Robotic equipment
• Weight measurement
• Force/grip measuring equipment
FEATURES
• Small form factor: 5 mm x 5 mm
[0.20 in x 0.20 in]
• Accuracy: ±2 %FSS typical
• SPI- or I2C-compatible digital output
• Fully calibrated and temperature
compensated over a temperature
range of 5°C to 50°C [41°F to 122°F]
• Available in a wide variety of standard
and configurable force ranges
• Overforce: 3X force range
• Supply voltage: 3.3 Vdc typ. or 5.0 Vdc typ.
• Low power consumption: 14 mW
• Enhanced part-to-part repeatability
• Enhanced reliability
• Stable, stainless steel sphere interface
• Internal diagnostic functions available
• REACH and RoHS compliant
The FMA Series joins the
FSA Series, FSG Series, FSS
Series, FSS-SMT Series, TBF
Series, and 1865 Series Force
Sensors. To view the entire
product portfolio, click here.
MICROFORCE SENSORS, FMA SERIES
TABLE 1. ABSOLUTE MAXIMUM SPECIFICATIONS
CHARACTERISTIC
MINIMUM
TYPICAL
MAXIMUM
UNIT
Supply voltage
-0.3
—
6.0
Vdc
Voltage on any pin
-0.3
—
Vsupply + 0.3
V
Digital clock frequency:
SPI
I2C
50
100
—
800
400
kHz
8
—
—
kV
-40 [-40]
—
85 [185]
ESD susceptibility (human body model)
Storage temperature range
Overforce limit
—
—
Repeated exposure to the overforce may cause permanent damage to the sensor.
°C °[F]
3X force range
—
1
1
TABLE 2. OPERATING SPECIFICATIONS
CHARACTERISTIC
MINIMUM
TYPICAL
MAXIMUM
UNIT
3.0
4.75
3.3
5.0
3.6
5.25
Vdc
—
—
2.8
3.9
3.9
4.6
mA
—
20
—
mW
-40 [-40]
—
85 [185]
°C °[F]
5 [41]
—
50 [122]
°C °[F]
-40 [-40]
—
85 [185]
°C °[F]
Startup time (power up to data ready)
—
—
3
ms
Response time
—
0.42
0.84
ms
SPI/I2C voltage level:
low
high
—
80
—
—
20
—
Vsupply
Pull up on SDA/MISO, SCL/SCLK, SS
1
—
—
kOhm
Accuracy
—
±2
—
%FSS7 BFSL
Total Error Band8
—
—
±8
%FSS
Output resolution
12
—
—
bits
Long term stability
—
±1.6
—
%FSS
Supply voltage (Vsupply)1, 2, 3:
3.3 Vdc
5.0 Vdc
Supply current:
3.3 Vdc
5.0 Vdc
Power input
Operating temperature range
4
Compensated temperature range
5
Storage temperature range
6
Sensors are either 3.3 Vdc or 5.0 Vdc based on the catalog listing selected.
2
Ratiometricity of the sensor (the ability of the device output to scale to the supply voltage) is achieved within the specified
operating voltage.
3
The sensor is not reverse polarity protected. Incorrect application of supply voltage or ground to the wrong pin may cause
electrical failure.
4
Operating temperature range: The temperature range over which the sensor will produce an output proportional to force.
5
Compensated temperature range: The temperature range over which the sensor will produce an output proportional to force
within the specified performance limits.
6
Accuracy: The maximum deviation in output from a Best Fit Straight Line (BFSL) fitted to the output measured over the force
range with single load-unload cycle at 25°C. Includes all errors due to force non linearity, force hysteresis, and non repeatability.
7
Full Scale Span (FSS): The algebraic difference between the output voltage at full scale force and the output at zero force.
8
Total Error Band (TEB): Combined error from calibration, accuracy and temperature effects over the compensated temperature
range at 5.0 V from 20 %FSS to 80 %FSS.
1
2
Sensing and Internet of Things
MICROFORCE SENSORS, FMA SERIES
TABLE 3. ENVIRONMENTAL SPECIFICATIONS
CHARACTERISTIC
PARAMETER
Humidity
0% to 95% RH, non-condensing
Vibration
MIL-STD-202, Method 214, Condition 1F (20.71 Gms)
Shock
MIL-STD-202, Method 213, Condition A (50 G)
Life
1 million full scale force cycles minimum
Life may vary depending on specific application in which the sensor is utilized.
1
1
TABLE 4. MATERIALS
COMPONENT
MATERIAL1
Covers
liquid crystal polymer
Sphere contact element
stainless steel 440C
Substrate
FR4
Adhesives
epoxy, silicone
Electronic components
Contact Honeywell customer service for detailed material information.
silicon, glass, solder
1
FIGURE 1. TRANSFER FUNCTION LIMITS
Compensated Force Range
Output (% 214 Counts)
100
Ideal
+8% Total Error Band
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
Fmin.
Output (% of 214 counts) =
5
Force
6
7
8
9
10
Fmax.
60%
x (Forceapplied) + 20%
Forcerange
Sensing and Internet of Things
3
MICROFORCE SENSORS, FMA SERIES
FIGURE 2. NOMENCLATURE AND ORDER GUIDE
For example, FMAMSDXX025WCSC3 defines an FMA Series Force Sensor, compensated/amplified,
mechanically coupled, sphere contact element, sensor short and open diagnostics, 25 N force range,
force unit in N, compression force type, SPI digital output, 20% to 80% transfer function, 3.3 Vdc
supply voltage1
FM
A
M
MicroForce Type
Sensors
A
S
D
Coupling Contact
Element
Compensated/
amplified
Option
Code
0252
Option
Code 1
N No diagnostics
D Sensor short and open diagnostics
W
Force
Range
XX Future placeholder
S Sphere
M Mechanical
XX
Force
Unit
C
Force
Type
W Newton (N)
005 5 (Newtons)
015 15 (Newtons)
025 25 (Newtons)
S
C Compression
Output
S
2
3
4
5
6
7
SPI
I2C, Address 0x28
I2C, Address 0x38
I2C, Address 0x48
I2C, Address 0x58
I2C, Address 0x68
I2C, Address 0x78
C3
3
Transfer
Function
Supply
Voltage
3 3.3 V +10%
5 5.0 V +5%
A 10% to 90%
C 20% to 80%
Custom configurations are available upon request. Please contact Honeywell Sales.
Three characters specify the desired force level; allowable characters are the numbers 0 through 9. See Table 5 for currently configurable force ranges.
3
For other available transfer functions, contact Honeywell Customer Service.
1
2
Note: Breakout boards, designed for use with the Honeywell SEB002 Sensor Evaluation Kit, are available with the FMA Series sensor already mounted. Please contact
your Honeywell representative for details.
TABLE 5. FMA SERIES AVAILABILITY1
CATALOG LISTING
FORCE
RANGE
FMAMSDXX005WCSC3
OUTPUT
SPI
FMA Series Force Sensor, compensated/amplified, mechanically
coupled, sphere contact element, sensor short and open
diagnostics, 5 N force range, compression force type, SPI digital
output, 20% to 80% transfer function, 3.3 V ±10% supply voltage
I2C, address 0x28
FMA Series Force Sensor, compensated/amplified, mechanically
coupled, sphere contact element, sensor short and open
diagnostics, 5 N force range, compression force type, I2C digital
output, address 0x28, 20% to 80% transfer function, 3.3 V ±10%
supply voltage
SPI
FMA Series Force Sensor, compensated/amplified, mechanically
coupled, sphere contact element, sensor short and open
diagnostics, 15 N force range, compression force type, SPI digital
output, 20% to 80% transfer function, 3.3V ±10% supply voltage
I2C, address 0x28
FMA Series Force Sensor, compensated/amplified, mechanically
coupled, sphere contact element, sensor short and open
diagnostics, 15 N force range, compression force type, I2C digital
output, address 0x28, 20% to80% transfer function, 3.3 V ±10%
supply voltage
SPI
FMA Series Force Sensor, compensated/amplified, mechanically
coupled, sphere contact element, sensor short and open
diagnostics, 25 N forcerange, compression force type, SPI digital
output, 20% to 80% transfer function, 3.3 V ±10% supply voltage
I2C, address 0x28
FMA Series Force Sensor, compensated/amplified, mechanically
coupled, sphere contact element, sensor short and open
diagnostics, 25 N force range, compression force type, I2C digital
output, address 0x28, 20% to 80% transfer function, 3.3 V ±10%
supply voltage
5N
FMAMSDXX005WC2C3
FMAMSDXX015WCSC3
15 N
FMAMSDXX015WC2C3
FMAMSDXX025WCSC3
25 N
FMAMSDXX025WC2C3
1
4
DESCRIPTION
These catalog listings are production released and are readily available. Other configurations per Figure 2 are possible; however,
minimum order quantity thresholds and NRE may apply. Please consult the factory.
Sensing and Internet of Things
MICROFORCE SENSORS, FMA SERIES
FIGURE 3. SENSOR MOUNTING DIMENSIONS (FOR REFERENCE ONLY: MM/[IN].)
,
TABLE 6. PINOUT
,
PIN
1
2
3
4
5
6
,
,
,
,
,
SPI
VS
SS
GND
SCLK
MISO
NC
TABLE 7. SPHERE FORCE VS HEIGHT
,
Sphere height
(See Table 7.)
FUNCTION
I2 C
VS
NC
GND
SCL
SDA
NC
,
FORCE
(N)
SPHERE HEIGHT (MM)
5
15
25
0,293 ±0,075
0,393 ±0,075
0,483 ±0,075
,
Solder Pad Layout
(viewed from top)
Recommended Land Pattern
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Sensing and Internet of Things
5
MICROFORCE SENSORS, FMA SERIES
FIGURE 4. REEL MOUNTING DIMENSIONS (FOR REFERENCE ONLY: MM/[IN], ALL DIMENSIONS COMPLY WITH EIA-481-1.)
,
:
:
,
,
,
,
,
,
,
,
6
Sensing and Internet of Things
,
,
MICROFORCE SENSORS, FMA SERIES
FIGURE 5. TAPE MOUNTING DIMENSIONS (FOR REFERENCE ONLY: MM/[IN], ALL DIMENSIONS COMPLY WITH EIA-481-1.)
Note: FMA Series products are shipped in
tape and reel packaging with a Minimum
Order Quantity (MOQ) of 160 pieces. The
maximum tape and reel quantity is 960
pieces per reel.
CAUTION
ELECTROSTATIC
SENSITIVE
DEVICES
DO NOT OPEN OR HANDLE
EXCEPT AT A
STATIC FREE WORKSTATION
ESD SENSITIVITY:
CLASS 3B
Sensing and Internet of Things
7
ADDITIONAL MATERIALS
WARRANTY/REMEDY
The following associated literature is
available at sensing.honeywell.com:
Honeywell warrants goods of its
manufacture as being free of defective
materials and faulty workmanship
during the applicable warranty period.
Honeywell’s standard product warranty
applies unless agreed to otherwise by
Honeywell in writing; please refer to
your order acknowledgment or consult
your local sales office for specific
warranty details. If warranted goods
are returned to Honeywell during the
period of coverage, Honeywell will
repair or replace, at its option, without
charge those items that Honeywell,
in its sole discretion, finds defective.
The foregoing is buyer’s sole remedy
and is in lieu of all other warranties,
expressed or implied, including those
of merchantability and fitness for a
particular purpose. In no event shall
Honeywell be liable for consequential,
special, or indirect damages.
• Product range guide
• Technical notes:
-
MicroForce Sensor Coupling
- Overforce Design Considerations
- Force Sensor Diagnostics
- Digital Output Force Sensors I2C
Communications
-
Digital Output Force Sensors SPI
Communications
• Other technical notes
• Application notes
• Sell Sheets
• CAD Models
m WARNING
PERSONAL INJURY
DO NOT USE these products as safety
or emergency stop devices or in any
other application where failure of the
product could result in personal injury.
Failure to comply with these
instructions could result in death or
serious injury.
m WARNING
MISUSE OF
DOCUMENTATION
•
•
The information presented in this
product sheet is for reference
only. Do not use this document as
a product installation guide.
Complete installation, operation,
and maintenance information
is provided in the instructions
supplied with each product.
Failure to comply with these
instructions could result in death or
serious injury.
While Honeywell may provide
application assistance personally,
through our literature and the
Honeywell web site, it is buyer’s
sole responsibility to determine
the suitability of the product in the
application.
FOR MORE INFORMATION
Specifications may change without
notice. The information we supply is
believed to be accurate and reliable
as of this writing. However, Honeywell
assumes no responsibility for its use.
Honeywell Sensing and Internet of
Things services its customers through a
worldwide network of sales offices and
distributors. For application assistance,
current specifications, pricing or the
nearest Authorized Distributor, visit
sensing.honeywell.com or call:
Asia Pacific
+65 6355-2828
Europe
+44 1698 481481
USA/Canada
+1-302-613-4491
Honeywell
Sensing and Internet of Things
830 East Arapaho Road
Richardson, TX 75081
honeywell.com
32347833-C-EN | C | 03/20
© 2020 Honeywell International Inc. All rights reserved.