32347833 Issue C FMA SERIES MicroForce Sensors, Compensated/Ampliefi d 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 speciefi d to maximize sensitivity and improve full scale force span and temperature system resolution/performance range. They are fully calibrated and Smaller package allows for space temperature compensated for sensor constrained applications offset, sensitivity, temperature effects, Robust design provides enhanced and nonlinearity using an on-board durability in applications where Application Specific Integrated Circuit overforce may exist (ASIC). Direct mechanical coupling Enhanced accuracy includes all FEATURES allows for easy interface with the errors due to force non-linearity, force Small form factor: 5 mm x 5 mm sensor, coupling with tubing, membrane hysteresis, and non-repeatability 0.20 in x 0.20 in or a plunger, providing repeatable Reduced Total Error Band enhances Accuracy: 2 %FSS typical performance and a reliable mechanical system performance 2 SPI- or I C-compatible digital output interface to the application. All products Digital output enhances performance Fully calibrated and temperature are designed and manufactured through reduced conversion compensated over a temperature according to ISO 9001 standards. These requirements and the convenience of range of 5C to 50C 41F to 122F products offer a more stable output direct interface to microprocessors Available in a wide variety of standard which is directly proportional to the force Diagnostic functions allow the user and configurable force ranges applied to the mechanically-coupled to determine if the sensor is working Overforce: 3X force range sphere. correctly by detecting if electrical paths Supply voltage: 3.3 Vdc typ. or 5.0 Vdc typ. are broken or shorted inside the sensor Low power consumption: 14 mW The FMA Series is available with pocket Selectable supply voltages provide Enhanced part-to-part repeatability tape and reel packaging. customers with design flexibility Enhanced reliability Stable, stainless steel sphere interface VALUE TO CUSTOMERS POTENTIAL APPLICATIONS Internal diagnostic functions available The FMA Series are designed to meet REACH and RoHS compliant the customers need for a compensated, MEDICAL ampliefi d force sensor which provides Infusion pumps digital outputs, a variety of force Ambulatory pumps The FMA Series joins the FSA Series, FSG Series, FSS sensing ranges, a small, cost-effective Enteral feeding pumps Series, FSS-SMT Series, TBF format, and enhanced durability and Kidney dialysis machines Series, and 1865 Series Force accuracy. The flexible design provides INDUSTRIAL Sensors. To view the entire multiple standard congfi urations over Load and compression sensing product portfolio, click here. a wide operating temperature range. Touch panels Switch replacement Robotic equipment Weight measurement Force/grip measuring equipmentMICROFORCE 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 50 800 kHz 2 I C 100 400 ESD susceptibility (human body model) 8 kV Storage temperature range -40 -40 85 185 C F 1 Overforce limit 3X force range 1 Repeated exposure to the overforce may cause permanent damage to the sensor. TABLE 2. OPERATING SPECIFICATIONS CHARACTERISTIC MINIMUM TYPICAL MAXIMUM UNIT 1, 2, 3 Supply voltage (Vsupply) : 3.3 Vdc 3.0 3.3 3.6 Vdc 5.0 Vdc 4.75 5.0 5.25 Supply current: 3.3 Vdc 2.8 3.9 mA 5.0 Vdc 3.9 4.6 Power input 20 mW 4 Operating temperature range -40 -40 85 185 C F 5 Compensated temperature range 5 41 50 122 C F Storage temperature range -40 -40 85 185 C F Startup time (power up to data ready) 3 ms Response time 0.42 0.84 ms 2 SPI/I C voltage level: low 20 V supply high 80 Pull up on SDA/MISO, SCL/SCLK, SS 1 kOhm 6 7 Accuracy 2 %FSS BFSL 8 Total Error Band 8 %FSS Output resolution 12 bits Long term stability 1.6 %FSS 1 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 25C. 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. 2 Sensing and Internet of Things