sca100t VTI Hamlin, sca100t Datasheet
sca100t
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sca100t Summary of contents
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... Low temperature dependency, high resolution and low noise, together a with robust sensing element design, make the SCA100T the ideal choice for leveling instruments. The VTI inclinometers are insensitive to vibration, due to their over damped sensing elements, and can withstand mechanical shocks 20000 g ...
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... TABLE OF CONTENTS The SCA100T Dual Axis Inclinometer Series .........................................................................1 Features................................................................................................................................................1 Applications .........................................................................................................................................1 Table of Contents .....................................................................................................................2 1 Electrical Specifications .....................................................................................................3 1.1 Absolute Maximum Ratings......................................................................................................3 1.2 Performance Characteristics ....................................................................................................3 1.3 Electrical Characteristics ..........................................................................................................4 1.4 SPI Interface DC Characteristics ..............................................................................................4 1.5 SPI Interface AC Characteristics ..............................................................................................4 1.6 SPI Interface Timing Specifications .........................................................................................5 1.7 Electrical Connection ................................................................................................................6 1.8 Typical Performance Characteristics.......................................................................................6 1.8.1 Additional External Compensation ....................................................................................... 7 2 Functional Description .......................................................................................................9 2 ...
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... Electrical Specifications The SCA100T product family comprises two versions, the SCA100T-D01 and the SCA100T-D02 that differ in measurement range. The product version specific performance specifications are listed in the table SCA100T performance characteristics below. common with both versions. Vdd=5.00V and ambient temperature unless otherwise specified. ...
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... HYST > -1mA < < V < I MISO LEAK Vdd Condition @500kHz @500kHz Subject to changes Doc. nr. 8261800 SCA100T Series Typ Max. Units 5.0 5. +125 °C kOhm Min Typ Max Vdd+0.3 -0.3 1 0.23*Vdd ...
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... MISO < Load capacitance at MISO < Load capacitance at MISO < HOL MSB in DATA in T VAL2 MSB out DATA out Subject to changes Doc. nr. 8261800 SCA100T Series Symbol Min. Typ. Max. T 120 LS1 T 120 LS2 SET T ...
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... VDD 1.8 Typical Performance Characteristics Typical offset and sensitivity temperature dependencies of the SCA100T are presented in following diagrams. These results represent the typical performance of SCA100T components. The mean value and 3 sigma limits (mean ± 3× standard deviation) and specification limits are presented in following diagrams. The 3 sigma limits represents 99.73% of the SCA100T population. ...
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... Figure 5. Typical temperature dependency of SCA100T sensitivity 1.8.1 Additional External Compensation To achieve the best possible accuracy, the temperature measurement information and typical temperature dependency curves can be used for SCA100T offset and sensitivity temperature dependency compensation. The equation of fitted 3 compensation is: = − Offcorr . 0 0000006 ...
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... The typical offset and sensitivity temperature dependency after external compensation is shown in the pictures below. Temperature dependency of externally compensated 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 -40 -20 Figure 6. The temperature dependency of an externally compensated SCA100T offset Temperature dependency of externally compensated 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 -40 -20 Figure 7. The temperature dependency of an externally compensated SCA100T sensitivity VTI Technologies Oy www ...
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... Sensitivit where: Offset = output of the device at 0° inclination position, Sensitivity is the sensitivity of the device and V is the output of the SCA100T. The nominal offset is 2.5 V and the sensitivity is 4 Dout V/g for the SCA100T-D01 and 2 V/g for the SCA100T-D02. Angles close to 0° inclination can be estimated quite accurately with straight line conversion but for the best possible accuracy, arcsine conversion is recommended to be used ...
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... Ratiometric output means that the zero offset point and sensitivity of the sensor are proportional to the supply voltage. If the SCA100T supply voltage is fluctuating the SCA100T output will also vary. When the same reference voltage for both the SCA100T sensor and the measuring part (A/D- converter) is used, the error caused by reference voltage variation is automatically compensated for ...
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... CSB. This reinitializes the serial communication. • data transfer to MOSI continues immediately after receiving the command in all cases where data written to SCA100T’s internal registers • data transfer out from MISO starts with the falling edge of SCK immediately after the last bit of the SPI command is sampled in on the rising edge of SCK • ...
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... − ⎞ D LSB ° ⎟ out @ ⎟ ⎠ Sens LSB/g RDAX or RDAY) . (SCA100T-D01: 1638, SCA100T-D02: 819) Subject to changes Doc. nr. 8261800 SCA100T Series ...
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... ST pins (pins 9 & 10) of SCA100T. The self test Input high voltage level is 4 – Vdd+0.3 V and input low voltage level is 0.3 – The self test function must not be activated for both channels at the same time. ...
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... Typ. 25 2.7 Temperature Measurement The SCA100T has an internal temperature sensor, which is used for internal offset compensation. The temperature information is also available for additional external compensation. The temperature sensor can be accessed via the SPI interface and the temperature reading is an 8-bit word (0…255). The transfer function is expressed with the following formula: ...
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... The SCA100T has a ratiometric output. To get the best performance use the same reference voltage for both the SCA100T and Analog/Digital converter. Use low pass RC filters with 5.11 kΩ and 10nF on the SCA100T outputs to minimize clock noise. Locate the 100nF power supply filtering capacitor close to VDD pin 12. Use as short a trace length as possible ...
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... RoHS compliance: Co-planarity error The part weights Figure 16. VTI Technologies Oy www.vti.fi Recommended PCB footprint Copper Nickel followed by Gold JEDEC standard: JESD22-B102-C RoHS compliant lead free component. 0.1mm max. <1.2 g Mechanical dimensions of the SCA100T (Dimensions in mm) Subject to changes Doc. nr. 8261800 SCA100T Series 16/18 Rev.A ...
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... Reflow Soldering The SCA100T is suitable for Sn-Pb eutectic and Pb- free soldering process and mounting with normal SMD pick-and-place equipment. Figure 17. Recommended SCA100T body temperature profile during reflow soldering. Ref. IPC/JEDEC J-STD-020B. Profile feature Average ramp-up rate (T Preheat Temperature min (T - Temperature max (T - Time (min to max) (ts) ...
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... Cailun Lu Pudong New Area 201203 Shanghai P.R. China Tel. +86 21 5132 0417 Fax +86 21 513 20 416 Subject to changes Doc. nr. 8261800 SCA100T Series USA VTI Technologies, Inc. One Park Lane Blvd. Suite 804 - East Tower Dearborn, MI 48126 USA Tel. +1 313 425 0850 Fax +1 313 425 0860 E-mail sales@vtitechnologies ...