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SCA21X0 Datasheet(PDF) 6 Page - VTI technologies |
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SCA21X0 Datasheet(HTML) 6 Page - VTI technologies |
6 / 35 page SCA8X0/21X0/3100 Series VTI Technologies Oy 6/35 www.vti.fi Doc. Nr. 82 694 00 C 1.3 Typical applications VTI Automotive Digital Accelerometer Platform is targeted to automotive applications with high stability requirements. Typical applications include but are not limited to • Electronic Stability Control (ESC) • Hill Start Assist (HSA) • Electronic Parking Brake (EPB) • Roll Over • Active Suspension • Inclination • Industrial applications 1.4 Functional Description Basic product concept of the VTI Automotive Digital Accelerometer Platform is a two chip solution consisting of a single sensing element and one ASIC inside a pre-molded 12-pin housing. The interface to the application is a four wire digital SPI interface. In single axis products there is also Pulse Width Modulation output available. In addition to the supply voltage filtering the component does not require any other components to be connected to the device. Block diagram of SCA8X0/SCA21X0/31X0 1.4.1 Sensing element The sensing element of the product is manufactured by using VTI Technologies proprietary bulk 3D-mems process enabling a robust, stable and low noise capacitive sensor. Depending on the product type and measurement direction the sensing element type and orientation inside the housing can vary. Single axis products are equipped with single axis sensing elements and multi axis products are equipped with multi axis sensing elements. 1.4.2 Interface IC The main functional blocks of the interface ASIC are the following: 1.4.3 Capacitance to voltage conversion The acceleration is causing a capacitance change inside the sensing element. The capacitance change can be detected by the ASIC analog interface. The capacitance information is converted into an analog voltage that can be further processed easily inside the ASIC. |
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Similar Description - SCA21X0 |
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