| AAS114A |
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PRELIMINARY LVDT Sensor Signal Conditioning and Interface The AAS114A is part of AAI’s new family of Sensor and Instrumentation products aimed, in this case, at Linear Variable Differential Transformer (LVDT) Interface requirements. The AAS114A contains all the elements needed for interface and in-system control of LVDTs. Working off up to an 18V supply, a SPI interface with an Enable function provides for control of the sensor oscillator voltage amplitude, while also providing adjustment of signal gain for the analog output. In addition, a comparator on-board is tied to a limit threshold set-point also settable from the SPI input. The on-board trimmed reference is accurate to within 10ppm. Outputs are available from an analog stage or in a digital format from a 10-Bit, 100k Sample ADC. A Register Output provides for checking of set parameters. The part is provided in a space efficient 20-Pin DFN, and is designed to be compliant with the requirement for operation over the automotive range of temperatures. Features 
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