I may be using a pressure sensor from freescale for a project but I don't understand 2 things in the datasheet.
1. The sensor has 6 pins and it isn't clear how 3 of the pins are handled. I'd be using the 2 port version described on page 10. Pins 1-3 are simple (Vout, gnd, and Vcc). Three of the other pins are designated for "V1", "V2", "Vex" but the datasheet doesn't define what those are. I found an example which used a similar sensor with a similar spec (from freescale) and these pins were left unconnected. Are V1, V2, and Vex standard names? Should I know what they are? Can I ignore them like in the example I found?
2. the data sheet describes how the sensor should be decoupled via capacitors. The input voltage has 2 capacitors on it, one 1 μF and the other 0.01μF in parallel. Why 2 capacitors of such different sizes? Does this pattern somehow smooth different kinds of fluctuations?
I've attached 2 images. One shows the info for #1 and the other for #2
1. The sensor has 6 pins and it isn't clear how 3 of the pins are handled. I'd be using the 2 port version described on page 10. Pins 1-3 are simple (Vout, gnd, and Vcc). Three of the other pins are designated for "V1", "V2", "Vex" but the datasheet doesn't define what those are. I found an example which used a similar sensor with a similar spec (from freescale) and these pins were left unconnected. Are V1, V2, and Vex standard names? Should I know what they are? Can I ignore them like in the example I found?
2. the data sheet describes how the sensor should be decoupled via capacitors. The input voltage has 2 capacitors on it, one 1 μF and the other 0.01μF in parallel. Why 2 capacitors of such different sizes? Does this pattern somehow smooth different kinds of fluctuations?
I've attached 2 images. One shows the info for #1 and the other for #2
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