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Two 12-bit ADCs SPI Coding with ATmega128 MCU

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KlausST said:
Hi,

Honestly, I don't know how you decided to control the switch.....with the negative voltages...

Klaus
Click to expand...

Just to be on the safe side and to make things easier.

I am replacing the current SP4T switch with this one:
https://www.analog.com/en/products/rf-microwave/rf-switches/spst-spdt-sp3t-sp4t-sp6t-sp8t/adrf5040.html#product-overview

This switch requires a positive and negative supply voltages separately, but the input control pins V1 and V2 only require positive voltage to change the switch states. The snapshot is attached here:
2018-01-23_154119.png
 

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