CD Datasheet, CD Single 8-channel Multiplexer/Demultiplexer Datasheet, buy CD Data sheet acquired from Harris Semiconductor .. CD MHz. VOS at Any Channel. MHz. Electrical Specifications Common Conditions Here: If. CDBMS, CDBMS and CDBMS analog multi- plexers/ demultiplexers are digitally controlled analog switches having low ON impedance and very.
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I am guessing this should work: In general how much current variation can i expect? The playground is a publicly-editable wiki about Arduino. See comment above with idea to replace 8 current sources by one current source and one But you can read and write to the pins quite fast. Then B measure voltage drop across PT Is leakage current going to be a problem?
Each of these pins have to be connected to one digital out pin on the Arduino. The remaining circuit consists of routing each of this 1mA to each pt I worked on Bimpelrekkie ‘s as well as Spehro Pefhany’s answers. The playground is a publicly-editable wiki about Arduino. The current will always be 1 mA whatever value the resistor has. If any errors or possible limitations please do let me know.
Also i did not yet think about protections to the inputs of the board, a very valid point. This is dattasheet because 1mA is passing through the 1st MUX. Since it appears that the can support the 1mA what you could do to avoid Ron influencing the measurement is using separate multiplexers, one to multiplex the current feed it to a sensor the other to sense the voltage.
As long as there is enough voltage headroom across the current source circuit so that it is able to actually make that current flow then any extra series resistance doesn’t matter. Post as a guest Name. One can look dafasheet the schematic and explanations here.
CD Datasheet(PDF) – TI store
Or reed relays could be another way? Please correct me if i’m wrong in this.
Since it expands i cant post it as a datasyeet. There is no delay needed between selecting and read or writing the pin. Am i wrong or OK in this regard?
Bimpelrekkie thanks for clarifying.
CD Datasheet Fairchild Semiconductor pdf data sheet FREE from
I checked with local supplier and they dont have this available. So the problem is clearer now: Instead i though i could make a differential measurement of voltage drop across the first two leads of the Datassheet using A0 and A1 to get lead resistance. The multiplexers would then be switched to the same input at the same time.
I could order online but it would take weeks and cost a lot import duties to india.