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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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There is no delay needed between selecting and read or writing the pin.

CD Datasheet(PDF) – National Semiconductor (TI)

But they are now activated through a HC IC as below. Spehro Pefhany k 4 Futhermore, the is able to work with analog values; in the case of the Arduino, you are able to use the analog inputs with a voltage between V and route them to an Analog-In Pin on your Arduino.

It is not possible to read or write more than one pin on the at the same time, because you can only select one pin at a time. For more info pleae look at this Forum Post. It may affect the actual current.

A multiplexer or demultiplexer enables you to expand the in-and outputs on your Arduino board. A multiplexer or demultiplexer enables you to expand the in-and outputs on your Datsaheet board. Arduino on other Chips. If some other idea could be evolved, it would be great!

Datasheets search archive of electronic components datasheets

I checked with local supplier datashewt they dont have this available. I will hand pick the resistors but what about temperature compensation? The tolerance of the resistors won’t affect the stability of the current from your current source.


I already thank Bimpelrekkie and Spehro Pefhany for helping in such short period. Rds on is huge as much as ohmsand varies with supply voltage, input voltage and temperature.

If you have an ideal current source of 1 mA in series with a resistor, what will the current vd4051 Each of these pins have to be connected to one digital out pin on the Arduino. Does this make sense? For more info pleae look at this Forum Post. Please correct me if i’m wrong in this. Since i need to make a differential measurement between the first two leads of the pt while avoiding rds on cdd4051 HC, i attached A0 of the ADC directly to the first wire through a schottky diode.

One can look at the schematic and explanations here. It is not possible to read or write more than one pin on the at the same time, because you can only select one pin at a time. The diode prevents the activation of other PT channels not activated by HC Thanks a lot for responding so far. As long as datadheet is enough voltage headroom across the current source circuit so that it is able to actually make that current flow then any adtasheet series resistance doesn’t matter.

Yes, you can do that perhaps not with the CD and perhaps not with that particular 1mA current ratasheet, because of voltage compliancehowever the only point of ADC input A0 is to check that the current source is not outside compliance voltage. For current source, i have added 8 of these, each giving 1mA as per Bimpelrekkie.


Arduino Playground –

Sources for Electronic Parts. Neither ddatasheet i post as an edit, i guess because it is an answer of sort, a comprehensive one. This i presume will help make a better differential measurement at the ADC A2 and A3 while avoiding any current passage through HC The multiplexers would then be switched to the same input at the same time.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Additionally i need lead wire compensation. Now my problems are: If you use the as datasheeet Multiplexer: 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.


Then B measure voltage drop across PT The on resistance will vary over almost anything like cc4051 voltage and temperature. Related Hardware and Initiatives. If you use the as a Multiplexer: Sign up using Email and Password. I will take Sephro’s suggestion of HC I am only now interested in 3-wire PT sensors as these are what available locally at affordable prices.

Is leakage current going to be a problem? Here is the plan: