Hi, I want to get a V input into an Arduino from a VEGA BAR14 pressure sensor which outputs mA. Yes I know I can convert to V. Texas Instruments RCV Linear – Amplifiers – Instrumentation, OP Amps, Buffer Amps parts available at DigiKey. You can make a single-supply current loop receiver with the RCV by using its 10V reference as a pseudo ground. The RCV will convert a mA loop.
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Jan 8, TI is a global semiconductor design and manufacturing company. Ask a new question Ask a new question Cancel. In reply to user Jan 12, Ask a new question Ask a new question Cancel.
XRT117 and RCV420 shematic have some problems for out 4-20ma current
Do you have another question? The powersupply has 3 rails. Ah well I’m getting nowhere I’ll just bin it. TI is a global semiconductor design and manufacturing company. In the fifth post it mentions internal diodes and why they were not included in this device.
Use of the information on this site may require a license from a third party, or a license from TI. However, you have all of these nodes shorted to GND.
Use of the information on this site may require a license from a third party, or a license from TI. TI, Wanted to add – the neg power supply had disconnected from the RCV – which resulted in the positive reading with the simulator – as soon as I fixed that – was back to reading negative. This rc4v20 the correct connection polarity for a sourcing mA sensor.
RCV420: RCV420 – Output Reading Negative
I moved your post to a new thread because it started a new topic regarding the fault protection discussed in SBVA Sep 11, 4: See diagram in post 10 here. Colin, Thanks for the reply. Ask a new question Ask a tcv420 question Cancel. Locked Cancel Do you have another question? Wawa Shannon Member Posts: Menu Search through millions of questions and answers User.
If you have a related question, please click the ” Ask a related question ” button in the top right corner. Jan 8, 8: Go to Support forums.
RCV Datasheet pdf – Precision 4mA to 20mA CURRENT LOOP RECEIVER – Burr Brown
If I connect 12 to 10 as you have in the simulation; does that bias my output down by 1. Yes I know I can convert to V simply using a resistor. And yes also; my ‘load’ right now is just a voltmeter; I didn’t want to test this while tied to a processor input. Since it is basically still a difference amplifier if rcv402 change the polarity of the input signal then the output signal will change polarity as well.
If current is flowing the opposite was as intended – is this ‘normal’? We are glad that we were able to resolve this issue, and will now proceed to close this thread. You need a dual symetric 12volt regulated power supply for that chip.
We are glad that we were able to resolve this issue, and will now proceed to close this thread. The datasheet is here, but my knowledge is too limited to make sense of it: Go to Support forums. First to be clear there are internal ESD diodes between the output and crv420 supply voltage.
Content on this site may contain or be subject to specific guidelines or limitations on use. Using the RCV as in the datasheet:. This connection is the one that provides the The newly created question will be automatically linked to this question. Go to Support forums.
Thanks Again, John W. The newly created question will rcv4220 automatically linked to this question.
I copied the output voltage section of the specification sheet below. Jan 21,