Hi Folks,
Need some advice on voltage translation. I have a pressure transducer, output 1-6V. What I need is a circuit to simply translate this to 0V-5V ( no gain initially ) for input into an ADC with possibly some over volt protection. I was under the impression I could use the AD623 to do the job simply, but after looking at the datasheet I'm not so sure. With a 5V supply to the AD623, if I apply 1V to one of the input pins and connect the other pin to the transducer that outputs 1V at 0psi then I should get 0V out of the amplifier, fine. But according to the datasheet ( graph of voltage output VS common mode input ) I can only expect a maximum of 2.5V output. Am I reading this correctly? If both inputs start off at 1V and the other increases, am I right in assuming that the common mode voltage in this case 1V? Another unkown is that will the AD623 allow an input of 6V when the supply is only 5V?
Thanks.
Need some advice on voltage translation. I have a pressure transducer, output 1-6V. What I need is a circuit to simply translate this to 0V-5V ( no gain initially ) for input into an ADC with possibly some over volt protection. I was under the impression I could use the AD623 to do the job simply, but after looking at the datasheet I'm not so sure. With a 5V supply to the AD623, if I apply 1V to one of the input pins and connect the other pin to the transducer that outputs 1V at 0psi then I should get 0V out of the amplifier, fine. But according to the datasheet ( graph of voltage output VS common mode input ) I can only expect a maximum of 2.5V output. Am I reading this correctly? If both inputs start off at 1V and the other increases, am I right in assuming that the common mode voltage in this case 1V? Another unkown is that will the AD623 allow an input of 6V when the supply is only 5V?
Thanks.
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