MSP430FR6047: Question about circuit?

Hi David,

You would like to amplify the voltage of OUTPUT?

Acutally, for water meter, we think 3.3V/5V is enough normally. Why you need more high voltage here?

Thanks!

Best Regards

Johnson

Hi Johnson

You would like to amplify the voltage of OUTPUT?

=>The input/output gain using OPAMP will be configured to be output 10db and input 10db.
     Amplification using the FET will be configured to be at the level of 10V to 15V at the output stage.

Acutally, for water meter, we think 3.3V/5V is enough normally. Why you need more high voltage here?

=>Currently, our application uses software gain up to about 20 to 30 dB.
The reason is that the amplitude is measured ±600 at 30db at the 5V level as follows.
And it will be measured normally from about ±200 to 300.
Therefore, 3.3V/5V level is not enough for our Water Meter.
This is the same with competing products, so we use about 12-18V to overcome structural signal attenuation.

I think it is essential to amplify hardware and lower software gains as much as possible due to several problems.

Thanks

Hi David,

Got your requirement, this pulse can be amplify, but you need to check if the circuit can impletment amplify function.

I look this circuit have some issue.

Thanks!

Best Regards

Johnson