Tool/software:
HI Team,
As title, we have the differential signal the the range is +/-16V. We would like to the circuit that can let signal down to +/-2.83V with differential output. Do we have suggestion and reference circuit?
Regards,
Roy
Hi Roy,
we have the differential signal the the range is +/-16V. We would like to the circuit that can let signal down to +/-2.83V with differential output.
If I understand your question correctly, the input differential signal is ±16Vpk and Vout needs to be ±2.83Vpk. You would need to reduce the gain by 2.83/16 in difference amplifier. You can also use full differential amplifier topology for this using THP210. Or you can use two OPA1692 op amps to configure a FDA with FDA output in discrete manner. Here is an example - FDA to single ended output.
https://www.ti.com/lit/an/sloa054e/sloa054e.pdf?ts=1736988576753
https://web.mit.edu/6.101/www/reference/op_amps_everyone.pdf
Or you can configure in the following manner in FDA input and FDA output with two discrete op amps. This is using different input type and application, but the differential I/O concept is the same.
If you have other questions, please let me know.
Best,
Raymond
Hi Roy,
End customer request the differential output. Do you have any idea for the request?
Here is the differential input and output example. It can be configured as single or dual supply rail. They are multiple variations of the topology depending on what you want to do.
OPA1692 differential 01192025.TSC
The differential input and output is similar to the Figure below.
https://www.ti.com/lit/an/snva530/snva530.pdf?ts=1737233221164
If you have other questions, please let me know.
Best,
Raymond
