# Analog signal converter

Discussion in 'Electronics Homework Help' started by mark_friberg, Oct 4, 2018.

1. ### mark_friberg

1
0
Oct 2, 2018
Hello

I ponder the best solution to the exercize. Please criticize my version. Can anyone suggest a better solution?
Input data:
sine wave input (voltage range from 0V to 2.5V). The internal resistance of the source is 100kOhm. The signal should be converted to the range V out -5V ... + 5V, where + 5Vout corresponds to 0V Vin b -5Vout corresponds to -5V. Output current (sink / source) not less than 10mA
My solution

2. ### Harald KappModeratorModerator

11,981
2,807
Nov 17, 2011
That statement is incongruous as you previously wrote that the input is a "sine wave input (voltage range from 0V to 2.5V)".
Do you mean: 0 Vin -> +5 Vout, +2.5 Vin -> -5 Vout ?
If not, what else?

Secondly, We could analyze your circuit, but a short explanation what the three stages around U1A, U2A and U3A are supposed to do each will greatly reduce our effort.

Where in the selection of components have you taken into account
? Without any description of your design process at hand it looks like you are assuming an ideal voltage source for Vin which will have a big influence on the gain of your circuit.