1. i dont get why you need vref in adc if you can convert the voltage to digital by resistors ..i mean, lets say 2.5 voltage enter v(in) and you have a chain of resistors,
each resistor go up by 1, then the third resistor dont have output and one before have output, and you get digital output, just it, why the hell you need vref if you can know like this...what the volatge????
2. i search the entire internet about the circuit of comperator, and hell nobody can provide clear answer, beside a tringler with 2 inputs and one output.. so i start to think my self that the only way comperator can compare 2 volatges is to have 2 resistors inside... one for v(ref) and one for v(in)
and if there is output, then its mean that the v(in) is bigger...because the volatge is bigger then the resistor and output 1...i found design of comperator from toshiba which have 2 resistors inside...
thanks
each resistor go up by 1, then the third resistor dont have output and one before have output, and you get digital output, just it, why the hell you need vref if you can know like this...what the volatge????
2. i search the entire internet about the circuit of comperator, and hell nobody can provide clear answer, beside a tringler with 2 inputs and one output.. so i start to think my self that the only way comperator can compare 2 volatges is to have 2 resistors inside... one for v(ref) and one for v(in)
and if there is output, then its mean that the v(in) is bigger...because the volatge is bigger then the resistor and output 1...i found design of comperator from toshiba which have 2 resistors inside...
thanks