Each dual supply opamp can be operated with a single supply if designed for a proper bias point (normally at 50% of the supply). This requires specific bias resistors at the input (analog to BJT biasing).
Each dual supply opamp can be operated with a single supply if designed for a proper bias point (normally at 50% of the supply). This requires specific bias resistors at the input (analog to BJT biasing).
I guess he means to generate virtual ground with precision resistors . With Ne5532 I am not getting more than 1V amplification of ac signal . Can someone suggest me a superior amplifier then LM358 in terms of noise characteristics and details in datasheet . I need an output swing of about 6V max ac signal . Rgds
Yes - you are right. The resistors are not "specific". It was the wrong expression.
A resistive bias network is necessary for biasing the input and the output to approx. half of the single supply.
However, in most cases, equality of the input resistors (input dc current compensation) is not necessary.
Can someone suggest me a superior amplifier then LM358 in terms of noise characteristics and details in datasheet . I need an output swing of about 6V max ac signal . Rgds
Yes - you are right. The resistors are not "specific". It was the wrong expression.
A resistive bias network is necessary for biasing the input and the output to approx. half of the single supply.
However, in most cases, equality of the input resistors (input dc current compensation) is not necessary.
Thanks for clearing that up. I just thought you might have some pearls of wisdom contrary to what I thought I knew. Yes, offset error is generally not an issue for low gain and/or AC-coupled amplifiers.