DC gain trade off in 741 Op Amp

[lucky8]

hello,

i need advice. i'm trying to modify the 741 op amp.
i know that if i increase DC gain, then my cut-off frequency and phase margin will definately go down. is there any other way that i can do to balance the trade-off?

i hav set my spec:
1. DC gain = 118dB (6dB increment)
2. cut-off frequency > 5Hz
3. phase margin > 55 degrees

 

[jiangwp]

Reduce the bias current of differential pairs and the output bias current.

Or apply the cascode structure to replace the active load.

Or increase the Early effect of some transistors with the equation for gain.