What values of the main parameters of an op amp are suitable in a bandgap reference design? The purpose is to obtain a smaller temperature drift in the range -40 to 125 C.
The model I am using now is an ideal op amp with the following parameters:
gain = 835e3; freq_unitygain = 1.0e6; rin = 1e6; vin_offset = 0.0; ibias = 0.0; iin_max = 100e-6; slew_rate = 0.5e6; out = 80; vsoft = 0.5;
The schematics of the design is the one from below.
And the schematics of the op amp is this:
Is the gain the most important parameter? Or the bandwidth?