safwatonline
Advanced Member level 4
i see that Open loop amplifiers are being used in pipelined ADCs with the claim that they reduce the Power Consumption, can anyone justify this.
what i was thinking about is that we say need Gain G and BW B in closed loop so that the effective gain will be say G/(1+G*beta) and the BW will be B*(1+G*beta), while in open loop i need the same effective gain and BW , so eventually i need the same GBW!
p.s. i am not concerned about accuracy, linearity just the Power consumption.
what i was thinking about is that we say need Gain G and BW B in closed loop so that the effective gain will be say G/(1+G*beta) and the BW will be B*(1+G*beta), while in open loop i need the same effective gain and BW , so eventually i need the same GBW!
p.s. i am not concerned about accuracy, linearity just the Power consumption.