mostafah67
Member level 1
there is a current source here which is independent to supply voltage and it have a start up circuit (M5) that prevents zero current in the loop:
(figure from:analog cmos integrated circuit by: behzad razavi)
i simulate the circuit but M5 is cutoff, i think i choose the wrong value for Rs. can you help me that what is the start up condition in this circuit:shock:
(figure from:analog cmos integrated circuit by: behzad razavi)
i simulate the circuit but M5 is cutoff, i think i choose the wrong value for Rs. can you help me that what is the start up condition in this circuit:shock: