incol
Full Member level 2
Hi all:
See the circuit. M1 and m3, m6 and m7 have the same size. When m1 and m3's gate voltage, amp's +input are all 1/2VCC, I want amp's output is also 1/2VCC. But I find that m6 and m7 is not match well, so there is a current go though m7 and R1 to amp's transistor, and VOUT= 1/2VCC- I*R1.So how to slove this problem with small change of the circuit?
Thanks very much!
See the circuit. M1 and m3, m6 and m7 have the same size. When m1 and m3's gate voltage, amp's +input are all 1/2VCC, I want amp's output is also 1/2VCC. But I find that m6 and m7 is not match well, so there is a current go though m7 and R1 to amp's transistor, and VOUT= 1/2VCC- I*R1.So how to slove this problem with small change of the circuit?
Thanks very much!