I don't know how to approach this circuit. I wish to get a an 400uA<Ic<2ma if I can but the way its configured is wierd. I don't know much about these things. what I do know is we can't use current mirrors and that this current source is to be used to power a Differential amplifier for a Adm=40 and CMRR greater than 70dB
Circuit is attached
I guess another question is, how much Ic for the current source do I actually need to meet that specification. I know Ib3<<IRb2. Other specs:
Vic = 0 V Isupply ≤ 3 mA Zero-to-peak un-clipped swing at Vo1 ≥ 2.5 V VCC =
VEE = 5 V |Adm| = 40 Operating frequency: 1 kHz
Rid ≥ 20 kΩ CMRR ≥ 70 dB
Circuit is attached
I guess another question is, how much Ic for the current source do I actually need to meet that specification. I know Ib3<<IRb2. Other specs:
Vic = 0 V Isupply ≤ 3 mA Zero-to-peak un-clipped swing at Vo1 ≥ 2.5 V VCC =
VEE = 5 V |Adm| = 40 Operating frequency: 1 kHz
Rid ≥ 20 kΩ CMRR ≥ 70 dB
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