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6 Threads found on Wilson Current Source
the main thing of the all current sources to get constant wilson and normal sources, output current of the current source is equal to reference current. but in widlar it is not like that,output current less than the reference (...)
You can use a bandgap reference to generate it. I don't remember the name of the circuit but you can also use a a simple n-channel current mirror(1:N) with a resistor between the source and ground of N-size MOSFET. The load for both the transistors is a p-channel current-mirror load. I think it is some variation of (...)
wilson current source? help me~ thanks
This is called wilson current source. The presence of MC4 is to boost output resistance of cascoded current source formed by MC5 and MC6 by gm4*(rc4//rc7). The current goes through MC5 may not equal to Ibias, but is set by Vbias. Hi it's better phrase. regards
In bipolar,we use wilson current mirror to get rid of the systematic error due to base current but in CMOS,we don't have "gate current",then do we use wilson current mirror in CMOS? if so, what's the benefit of using it? Thanks in advance
The wilson current source is particularly advantageous to use in the case of bipolar tech. There is no advantage for the case of MOSFETs. The explanation is given in more detail by Prof.Brodersen in his video lecture(EECS140 at ) when another person asked the same question as you did.