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"low output impedance" v.s. "rail-to-rail out
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orap



Joined: 15 Mar 2005
Posts: 1
Post15 Mar 2005 2:07   

"low output impedance" v.s. "rail-to-rail out
hi there,

Is there any reference materials which addresses the problem between "low output impedance" and "rail-to-rail output range"???

I need to have a rail-to-rail output with low output impedance in a standard CMOS process. It just kills me.

Thanks.

Aaron
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ambreesh



Joined: 21 Feb 2005
Posts: 369
Helped: 21
Post15 Mar 2005 5:22   

Re: "low output impedance" v.s. "rail-to-rail
It is just a thought, can we not buffer (unity gain configuration amp) at output of a class AB (rail-rail) stage.
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ezpcb



Joined: 02 Mar 2005
Posts: 202
Helped: 5
Post15 Mar 2005 7:39   

Re: "low output impedance" v.s. "rail-to-rail
what's the output impendence do you preferring? a R-R OPAMP plus push-pull MOSFET pair is an option.

mike

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namrta



Joined: 22 Feb 2005
Posts: 7
Post15 Mar 2005 8:59   

Re: "low output impedance" v.s. "rail-to-rail
a 2 stage amp with push-pull output will do
what configuration r u using?
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qslazio



Joined: 23 May 2004
Posts: 194
Helped: 9
Post15 Mar 2005 11:36   

"low output impedance" v.s. "rail-to-rail out
push-pull source follower will provide low output impedence as well as r-2-r signaling
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Post15 Mar 2005 11:36   

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srivatsan



Joined: 04 Aug 2004
Posts: 183
Helped: 4
Post16 Mar 2005 0:26   

Re: "low output impedance" v.s. "rail-to-rail
This IEEE paper should help you.
regards,
srivats

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