Re: [buildcheapeeg] virtual ground problem

From: Joerg Hansmann (info_at_jhansmann.de)
Date: 2002-01-18 18:23:41

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Hi Brian ,

----- Original Message -----
From: Brian Gr <brian_gr_at_hotmail.com>
To: <buildcheapeeg_at_yahoogroups.com>
Sent: Friday, January 18, 2002 4:43 AM
Subject: Re: [buildcheapeeg] virtual ground problem

> Hi Joerg,
> Would a Texas Instruments TLE2426, "The 'Rail Splitter' Precision Virtual Ground" be an
> alternative solution ?

Could be. Thanks for the hint.

I have just downloaded the datasheet and the spice macromodel.

> Impedance is < 100 ohms to 1Mhz, <1 ohm to 30Khz.

IMO the usability depends on the stabilty with bypassing Cs of at least
100nF to compensate decreasing performance at high frequencies.

>3 pin package,
>reduction in parts count. Details at http://focus.ti.com/docs/prod/productfolder.jhtml?>genericPartNumber=TLE2426
>Brian.

Regards,

Joerg

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