Linear 1761?  20uV RMS 10hz-100Khz but 65db PSRR.  I use it in a 
precision audio design.  100mA load.  Take a look.

J


Vasile Surducan wrote:

> I'm designing a RF module using a transciever which need a very stable
> supply for the VCO and PLL. The requirements are: availability (US),
> smallest size (SOT23, SC70), low noise and high PSRR at around 2.8V
> output and less than 100mA load.
> So far I found MAX8510 which theoretically has less than 60uVpp noise
> and 78dB PSRR at 1Khz. However my previous experience with MAXIM LDO's
> shows that the noise is much bigger on the board at the LDO output,
> than specified in the datasheet, and if there is a switching load (as
> an oscillator) is worse even with all rejecting capacitors.
> Anyone have some experience with MAX8510 or with other low noise LDO
> regulator of the same type/category ?
> 
> thx,
> Vasile
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