Lpc2000

Does anyone (or Philips Techs) know the max input current leakage of
the ADC channel input pins? 

The LPC2148 datasheet says that the input leakage current is max 4uA,
but I am thinking that this MAY apply just to the digital signal pins.
We are trying to use one of the ADC channels in conjunction with a
very accurate voltage divider for determining battery voltage for a
battery powered application.

We need the actual SPECIFICATION max of the input leakage current
(and the polarity if it can be depended upon) so as to be able to
calculate a worst case error.