I'm looking at building a small handheld unit based on an nRF24L01+ in PRX mode. It needs to be able to receive "continuously" to receive control signals that would cause an attached Atmel ATtiny to indicate some LEDs or make a PWM tone.
Since it will be battery controlled, I am considering the fact that both the nRF and the ATtiny have quite a flexible supply voltage range, I was thinking of powering the device directly from 2 NiMH AAA batteries; having a nominal voltage of 2.4V.
However, since the radio chip is rated for 3.3V typical, how is it going to perform at this lower voltage? Does the range deteriorate, or does it have some sort of internal boost regulator that simply means it'll end up drawing more current?
(See also my additional question of nRF24L01+ RX in pulsed operation to save power?)