Other Parts Discussed in Thread: LMH6552, LMH6629, TPS65131, , LM5160
Hello
I'm designing some ultra-low noise amplifiers based on LMH6629 and LMH6552.
LMH6629 is at the front end of a sensor to amplify very small signals (uV to mV) and LMH6552 is for driving a high speed ADC.
LMH6629 needs ±2.5V/16mA and LMH6552 needs ±5v/16.5mA power supply .
actually I have a 5v 20W DC adapter.
my first choice is TPS65131 to boost up 5v to ±15volt. then I want to convert them to ±5 and ±2.5 with two ( TPS7A4700 and TPS7A3301 ).
But today I was encountered with LM27762 ! I think it's a nice choice bcoz it makes my design very compact and the noise is 22uVrms and is able to deliver (1.5~5V)/250mA to the consumers.
But I'm not sure about my choices! bcoz this is the first time I'm designing ultra-low noise circuits.
which one is better? which one is more reliable in ultra-low noise application?
I would be grateful if you could suggest a plan.
Regards