://www.analog.com/media/en/technical-documentation/data-sheets/AD797.pdf)
FEATURES
Low noise
0.9 nV/√Hz typical (1.2 nV/√Hz maximum) input voltage
noise at 1 kHz
50 nV p-p input voltage noise, 0.1 Hz to
Chains used the deals to lure bargain-conscious customers, bringing traffic to stores. But deals priced at $5 and under have become less generous in the last 18 months.
