Linear Technology DC1925A Series Demo Manual page 6

DC1925A SETUP
input traces with ground to minimize coupling from other
traces. Keep traces as short as possible.
Component Selection
When driving a low noise, low distortion ADC such as
the LTC2378-20, component selection is important so
as to not degrade performance. Resistors should have
DEMO MANUAL DC1925A
low values to minimize noise and distortion. Metal film
resistors are recommended to reduce distortion caused
by self heating. Because of their low voltage coefficients,
to further reduce distortion NPO or silver mica capacitors
should be used. Any buffer used to drive the LTC2378-20
should have low distortion, low noise and a fast settling
time such as the LT6203.
Figure 5. PScope Screen Shot
dc1925af
5