
LTC2753
20
2753f
Grounding
As with any high resolution converter, clean grounding is
important. A low impedance analog ground plane and star
grounding techniques should be used. IOUT2 must be tied
to the star ground with as low a resistance as possible.
When it is not possible to locate star ground close to
IOUT2, a low resistance trace should be used to route this
APPLICATIONS INFORMATION
pin to star ground. This minimizes the voltage drop from
this pin to ground caused by the code dependent current
owing to ground. When the resistance of this circuit
board trace becomes greater than 1Ω, a force/sense am-
plier conguration should be used to drive this pin (see
Figure 2). This preserves the excellent accuracy (1LSB
INL and DNL) of the LTC2753-16.