Diode-connected configuration provides better settling time. Transistor-connected configuration provides better series resistance cancellation.
R
S (optional) should be < 1 kΩ in most applications. Selection of R
S depends on application; see the
Filtering section.
C
DIFF (optional) should be < 1000 pF in most applications. Selection of C
DIFF depends on application; see the
Filtering section and
Figure 6-6,
Remote Temperature Error vs. Differential Capacitance.