AD8222
DRIVING CABLING
All cables have a certain capacitance per unit length, which
varies widely with cable type. The capacitive load from the cable
may cause peaking in the AD8222’s output response. To reduce
the peaking, use a resistor between the AD8222 and the cable.
Because cable capacitance and desired output response vary
widely, this resistor is best determined empirically. A good
starting point is 50 Ω.
The AD8222 operates at a low enough frequency that
transmission line effects are rarely an issue; therefore, the
resistor need not match the characteristic impedance of
the cable.
AD8222
(DIFF OUT)
(SINGLE OUT)
AD8222
Figure 53. Driving a Cable
Rev. A | Page 21 of 24
05947-052
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