AD1317

–10–

REV. A

Output wire lengths should be kept below one inch. Longer

connections require the use of transmission line techniques to

prevent ringing and reflections. Lines should be terminated with

their characteristic impedance to –2 V. Thevenin-equivalent

High quality RF capacitors should be used for power supply

bypassing. These should be located as closely as possible to the

AD1317’s power pins and connections to the ground plane

must be bypassed with 470 pF capacitors located within 0.25

inches of the device’s supply pins. In addition, each supply

should be bypassed with 0.1

µF ceramic and 10 µF tantalum

capacitors. Low impedance power distribution techniques will

make the locations of these components less critical. Adding

470 pF capacitors at the VINA and VINB inputs, as close as

possible to the package, will improve circuit performance and

noise immunity in dc-compare applications.

Figure 26. Basic Circuit Decoupling

Figure 27. Typical Comparator Hysteresis

Figure 28. Comparator Hysteresis Test Setup

Figure 29. Typical Hysteresis Curve

Figure 30. Hysteresis