Datasheet

3.0 Applications Information

(Continued)

signals. In noise-sensitive applications, a ratio of 100:1 will

result in 3 dB lower output noise for the same filter configu-

ration.

The accuracy of the f

CLK

ratio is dependent on the value of

Q. This is illustrated in the curves under the heading “Typical

Performance Characteristics”. As Q is changed, the true

value of the ratio changes as well. Unless the Q is low, the

error in f

CLK

will be small. If the error is too large for a spe-

cific application, use a mode that allows adjustment of the ra-

tio with external resistors.

DS005645-35

FIGURE 25. The Sampled-Data Output Waveform

LMF100