LMF100_15 Datasheet, PDF (30/40 Pages) Texas Instruments – LMF100 Dual High-Performance Switched Capacitor Filters

LMF100
SNOSBG9B – JULY 1999 – REVISED JUNE 2015
Typical Application (continued)
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Figure 60. Second-Order Notch Filter
Figure 61. Method for Trimming V_OS
9.2.2.4 Sampled Data System Considerations
The LMF100 is a sampled data filter, and as such, differs in many ways from conventional continuous-time filters.
An important characteristic of sampled-data systems is their effect on signals at frequencies greater than one-
half the sampling frequency. (The sampling frequency of the LMF100 is the same as its clock frequency.) If a
signal with a frequency greater than one-half the sampling frequency is applied to the input of a sampled data
system, it will be reflected to a frequency less than one-half the sampling frequency. Thus, an input signal whose
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