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MF10ACN Datasheet(PDF) 15 Page - Texas Instruments

Part No. MF10ACN
Description  Universal Monolithic Dual Switched Capacitor Filter
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

MF10ACN Datasheet(HTML) 15 Page - Texas Instruments

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1.0 Definition of Terms (Continued)
2.0 Modes of Operation
The MF10 is a switched capacitor (sampled data) filter. To
fully describe its transfer functions, a time domain approach
is appropriate. Since this is cumbersome, and since the
MF10 closely approximates continuous filters, the following
discussion is based on the well known frequency domain.
Each MF10 can produce a full 2nd order function. See
Table
1 for a summary of the characteristics of the various modes.
MODE 1: Notch 1, Bandpass, Lowpass Outputs:
f
notch =fO (See Figure 7)
f
O= center frequency of the complex pole pair
f
notch= center frequency of the imaginary zero pair = fO.
= quality factor of the complex pole pair
BW = the −3 dB bandwidth of the bandpass output.
Circuit dynamics:
MODE 1a: Non-Inverting BP, LP (See
Figure 8)
Note: VIN should be driven from a low impedance (<1kΩ) source.
(a) Bandpass
(b) Low Pass
(c) High-Pass
01039950
01039951
01039952
(d) Notch
(e) All-Pass
01039953
01039954
FIGURE 6. Response of various 2nd-order filters as a function of Q.
Gains and center frequencies are normalized to unity.
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