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LMF100CIWM Datasheet(PDF) 17 Page - Texas Instruments

Part # LMF100CIWM
Description  Dual High-Performance Switched Capacitor Filters
PDF  42 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LMF100CIWM Datasheet(HTML) 17 Page - Texas Instruments

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1
OBP
Circuit dynamics : H
Q
=
2
OBP
H
1 (noninverting)
=
1
OBP
R3
H
R2
= -
OLP
OLP(peak)
OLP
H
1; H
Q H
(for high Q ' s)
= -
@
´
CLK
CLK
0
f
f
f
or
100
50
=
OLP(peak)
OLP
H
Q H
(for high Q ' s)
@
´
OBP
OLP
OBP
OLP
ON
H
H
or H
H
Q
H
Q
Q
=
=
´
=
´
1
OBP
Circuit dynamics : H
Q
=
BW
the
3 dB bandwidth of the bandpass output.
=
-
0
f
R3
Q
quality factor of the complex pole pair
BW
R2
=
=
=
ON
H
Notch output gain as
=
f
0
®
CLK
f
f
/ 2
®
2
1
R
R
-
=
OBP
R3
H
Bandpass gain (at f
0)
R1
=
®
= -
OLP
R2
H
Lowpass gain (as f
0)
R1
=
®
= -
notch
0
f
center frequency of the imaginary zero pair
f
=
=
CLK
CLK
0
f
f
f
center frequency of the complex pole pair
or
100
50
=
=
Not Recommended for New Designs
LMF100
www.ti.com
SNOSBG9B – JULY 1999 – REVISED JUNE 2015
Device Functional Modes (continued)
8.4.1.1 MODE 1: Notch 1, Bandpass, Lowpass Outputs:
fnotch = f0 (See Figure 40)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
8.4.1.2 MODE 1a: Noninverting BP, LP (See Figure 41)
(11)
(12)
(13)
(14)
(15)
(16)
Note: VIN should be driven from a low-impedance (<1 k
Ω) source.
Figure 40. MODE 1
Figure 41. MODE 1a
Copyright © 1999–2015, Texas Instruments Incorporated
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17
Product Folder Links: LMF100



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