MF10CCWM National Semiconductor, MF10CCWM Datasheet - Page 11

• Manufacturer Part Number: MF10CCWM
• Description: IC,FILTER,AP/BP/HP/LP/NOTCH,CMOS,SOP,20PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of MF10CCWM

• Rohs Compliant: NO

2 0 Modes of Operation
MODE 3a HP BP LP and Notch with External Op Amp
(See Figure 11 )
f
Q
H
H
H
f
H
H
H
O
n
OHP
OBP
OLP
ON
n1
n2
e
e
e b
e b
e b
e
e
e
e
e b
f
notch frequency
f
gain of notch (as f
gain of notch as f
gain of notch at
100
CLK
e
R2
R1
R3
R1
R4
R1
R
R
R2
R4
g
h
f
O
c
c
c
e
H
R3
R2
OHP
R2
R4
Q
or
R
R
e
g
I
f
CLK
50
H
f
100
OLP
CLK
c
0)
b
f
CLK
e
2
R
R2
R4
R
R
R
h
I
g
h
R
R
g
H
or
I
(Continued)
OHP
c
f
CLK
50
H
OLP
R
R
h
I
FIGURE 11 MODE 3a
FIGURE 12 MODE 4
11
MODE 4 Allpass Bandpass Lowpass Outputs
(See Figure 12 )
f
Q
H
H
H
Circuit Dynamics H
occurs causing a 0 4 dB peaking around f
response (which theoretically should be a straight line) If this is unaccept-
able Mode 5 is recommended
O
Due to the sampled data nature of the filter a slight mismatch of f
OAP
OLP
OBP
e
e
e
e b
e b
e
e
e
f
f
BW
Q
For AP output make R1
center frequency
100
CLK
z
f
Allpass gain
Lowpass gain (as f
Bandpass gain (at f
O
Z
R3
R2
e
e
e
R2
R1
or
quality factor of complex zero pair
center frequency of the complex zero
R3
R2
f
1
a
CLK
50
a
OBP
1
R2
R1
e b
at 0
e
e b
(H
k
2
OLP
e
f
k
2
f
)
e
O
O
0)
f
c
)
CLK
of the allpass filter amplitude
TL H 10399 – 21
R3
R2
R2
2
Q
e
e b
(H
OAP
TL H 10399 – 20
R2
R1
e
a
e b
R3
R1
z
1)Q
and f
1
f
O
O