Datasheet
14
LTC1060
1060fb
Figure 13. Mode 4: 2nd Order Filter Providing Allpass,
Bandpass, Lowpass
Figure 14. Mode 4a: 2nd Order Filter Providing Highpass,
Bandpass, Lowpass, Allpass
Figure 15. Mode 5: 2nd Order Filter Providing Numerator
Complex Zeros, Bandpass, Lowpass
Figure 16. Mode 6a: 1st Order Filter Providing Highpass,
Lowpass
1/2 LTC1060
S
A/B
V
IN
f
0
=; Q
=; H
OAP
= – ; H
OLP
= –2 H
OBP
= – 2
f
CLK
100(50)
TLC1060 • MOO10
1
–
+
–
–
+
R3
R2
R1 = R2
AP2
(18)
LP
(20)
BP
(19)
S1A
(16)
V
+
(17)
R3
R2
R3
R2
R2
R1
15
3
5
2
Σ
6
4
()
∫∫
1/2 LTC1060
S
A/B
V
IN
1
+
–
–
–
+
R3
R4
R2
2R
R
R5
R1
HP
(18)
LP
(20)
BP
(19)
S1A
(16)
V
–
(17)
15
4
5
2
Σ
6
f
0
=; Q
= ; H
0BP
= –; H
0AP
= ; H
0HP
= –
f
CLK
100(50)
TLC1060 • MOO11
R2
R4
R3
R2
R3
R1
; H
0LP
= –
R4
R1
R2
R1
R5
2R
R2
R4
–
+
EXTERNAL
OP AMP
3
∫∫
1/2 LTC1060
S
A/B
V
IN
TLC1060 • MOO12
1
–
+
–
–
+
R3
R4
R2
R1
CZ
(18)
LP
(20)
BP
(19)
S1A
(16)
V
+
(17)
15
3 5
2
Σ
6
4
f
0
=
Q
2
=
1 + ; f
z
= ; Q =
f
CLK
100(50)
f
CLK
100(50)
f
CLK
2
R2
R4
R3
R1
()
1 +
R2
R4
1 –
R1
R4
R3
R2
=
1 – ; H
OZ
= (f 0)
=
R1
R4
R3
R2
=
R2
R1
(R4/R1) –1
(R4/R2) + 1
; H
OZ
;f
←
←
()
=
R2
R1
1 + (R2/R1)
1 + (R2/R4)
H
OBP
; H
OLP
1 +
∫∫
1/2 LTC1060
S
A/B
V
IN
1
+
–
–
–
+
R3
R2
R1
N
(18)
LP
(20)
BP
(19)
S1A
(16)
V
–
(17)
15
4
3 5
2
Σ
6
f
C
=; H
0LP
= –R3/R1 ; H
0HP
= –R2/R1
f
CLK
R2
100(50) R3
TLC1060 • MOO13
∫
∫
ODES OF OPERATIO
UW