LTC1068IG Linear Technology, LTC1068IG Datasheet - Page 25

• Manufacturer Part Number: LTC1068IG
• Description: IC FILTR BUILDNG BLK QUAD 28SSOP
• Manufacturer: Linear Technology

Specifications of LTC1068IG

• Filter Type: Universal Switched Capacitor
• Frequency - Cutoff Or Center: 50kHz
• Number Of Filters: 4
• Max-order: 8th
• Voltage - Supply: 3.14 V ~ 11 V, ±3.14 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

TYPICAL APPLICATIONS
V
5V
IN
R11 121k
R63 6.49k
8.87k
R61
Passband – 3dB at (0.965)(f
R21 4.99k
R31 97.6k
R33 124k
R23 4.99k
LTC1068-25 8th Order Bandpass, f
0.1µF
Maximum f
78.7K
4.99k
4.99k
R51
R53
R
L3
10
11
12
13
14
CENTER
1
2
3
4
5
6
7
8
9
INV B
HPB/NB
BPB
LPB
NC
NC
SA
LPA
BPA
HPA/NA
INV A
SB
AGND
V
FilterCAD Custom Inputs for f
+
LTC1068-25
2nd ORDER SECTION
R
= 80kHz with ±5V Supplies
U
H1
118k
CENTER
HPD/ND
HPC/NC
INV C
INV D
BPC
BPD
B
C
A
D
LPC
CLK
LPD
SC
V
NC
NC
SD
–
) and (1.35)(f
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CENTER
R52
4.99k
R54
4.99k
= f
R64 6.98k
R24 4.99k
R34 102k
0.1µF
10.2398
10.3699
f
9.6241
9.7744
O
CLK
CENTER
R22 4.99k
(kHz)
R32 130k
R
C
B2
/32,
R62 9.53k
= 10kHz
47.5k
).
1068 TA23
15.6469
21.1060
18.6841
15.6092
Q
V
–5V
320kHz
OUT
TYPE
BP
BP
LP
LP
MODE
1b
1b
1b
1b
– 20
– 30
– 40
– 50
– 60
– 70
–10
10
0
7.5
8
LTC1068 Series
8.5
Gain vs Frequency
9
FREQUENCY (kHz)
9.5
10
10.5
11
11.5
25
1068 TA24
12
1068fb
12.5