LTC1068IG Linear Technology, LTC1068IG Datasheet - Page 18

• 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

LTC1068 Series
TYPICAL APPLICATIONS
18
V
5V
IN
LTC1068-200 8th Order Linear Phase Lowpass, f
14.3k
R11
R43 12.4k
R33 12.4k
R23 10k
R21 12.4k
R41 15.4k
23.2k
R31 10k
R
L3
0.1µF
for Ultralow Frequency Applications
10
11
12
13
14
1
2
3
4
5
6
7
8
9
FilterCAD Custom Inputs for f
INV B
HPB/NB
BPB
LPB
SB
NC
AGND
V
NC
SA
LPA
BPA
HPA/NA
INV A
+
LTC1068-200
2nd ORDER SECTION
R
23.2k
B3
R
L1
23.2k
HPD/ND
HPC/NC
INV D
INV C
B
C
A
D
U
BPC
LPD
BPD
LPC
CLK
SC
NC
NC
SD
V
–
28
27
26
25
24
23
22
21
20
19
18
17
16
15
R22 15.4k
R52 5.11k
R24 15.4k
R32 10k
R34 10k
f
1.7947
1.6002
1.7961
1.6070
R54 5.11k
O
CUTOFF
(Hz)
C
0.1µF
= 1Hz
14.3k
R64 9.09k
R
R62 9.09k
L2
= f
0.7347
0.5195
1.1369
0.5217
CLK
Q
/400
1068 TA09
1.0159
– 5V
400kHz
V
OUT
Q
N
TYPE
LPBP
LP
LP
LP
–10
–20
– 40
– 50
– 60
–70
– 80
– 90
–30
10
0
0.1
MODE
1b
3s
1b
GROUP
DELAY
3
GAIN
Gain and Group Delay
vs Frequency
FREQUENCY (Hz)
1
1068 TA10
10
1.0
0.9
0.8
0.7
0.2
0.1
0
0.6
0.5
0.4
0.3
1068fb