LTC1068IG Linear Technology, LTC1068IG Datasheet - Page 20

• 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
20
V
5V
IN
R11 32.4k
R63 8.45k
2.21k
R61
LTC1068-25 8th Order Lowpass, f
Attenuation – 50dB at (1.25)(f
R33 118k
R21 10k
R31 10k
R23 10k
(1.5)(f
0.1µF
20.5K
26.7k
4.99k
4.99k
R51
R53
R
R
L1
L3
CUTOFF
FilterCAD Custom Inputs for f
10
11
12
13
14
1
2
3
4
5
6
7
8
9
). Maximum f
2nd ORDER SECTION
INV B
HPB/NB
NC
NC
SA
LPA
BPA
HPA/NA
INV A
BPB
LPB
SB
AGND
V
+
LTC1068-25
R
R
H1
U
H3
B
C
A
D
18.2k
53.6k
HPC/NC
HPD/ND
CUTOFF
INV C
INV D
CUTOFF
BPC
BPD
LPC
CLK
LPD
SC
NC
NC
SD
V
–
CUTOFF
28
27
26
25
24
23
22
21
20
19
18
17
16
15
)and – 60dB at
= 120kHz
101.4936
70.9153
94.2154
79.7030
f
= f
O
(kHz)
CLK
C
R52
4.99k
R54
4.99k
R64 3.16k
= 100kHz
0.1µF
R34 15k
R24 10k
/32,
R32 32.4k
R
R
R22 10k
H2
L2
R62 5.9k
40.2k
36.5k
0.5540
2.3848
9.3564
0.9340
Q
1068 TA13
154.1187
230.5192
127.2678
f
N
(kHz)
V
3.2MHz
–5V
OUT
TYPE
LPN
LPN
LPN
LP
– 80
–20
–30
–40
–50
– 60
–70
–10
10
0
MODE
20
1bn
1bn
1bn
1b
Gain vs Frequency
FREQUENCY (kHz)
100
1069 TA14
1068fb
500