LTC1068CG Linear Technology, LTC1068CG Datasheet - Page 26

• Manufacturer Part Number: LTC1068CG
• Description: IC FILTR BUILDNG BLK QUAD 28SSOP
• Manufacturer: Linear Technology

Specifications of LTC1068CG

• 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
V
26
5V
IN
R11 18.2k
R63 2.55k
R43 20.5k
R33 36.5k
R23 10k
R31 16.5k
R41 11.3k
LTC1068-200 8th Order Highpass, f
R21 10k
C23 [1/(2π • R23 • C23) = (160)(f
66.5k
4.99k
Maximum f
R53
R
L1
0.1µF
Attenuation – 60dB at (0.6)(f
FilterCAD Custom Inputs for f
CUTOFF
10
11
12
13
14
2nd ORDER SECTION
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
+
LTC1068-200
= 20kHz with ±5V Supplies
R
U
H1
R
H3
B
C
A
D
CUTOFF
11.8k
10k
HPB/NC
INV C
INV D
)]
HPD
BPC
CLK
LPD
BPD
LPC
SC
V
NC
NC
SD
–
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CENTER
CENTER
f
0.9407
1.0723
0.9088
0.9880
O
(kHz)
C
= f
).
= 1kHz
R24 20.5k
R34 14.3k
0.1µF
CLK
R44 21k
R22 21.5k
R32 10.2k
R42 18.7k
R
R
/200,
H2
L2
1.5964
0.5156
3.4293
0.7001
20.5k
249k
Q
1068 TA25
f
0.4212
0.2869
0.5815
0.0000
N
(kHz)
V
– 5V
200kHz
OUT
TYPE
HPN
HPN
HPN
HP
– 30
– 40
– 50
– 60
– 70
– 80
– 10
– 20
10
0
0.2
MODE
3a
3a
2b
3
Gain vs Frequency
FREQUENCY (kHz)
1
1068 TA26
1068fb
10