Datasheet

LTC1066-1
9
10661fa
FILTER
IN
CONNECT 1
COMP1
COMP2
CONNECT 2
FILTER
OUT
8TH ORDER
SWITCHED-
CAPACITOR
NETWORK
5,18 4,10 15 8 9 6 7 16
17
12
13
11
141
3
2
–IN A
+IN A
V
+
V
–
GND 50/100 CLK
+IN B
PATENT PENDING
LTC1066-1
OUT B
OUT A
C
F
R
F
11066-1 BD
–
+
HIGH SPEED
OP AMP
–
+
HIGH SPEED
OP AMP
BLOCK DIAGRA
W
TEST CIRCUIT
1066-1 TC01
NOTE: RC COMPENSATION BETWEEN PINS 11 AND 13 IS
REQUIRED ONLY FOR CLOCK-TUNABLE OPERATION FOR:
50kHz < f
CUTOFFs
≤ 100kHz.
THE TEST SPECIFICATIONS FOR:
f
CLK
= 2MHz, f
CUTOFF
= 40kHz, AND
f
CLK
= 4MHz, f
CUTOFF
= 80kHz
INCLUDE THE EFFECTS OF RC COMPENSATION.
COMPENSATION DOES NOT INFLUECE THE SPECIFICATIONS
FOR:
f
CLK
= 400kHz, f
CUTOFF
= 8kHz.
FOR CLOCK-TUNABLE f
CUTOFFs
FROM 2kHz TO 50kHz
COMPENSATION IS NOT REQUIRED AND THE FILTER’S
PASSBAND PERFORMANCE IS REPRESENTED BY THE
TYPICAL SPECIFICATIONS AT:
f
CLK
= 400kHz, f
CUTOFF
= 8kHz.
V
+
V
+
V
–
V
–
V
+
V
OUT
V
IN
f
CLK
(DUTY CYCLE
= 50% ±10%
)
ELLIPTIC
RESPONSE
50:1
LINEAR PHASE
RESPONSE
100:1
1µF
0.1µF
15pF
0.1µF
0.1µF
10k
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
20k
20Ω
30k
LTC1066-1
0.1µF
20Ω
OUT A
–IN A
+IN A
V
–
V
+
CONNECT 1
FILTER
OUT
50/100
CLK
V
+
OUT B
+IN B
GND
FILTER
IN
COMP 2
CONNECT 2
COMP 1
V
–