Datasheet

LTC1064
12
1064fb
TYPICAL APPLICATIO S
U
INPUT FREQUENCY (kHz)
0
GAIN (dB)
2
4
5
13
10
0
–10
–20
–30
–40
–50
–60
–70
V
S
= ±5V
1064 TA10
INV B
HPB/NB
BPB
LPB
SB
AGND
V
+
SA
LPA
BPA
HPA/NA
INV A
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
INV C
HPC/NC
BPC
LPC
SC
V
–
CLK
50/100
LPD
BPD
HPD
INV D
LTC1064
R22
R32
R42
R23
R33
R43
R13
R14
R12
R44
R34
R24
R11
V
IN
5V
0.1µF
–5V
V
OUT
1064 TA09
R41
R31
R21
0.1µF
RESISTOR VALUES:
R11 = 88.7k R21 = 10k R31 = 35.7k R41 = 88.7k
R12 = 10k R22 = 44.8k R32 = 33.2k R42 = 24.9k
R13 = 15.8k R23 = 48.9k R33 = 63.5k R43 = 25.5k
R14 = 15.8k R24 = 44.8k R34 = 16.5k R44 = 24.9k
f
CLK
=
3.5795MHz
16
INPUT FREQUENCY (kHz)
15
GAIN (dB)
10
0
–10
–20
–30
–40
–50
–60
–70
10 20 40 100
1064 TA08
V
S
= ±5V
f
CLK
= 1.28MHz
PIN 17 AT V
+
INV B
HPB/NB
BPB
LPB
SB
AGND
V
+
SA
LPA
BPA
HPA/NA
INV A
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
INV C
HPC/NC
BPC
LPC
SC
V
–
CLK
50/100
LPD
BPD
HPD
INV D
LTC1064
R22
R32
R42
R
H3
R11
V
IN
TO V
+
5V TO 8V
1.28MHz
–5V TO –8V
V
OUT
1064 TA07
R12
R41
R31
R21
0.1µF
R23
R33
R43
R
H2
R44
R34
R24
R
L2
RESISTOR VALUES:
R11 = 46.95k R21 = 10k R31 = 38.25k R41 = 11.81k
R12 = 93.93k R22 = 10k R32 = 81.5k R42 = 14.72k R
L2
= 27.46k R
H2
= 6.9k
R23 = 16.3k R33 = 70.3k R43 = 10k R
L3
= 17.9k R
H3
= 69.7k
R24 = 13.19k R34 = 39.42k R44 = 10.5k
0.1µF
R
L3
NOTE 1: THE V
+
, V
–
PINS SHOULD BE BYPASSED WITH A 0.1µF TO 0.22µF
CERAMIC CAPACITOR, RIGHT AT THE PINS.
NOTE 2: THE RATIOS OF ALL (R2/R4) RESISTORS SHOULD BE MATCHED
TO BETTER THAN 0.25%. THE REMAINING RESISTORS SHOULD BE
BETTER THAN 0.5% ACCURATE.
8th Order Bandpass Filter with 2 Stopband Notches
Amplitude Response
C-Message Filter
Amplitude Response