Datasheet

13
LTC1264
1264fb
U
SA
O
PP
L
IC
AT
ITY
P
I
CA
L
Clock-Tunable, f
CENTER
= f
CLK
/20, 100kHz, 4th Order Bandpass and Notch Filters
Linear Phase Clock-Tunable to 400kHz, Dual 4th Order Lowpass Filter
FREQUENCY (Hz)
10k
GAIN (dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
100k 1M
1264 TA04b
Gain vs Frequency
FREQUENCY (Hz)
10k
GAIN (dB)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
100k 1M
1264 TA05b
V
S
= ±7.5V
f
CLK
= 2MHz
Gain vs Frequency
1264 TA04a
f
CLK
2MHz
3MHz
4MHz
5MHz
f
–3dB
(V
S
= ±8V)
125kHz
200kHz
275kHz
400kHz
R2
IN 1
OUT 2
INV B
HPB/NB
BPB
LPB
SB
AGND
V
+
SA
LPA
BPA
HPA/NA
INV A
INV C
HPC/NC
BPC
LPC
SC
V
–
CLK
SD
LPD
BPD
HPD/ND
INV D
R3
R2
R4
R1
LTC1264
8V
–8V
R4
R3
R2
R3
R4
C
0.1µF
f
CLK
R4
R3
R2
R1
OUT 1
C
R1
IN 2
R1
0.1µF
LTC1264 SIDE
MODE
R1
R2
R3
R4
C
B
2
17.8k
27.4k
19.6k
51.1k
5pF
C
2
20k
27.4k
21k
75k
5pF
A
2
17.8k
27.4k
19.6k
51.1k
5pF
D
2
20k
27.4k
21k
75k
5pF
C
C
T
A
≤ 50°C
R2
R1
BANDPASS IN
1264 TA05a
NOTCH OUT
INV B
HPB/NB
BPB
LPB
SB
AGND
V
+
SA
LPA
BPA
HPA/NA
INV A
INV C
HPC/NC
BPC
LPC
SC
V
–
CLK
SD
LPD
BPD
HPD/ND
INV D
R3
R1
R2
R3
R1
LTC1264
0.1µF
0.1µF
7.5V
C
BANDPASS OUT
–7.5V
f
CLK
2MHz
C
R2
R3
R2
R3
R1
NOTCH IN
B
1
20k
10k
20k
C
1
20k
10k
20k
A
1
10k
10k
20k
10pF
D
1
10k
10k
20k
10pF
LTC1264 SIDE
MODE
R1
R2
R3
C