Datasheet

18
LTC1067/LTC1067-50
TYPICAL APPLICATIONS
U
1kHz Linear Phase Bandpass Filter
LTC1067
V
+
NC
V
+
SA
LPA
BPA
HPA/NA
INV A
CLK
AGND
V
–
SB
LPB
BPB
HPB/NB
INV B
R32, 53.6k
R42, 80.6k
R22, 10k
R61
40.2k
R51
4.99k
R31, 56.2k
R21, 10k
R11
60.4k
R
B1
, 36.5k
V
OUT
100kHz
–5V
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
0.1µF
0.1µF
5V
V
IN
1067 TA06a
V
S
±5V 5V (OR ±2.5V) 3V (OR ±1.5V)
MAXIMUM
FREQUENCY 5kHz 2.5kHz 2.2kHz
CENTER
Gain and Group Delay vs Frequency
FREQUENCY (Hz)
10
5
0
–5
–10
–15
–20
–25
–30
–35
–40
3.0
2.5
2.0
1.5
1.0
0.5
0
GAIN (dB)
DELAY (ms)
1067 TA06b
600 760 920 1080 1240 1400
GAIN
DELAY
INPUT
(500mV/DIV)
OUTPUT
(50mV/DIV)
1067 TA06c
5ms/DIV
Sine Burst Response
Single Supply, 4th Order Bandpass Filter
f
CENTER
= f
CLK
/64, –3dB BW = f
CENTER
/20
LTC1067-50
V
+
NC
V
+
SA
LPA
BPA
HPA/NA
INV A
CLK
AGND
V
–
SB
LPB
BPB
HPB/NB
INV B
R32, 255k
R62
8.66k
R52
4.99k
R22, 4.99k
R61
7.32k
R51
4.99k
R31, 255k
R21, 4.99k
R
B1
, 115k
V
OUT
64kHz
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1µF
0.1µF
1067 TA07a
V
S
MAXIMUM f
CENTER
SINGLE 5V 12kHz
SINGLE 3.3V 7.5kHz
SINGLE 3V 5.5kHz
NOISE
V
S
(FILTER INPUT AT V
+
/2)
SINGLE 5V 426µV
RMS
SINGLE 3.3V 333µV
RMS
SINGLE 3V 290µV
RMS
R11
267k
5V
V
IN