20
LTC1563-2/LTC1563-3
156323fa
Single Supply, 10kHz, Bandpass Filter
Maximum Fcenter = 120kHz (–3dB Bandwidth = Fcenter/10) Frequency Response
LT 1205 REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2005
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC1560-1 5-Pole Elliptic Lowpass, f
C
= 1MHz/0.5MHz No External Components, SO-8
LTC1562 Universal Quad 2-Pole Active RC 10kHz < f
O
< 150kHz
LTC1562-2 Universal Quad 2-Pole Active RC 20kHz < f
O
< 300kHz
LTC1569-6 Low Power 10-Pole Delay Equalized Elliptic Lowpass f
C
< 80kHz, One Resistor Sets f
C
, SO-8
LTC1569-7 10-Pole Delay Equalized Elliptic Lowpass f
C
< 256kHz, One Resistor Sets f
C
, SO-8
LTC1565-31 650kHz Continuous Time, Linear Phase Lowpass f
C
= 650kHz, Differential In/Out
LTC1568 Very Low Noise 4
th
Order Filter Building Block f
C
< 10MHz
TYPICAL APPLICATIO S
U
FREQUENCY (Hz)
1K
–36
–30
GAIN (dB)
–24
–12
–18
10K 100K 1M
1563 TA12a
–48
–54
–42
–60
6
0
–6
Frequency Response
FREQUENCY (kHz)
5
–24
GAIN (dB)
–21
–15
–12
–9
15
3
1563 TA11a
–18
10
7.5
17.5
12.5 20
–6
–3
0
LP
SA
NC
INVA
NC
LPA
AGND
V
–
V
+
LPB
NC
INVB
NC
SB
NC
EN
V
OUT
V
+
V
IN
1563 TA11
R1
31.6k
R3
200k
R4
200k
R2
4.99k
0.1µF
LTC1563-2
0.1µF
GAIN AT f
CENTER
= MAXIMUM GAIN = 120kHz/f
CENTER
R2 = 4.99k
R3 = R4 = R
R =
31.6k
R1
10
21
f
CENTER
• (f
CENTER
2
+ 5 • 10
11
)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Single Supply, 100kHz, Elliptic Lowpass Filter
Maximum Fcutoff = 120kHz
LP
SA
NC
INVA
NC
LPA
AGND
V
–
V
+
LPB
NC
INVB
NC
SB
NC
EN
V
OUT
V
+
V
IN
1563 TA12
R1
32.4k
R4
32.4k
R5
32.4k
R6
21k
R3
15k
R2
32.4k
0.1µF
LTC1563-2
C
IN
27pF
0.1µF
PASSBAND GAIN = 0dB
STOPBAND ATTENUATION = 26dB AT 1.5X f
CUTOFF
C
IN
= 27pF R2 = R4 = R5 = R1
R1 = R3 = R6 =
3.24 • 10
9
f
CUTOFF
R1
2.16
R1
1.54
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
