Datasheet

18
LTC1562
1562fa
(Basic)
1
2
3
5
6
8
9
10
20
19
18
16
15
13
12
11
INV B
V1 B
V2 B
V
+
SHDN
V2 A
V1 A
INV A
INV C
V1 C
V2 C
V
–
AGND
V2 D
V1 D
INV D
LTC1562
R
IN2
R
IN4
R
IN1
V
IN
V
OUT
1562 TA08a
R
IN3
V
–
V
+
R
Q1
R21
R23
0.1µF
0.1µF
R
Q3
R24
R
Q4
R
Q2
R22
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V
–
FREQUENCY (kHz)
40
GAIN (dB)
–10
10
30
120
1562 TA08b
–30
–50
–20
0
20
–40
–60
–70
60 80 100 140
160 180
f
CENTER
= 100kHz
Amplitude Response
8th Order Bandpass Filter
–3dB BW =
f
CENTER
, Gain = 10
f
CENTER
f
CENTER
f
CENTER
f
CENTER
f
CENTER
f
CENTER
f
CENTER
10 80kHz 90kHz 100kHz 110kHz 120kHz 130kHz 140kHz
Side B
R
IN1
4.64k 5.23k 6.34k 5.11k 5.11k 5.49k 5.62k
R
Q1
46.4k 52.3k 42.2k 38.3k 34.8k 32.4k 30.1k
R21 12.4k 15.4k 10.0k 8.25k 6.98k 5.9k 5.11k
Sides A, C, D
R
IN2
, R
IN3
, R
IN4
46.4k 52.3k 42.2k 38.3k 34.8k 32.4k 30.1k
R
Q2
, R
Q3
, R
Q4
46.4k 52.3k 42.2k 38.3k 34.8k 32.4k 30.1k
R22, R23, R24 12.4k 15.4k 10.0k 8.25k 6.98k 5.90k 5.11k
All resistor values are ±1%
TYPICAL APPLICATIONS
U
8th Order Bandpass (High Frequency) Filter
–3dB Bandwidth =
Center Frequency
, Gain = 10
10