LTC1562 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1562' PDF : 28 Pages View PDF
TYPICAL APPLICATIONS (Basic)
8th Order Wideband Bandpass Filter
fCENTER = 50kHz, – 3dB BW 40kHz to 60kHz
CIN1
22pF
RIN2
69.8k
1
20
VIN
RQ1 59k
INV B
2
INV C
19
RQ2 48.7k
V1 B
V1 C
R21 56.2k 3
V2 B
18
V2 C
R22 34.8k
V+
5 V+ LTC1562 V– 16
V–
0.1µF
6
15
1µF
SHDN
AGND
R23 63.4k
RQ3 82.5k
8
V2 A
9
V1 A
10
INV A
13
V2 D
12
V1 D
11
INV D
R24 28.7k
RQ4 100k
CIN3
27pF
CIN4 47pF
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V –
VOUT
1562 TA09a
8th Order Highpass 0.05dB Ripple Chebyshev Filter fCUTOFF = 30kHz
CIN1
150pF
1
20
CIN
RQ1, 10.2k
INV B
2
V1 B
INV C
19 RQ2, 22.1k
V1 C
CIN2
R21, 35.7k 3
V2 B
18 R22, 66.5k 150pF
V2 C
5V
0.1µF
5 V+ LTC1562 V– 16
6
SHDN
15
AGND
–5V
0.1µF
CIN3
150pF
R23, 107k
RQ3, 54.9k
8
V2 A
9
V1 A
10
INV A
13
V2 D
12
V1 D
11
INV D
R24, 127k
RQ4, 98.9k
CIN4
150pF
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V –
TOTAL OUTPUT NOISE = 40µVRMS
VOUT
1562 TA10a
2nd Order 30kHz Highpass Cascaded with 6th Order 138kHz Lowpass
CIN1
150pF
VIN
RQ1, 30.1k
R21, 110k
5V
0.1µF
R23, 5.23k
RQ3, 14k
RIN2, 5.23k
1
INV B
20
INV C
2
V1 B
19
V1 C
3
V2 B
18
V2 C
5 V+ LTC1562 V– 16
6
SHDN
15
AGND
8
V2 A
13
V2 D
9
V1 A
12
V1 D
10
INV A
11
INV D
RQ2, 5.11k
R22, 5.23k
–5V
0.1µF
R24, 5.23k
RQ4, 3.74k
RIN3, 8.06k
RIN4, 3.4k
VOUT
1562 TA11a
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V –
ALL RESISTORS = 1% METAL FILM
LTC1562
10
0
– 10
– 20
– 30
– 40
– 50
– 60
20
Amplitude Response
FREQUENCY (kHz)
100
1562 TA09b
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
1k
Amplitude Response
10k
100k
FREQUENCY (Hz)
1M
1562 TA10b
20
10
0
–10
–20
–30
–40
–50
–60
–70
–80
10
Amplitude Response
100
FREQUENCY (kHz)
400
1562 TA11b
19
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