LTC1562 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1562' PDF : 28 Pages View PDF
LTC1562
TYPICAL APPLICATION
Dual 4th Order 12dB Gaussian Lowpass Filter
RIN1
VIN2
5V
0.1µF
RIN3
VIN1
RIN2
1
20
INV B
INV C
RQ1
2
19
RQ2
V1 B
V1 C
R21
3
V2 B
18
R22
V2 C
5 V+ LTC1562 V– 16
6
15
1µF
SHDN
AGND
8
V2 A
R23
9
V1 A
13
V2 D
12
R24
V1 D
RQ3
10
INV A
11
INV D
RQ4
RIN4
1562 TA16a
VOUT2
VOUT1
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V –
Amplitude Response
20
0
– 20
fC = 64kHz
fC = 32kHz
– 40
fC = 16kHz
– 60
– 80
1
10
100 300
FREQUENCY (kHz)
1562 TA16b
4-Level Eye Diagram
fC = 16kHz, Data Clock = 32kHz
1V/DIV
10µs/DIV
fC (Hz)
16k
32k
64k
RIN1 = RIN3
105k
26.1k
8.45k
R21 = R23
105k
26.1k
6.49k
RQ1 = RQ3
34k
16.9k
8.45k
RIN2 = RIN4
340k
84.5k
16.2k
R22 = R24
340k
84.5k
21k
RQ2 = RQ4
34k
16.9k
8.45k
1562 TA16c
RELATED PARTS
PART NUMBER
LTC1068, LTC1068-X
LTC1560-1
LTC1562-2
DESCRIPTION
Quad 2-Pole Switched Capacitor Building Block Family
5-Pole Elliptic Lowpass, fC = 1MHz/0.5MHz
Quad 2-Pole Active RC, 20kHz to 300kHz
COMMENTS
Clock-Tuned
No External Components, SO8
Same Pinout as the LTC1562
28 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 qFAX:(408)434-0507 q www.linear-tech.com
1562f LT/TP 0199 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1998
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