LTC1064-1 Ver la hoja de datos (PDF) - Linear Technology
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LTC1064-1 Datasheet PDF : 8 Pages
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LTC1064-1
TYPICAL APPLICATIO S
Transitional Elliptic-Bessel Dual 5th Order Lowpass Filter
C
VIN1
V+
0.1µF
C
47.5k
VIN2
1
14
INV C R(h, I)
47.5k
–
2
VIN
13
COMP2*
3
AGND
V– 12
4
LTC1064-1
V+
fCLK
11 fCLK = 200
× f–3dB
5
AGND
10
NC
LT1056
V– +
0.1µF
VOUT1
6
COMP1*
7
INV A
9
VOUT
8
NC
1064 TA06
VOUT2
C
=
5
f–3dB
(µF)
OUTPUT1 WIDEBAND NOISE: 50µVRMS
OUTPUT2 WIDEBAND NOISE: 110µVRMS
Transient Response to a 2V Step
Input VOUT2
15
0
–15
–30
–45
–60
–75
–90
–105
1
Amplitude Response
f–3dB = 5kHz
fCLK = 1MHz
VOUT2 VOUT1
10
fIN (kHz)
100
1064 TA09
Transient Response to a 2V Step
Input VOUT1
1V/DIV
1V/DIV
6
0.1ms/DIV
0.1ms/DIV
Adding an Output Buffer-Filter to Eliminate Any Clock Feedthrough
Over a 10:1 Clock Range, for fCLK = 2kHz to 20kHz
VIN
V+
0.1µF
1
14
INV C R(h, I)
2
VIN
13
COMP2*
3
AGND
V– 12
4
LTC1064-1
V+
fCLK
11
5
AGND
10
NC
6
COMP1*
7
INV A
9
VOUT
8
NC
V–
0.1µF
4.99k 4.99k
430pF
10k
200pF
–
LT1056
+
50Ω
0.027µF
VOUT
1064 TA10
10641fa
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