LTC1063CSW-TRPBF Ver la hoja de datos (PDF) - Linear Technology
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LTC1063CSW-TRPBF Datasheet PDF : 12 Pages
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APPLICATI S I FOR ATIO
Group Delay
The group delay of the LTC1063 closely approximates the
delay of an ideal 5-pole Butterworth lowpass filter (Figure
11, Curve A). To linearize the group delay of the LTC1063
(Figure 11, Curve B), use an input resistor about six times
higher than the maximum value of RIN, shown in Table 1.
The passband response of the group delay corrected filter
approximates a 5-pole Bessel response while its transi-
tion band rolls off like a Butterworth.
LTC1063
100
90
(A) LTC1063
80
BUTTERWORTH
70
60
(B) GROUP
DELAY
50
CORRECTED
40
30
20
0 1 2 3 4 5 6 7 8 9 10
INPUT FREQUENCY (kHz)
1063 F10
Figure 11. Group Delay
TYPICAL APPLICATI S
Single 5V Supply Operation (fC = 3.4kHz)
1µF +
TANT
5V
4.99k
4.53k
VIN 1
2
0.1µF
3
4
LTC1063
8
7
VOUT
6
5V
5
0.1µF
13k
200pF
1063 TA03
Cascading Two LTC1063s for Steeper Roll-Off
VIN* 1
8
2
7
LTC1063
3
6
5V
– 5V
4
5
0.1µF
R
C
0.1µF
1
8
2
7
VOUT
LTC1063
3
6
– 5V
4
5
0.1µF
fC ≅ (1/RC)(1/100)
WIDEBAND NOISE = 140µVRMS
ATTENUATION AT f = 2fC = 60dB
* IF THE INPUT VOLTAGE CAN EXCEED V+,
CONNECT A SIGNAL DIODE BETWEEN PIN 1 AND V+.
5V
0.1µF
1063 TA04
V–
–7.5V
+
1µF
TANT
Adjusting VOS(OUT) for
±7.5 Supply Operation
7.5V
10k
1
8
VIN
2
7
3 LTC1063 6
4
5
0.1µF
* OPTIONAL, 1N4148
10k
LT1009
≅2.5mV
VOUT
V+
7.5V
fCLK
0.1µF
*
1063 TA07
Sharing Clock for Multichannel Applications
VIN* 1
8
2
7 VOUT
LTC1063
3
6
5V
– 5V
4
5
0.1µF
R
C
0.1µF
– 5V
0.1µF
1
8
VIN*
2
7
LTC1063
3
6
4
5
VOUT
5V
0.1µF
* IF THE INPUT VOLTAGE CAN EXCEED V+,
CONNECT A SIGNAL DIODE BETWEEN PIN 1 AND V+. 1063 TA05
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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