LTC1063CSW Linear Technology, LTC1063CSW Datasheet - Page 12

• Manufacturer Part Number: LTC1063CSW
• Description: IC FILTR 5TH ORDER LOWPASS16SOIC
• Manufacturer: Linear Technology

Specifications of LTC1063CSW

• Filter Type: Butterworth, Lowpass Switched Capacitor
• Frequency - Cutoff Or Center: 50kHz
• Number Of Filters: 1
• Max-order: 5th
• Voltage - Supply: ±2.375 V ~ 8 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LTC1063CS

APPLICATIO 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 R
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.
TYPICAL APPLICATIO S
LTC1063
12
TANT
1µF
–5V
* IF THE INPUT VOLTAGE CAN EXCEED V
–5V
0.1µF
0.1µF
Cascading Two LTC1063s for Steeper Roll-Off
CONNECT A SIGNAL DIODE BETWEEN PIN 1 AND V
+
Single 5V Supply Operation (f
5V
4.53k
4.99k
V
IN
f
WIDEBAND NOISE = 140µV
ATTENUATION AT f = 2f
*
C
≅ (1/RC)(1/100)
U
1
2
3
4
1
2
3
4
0.1µF
V
LTC1063
LTC1063
IN
U
R
1
2
3
4
LTC1063
C
8
7
6
5
8
7
6
5
+
C
13k
= 60dB
U
,
W
RMS
IN
V
C
OUT
, shown in Table 1.
= 3.4kHz)
8
7
6
5
+
.
V
OUT
200pF
1063 TA04
0.1µF
0.1µF
U
1063 TA03
5V
5V
0.1µF
5V
–7.5V
TANT
V
1µF
–
+
–5V
–5V
0.1µF
0.1µF
* IF THE INPUT VOLTAGE CAN EXCEED V
Sharing Clock for Multichannel Applications
CONNECT A SIGNAL DIODE BETWEEN PIN 1 AND V
100
90
80
70
60
50
40
30
20
0
V
V
IN
V
±7.5 Supply Operation
0.1µF
IN
Adjusting V
IN
1
*
*
Figure 11. Group Delay
* OPTIONAL, 1N4148
1
2
3
4
1
2
3
4
2
1
2
3
4
INPUT FREQUENCY (kHz)
3
LTC1063
LTC1063
LTC1063
OS(OUT)
4
R
BUTTERWORTH
5
(A) LTC1063
6
for
8
7
6
5
8
7
6
5
C
8
7
6
5
+
7
,
V
CORRECTED
(B) GROUP
OUT
DELAY
≅2.5mV
8
0.1µF
V
f
OUT
CLK
9
1063 F11
10k
+
.
10
V
V
7.5V
1063 TA06
OUT
+
0.1µF
0.1µF
*
5V
5V
7.5V
10k
1063 TA05
LT1009
1063fa