LTC1062CS Linear Technology, LTC1062CS Datasheet - Page 8

• Manufacturer Part Number: LTC1062CS
• Manufacturer: Linear Technology

Specifications of LTC1062CS

• Architecture: Switched Capacitor
• Cutoff Frequency: 20KHz
• Order Filter (max): 5th
• Single Supply Voltage (typ): 9/12/15V
• Dual Supply Voltage (typ): ±3/±5V
• Power Supply Requirement: Single/Dual
• Single Supply Voltage (min): 5V
• Single Supply Voltage (max): 18V
• Dual Supply Voltage (min): ±2.5V
• Dual Supply Voltage (max): ±9V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Filter Type: Low Pass Filter
• Lead Free Status / RoHS Status: Not Compliant

8
LTC1062
TYPICAL APPLICATIO S
HIGH DC INPUT = 100V
V
–
= –5V
Filtering AC Signals from High DC Voltages
V
EXAMPLE:
f
THE HIGH DC INPUT AND ACTS AS 5TH ORDER LP FILTER
FOR THE AC SIGNALS RIDING ON THE DC
CLK
IN
= 100KHz, f
25.8k
R
V
+
= 5V
C
1
2
3
4
= 1kHz. THE FILTER ACCURATELY PASSES
C
0.01µF
FB
AGND
V
DIVIDER
RATIO
–
LTC1062
V
Adding an External (R1, C1) to Eliminate the Clock Feedthrough and
IN
B
C
OUT
V
OUT
OSC
V
IN
U
R
+
1062 TA05
V
8
7
6
5
–
to Improve the High Frequency Attenuation Floor
AC Coupling an External CMOS Clock Powered
1
2
3
4
309.6k
C
V
12R
FB
AGND
V
DIVIDER
RATIO
C
0.01µF
–
CLK IN = f
–
LTC1062
from a Single Positive Supply, V
1
2
3
4
C
FB
AGND
V
DIVIDER
RATIO
DC OUTPUT
–
B
C
LTC1062
C
OUT
OUT
OSC
• 100
V
+
8
7
6
5
B
C
OUT
OUT
OSC
V
+
1062 TA04
8
7
6
5
10R
R1
V
f
CLK
+
V
V
+
C1
0.01C
OUT
100k
1062 TA03
0.01µF
–0.6
–0.8
–0.2
–0.4
–1.0
–1.2
–1.4
EXTERNAL
0.2
–
+
BUFFER
+
0
Passband Amplitude Response for the
0.01
High DC Accurate 5th Order Filter
V
f
CLK
S
= ±5V
= 100kHz
V
0
+
V
OUT
f
IN
0.1
/f
C
1062 TA06
1
1062fd