LTC1062CSW Linear Technology, LTC1062CSW Datasheet - Page 11

• Manufacturer Part Number: LTC1062CSW
• Description: IC FILTR 5TH ORDR LOWPASS 16SOIC
• Manufacturer: Linear Technology

Specifications of LTC1062CSW

• Filter Type: Butterworth, Lowpass Switched Capacitor
• Frequency - Cutoff Or Center: 20kHz
• Number Of Filters: 1
• Max-order: 5th
• Voltage - Supply: 5 V ~ 16 V, ±2.5 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: LTC1062CS

TYPICAL APPLICATIO S
7th Order 100Hz Lowpass Filter with Continuous Output Filtering, Output Buffering and Gain Adjustment
V
IN
THE LTC1052 IS CONNECTED AS A 2ND ORDER SALLEN AND KEY LOWPASS FILTER WITH A CUTOFF
FREQUENCY EQUAL TO THE CUTOFF FREQUENCY OF THE LTC1062. THE ADDITIONAL FILTERING
ELIMINATES ANY 10kHz CLOCK FEEDTHROUGH PLUS DECREASES THE WIDEBAND NOISE OF THE FILTER
DC OUTPUT OFFSET (REFERRED TO A DC GAIN OF UNITY) = 5µV MAX
WIDEBAND NOISE (REFERRED TO A DC GAIN OF UNITY) = 60µV
OUTPUT FILTER COMPONENT VALUES
DC GAIN
2.6k
TANTALUM
10
1
SOLID
10µF
–5V
5V
+
U
3.57k
R3
1
2
3
4
∞
1µF
5V
FB
AGND
V
DIVIDER
RATIO
–
25k
25k
32.4k
LTC1062
R4
0
V
IN
Single 5V Supply 5th Order LP Filter
14.3k
FOR A 10Hz FILTER: R = 29.4k, C = 1µF, f
THE FILTER IS MAXIMALLY FLAT FOR
R1
B
C
46k
OUT
R1
OUT
OSC
V
R
+
53.6k
274k
8
7
6
5
5V
R2
5V
10kHz
CLK IN
1
2
3
4
0.01µF
C
0.1µF
FB
AGND
V
DIVIDER
RATIO
C1
–
LTC1062
1062 TA13
12R
0.033µF
0.02µF
C1
R2
C2
B
C
OUT
OUT
OSC
V
+
R3
8
7
6
5
RMS
C2
0.1µF
5V
CLK
2πRC
BUFFERED
OUTPUT
CLK
1
2
3
=
= 1kHz
–
+
1.84
LTC1052
f
1
C
5V
1062 TA14
4
7
C
8
R4
DC ACCURATE
OUTPUT
6
0.1µF
–5V
V
OUT
LTC1062
11
1062fd