LTC1164-6CS Linear Technology, LTC1164-6CS Datasheet - Page 11

• Manufacturer Part Number: LTC1164-6CS
• Description: Low Power 8th Order Pin Selectable Elliptic or Linear Phase Lowpass Filter
• Manufacturer: Linear Technology

TYPICAL
NOTES:
1. CLOCK-TUNABLE OVER ONE DECADE
2. BOTH INPUT AND OUTPUT RC ACTIVE
V
f
ATTENUATION AT 10kHz = –48dB
C
IN
OF CUTOFF FREQUENCY.
FILTERS ARE 0.1dB CHEBYSHEV FILTERS
WITH 1kHz RIPPLE BANDWIDTH.
= 1kHz
V
5V
IN
0.1 F
1.15k
V
16TH ORDER LOWPASS FILTER
FIXED f
f
(f
1/2 R1C1 = 1/2 R2C2 = 2f
CUTOFF
R1
C1
S
CLK
= SINGLE 5V, I
/f
789
1 F
C
R1
CUTOFF
) = 54:1
= 10kHz
0.01 F
0.1 F
76.8k
+
R2
C1
A
, f
0.001 F
CLK
PPLICATI
–10
–20
–30
–40
–50
–60
–70
–80
–90
S
10
= 5mA TYP
15k
= 540kHz
10k
5.62k
0
C3
R3
1
V
I
ELLIPTIC LOWPASS
f
f
S
CLK
CUTOFF
CUTOFF
S
0.022 F
= 5mA, 16TH ORDER
= SINGLE 5V
C2
540kHz
Gain vs Frequency
= 10kHz
1
2
3
4
5
6
7
FREQUENCY (kHz)
+
–
LT1013
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.
O
Active RC Input Anti-Aliasing Filter and Output Smoothing Filter
LTC1164-6
1/2
IC1
U
8th Order Low Power, Clock-Tunable Elliptic Filter with
S
10
14
13
12
11
10
9
8
f
V
Single 5V, 16th Order Lowpass Filter
CLK
+
1164-6 TA04
0.1 F
1k
5V
30
f
CUTOFF
100Hz f
10kHz f
1
2
3
4
5
6
7
5V
LTC1164-6
0.1 F
= 10kHz
CLK
C
1kHz
100kHz
–40
–50
14
13
12
11
10
–45
–55
–60
–65
–70
–75
–80
–85
–90
9
8
1
V
IS = 5mA, 16TH ORDER
ELLIPTIC LOWPASS
V
f
f
1
2
3
4
5
6
7
CLK
C
S
IN
= 10kHz
THD + Noise vs Frequency
= SINGLE 5V
= 0.5V
= 540kHz
LTC1164-6
f
V
16.9k
CLK
R1
–
IC2
RMS
FREQUENCY (kHz)
97.6k
0.1 F
R2
14
13
12
11
10
V
9
8
–
f
ATTENUATION AT 10kHz = –30dB
C
= 1kHz
5
C2
0.001 F
7.89k
1164-6 TA05
5V
R2
10
LTC1164-6
–
+
LT1013
1/2
0.0047 F
C1
C2
0.001 F
1164-6 TA03
V
OUT
11
1164-6 TA10
V
OUT