LTC1064 Linear Technology, LTC1064 Datasheet - Page 15

• Manufacturer Part Number: LTC1064
• Description: Low Noise/ Fast/ Quad Universal Filter Building Block
• Manufacturer: Linear Technology

V
V
RELATED PARTS
PART NUMBER
LTC1061
LTC1164
LTC1264
TYPICAL APPLICATIONS
IN2
8V
IN1
R13a
R11a
RESISTOR VALUES:
R11 = 50k
R12 = 15.4k R22 = 10k R32 = 88.7k
R13 = 10k
R14 = 9.09k R24 = 10k R34 = 63.4k
V
IN1
8V
C2
1000pF
0.1 F
C1
1000pF
R13b
R11b
R11
Clock-Tunable, 30kHz to 90kHz 8th Order Notch
Filter Providing Notch Depth in Excess of 60dB
R21 = 5k
R23 = 10k R33 = 100k
DESCRIPTION
Triple Universal Filter Building Block
Low Power, Quad Universal Filter Building Block
High Speed, Quad Universal Building Block
Dual 5th Order Chebyshev Lowpass Filter with
50kHz and 100kHz Cutoff Frequencies
R22
R32
R42
0.1 F
R12
R31
R21
R23
R33
R43
R41
R31
R21
C2
C1
2pF
22pF
R31 = 50k
10
11
12
10
11
12
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
INV B
HPB/NB
BPB
LPB
SB
AGND
V
SA
LPA
BPA
HPA/NA
INV A
INV B
HPB/NB
BPB
LPB
SB
AGND
V
SA
LPA
BPA
HPA/NA
INV A
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.
+
+
R42 = 48.7k
R44 = 12.4k
LTC1064
LTC1064
U
HPC/NC
HPC/NC
50/100
50/100
INV C
INV D
INV C
INV D
HPD
HPD
BPC
LPD
BPD
BPD
LPC
CLK
BPC
LPC
CLK
LPD
R
R
R
SC
V
SC
V
–
–
G
L4
H4
24
23
22
21
20
19
18
17
16
15
14
13
24
23
22
21
20
19
18
17
16
15
14
13
= 68.1k
= 10k (0.1%)
= 10k (0.1%)
5MHz
T
2
L
–8V
0.1%
0.1%
R23
R33
R44
R34
R24
R13
R14
R
R
R42
R32
R22
R12
H4
R24
R34
R44
L4
R14
C3
4pF
39pF
C1 = C2 = C3 = 15pF
THE NOTCH DEPTH FROM
5kHz TO 30kHz IS 50dB
WIDEBAND NOISE = 300 V
–
+
0.1 F
RESISTOR VALUES:
R11a = 4.32k R21 = 11.8k R31 = 29.4k R41 = 10k
R11b = 27.4k R22 = 20k
R12 = 10.5k
R13a = 3k
R13b = 29.4k
R14 = 10.5k
LT1056
0.1 F
f
CLK
R
G
V
f
V
f
–8V
C
C
5MHz
OUT2
OUT1
= 50kHz
COMMENT
Three Filter Building Blocks in a 20-Pin Package
Low Noise, Low Power Pin-for-Pin LTC1064 Compatible
Up to 250kHz Center Frequency
= 100kHz
R23 = 11.8k R33 = 29.4k R43 = 10k
R24 = 20k
1064 TA21
V
OUT
RMS
R32 = 21.5k R42 = 31.6k
R34 = 21.6k R44 = 31.6k
–105
–100
–110
– 15
–30
–45
–60
–75
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
15
10
0
0
10k
10
V
f
CLK
1064 TA19
S
= 8V
20
= 4MHz
Amplitude Response
Amplitude Response
INPUT FREQUENCY (Hz)
INPUT FREQUENCY (kHz)
50k
30
PASSBAND RIPPLE = 0.2dB
100k
BW
40
LTC1064
50
15
60
1064 TA20
1064 TA22
1M
70