Datasheet
LTC1064
14
1064fb
INV B
HPB/NB
BPB
LPB
SB
AGND
V
+
SA
LPA
BPA
HPA/NA
INV A
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
INV C
HPC/NC
BPC
LPC
SC
V
–
CLK
50/100
LPD
BPD
HPD
INV D
LTC1064
R22
R32
R42
R21
R31
R41
R11
R
L2
R44
R34
R24
7.5V
0.1µF
–7.5V
–7.5V
V
OUT
V
IN
1064 TA13
R43
R33
R23
RESISTOR VALUES:
R11 = 19.1k R21 = 10k R31 = 13.7k R41 = 15.4k R
L1
= 14k R
H1
= 30.9k
R22 = 10k R32 = 23.7k R42 = 10.2k R
L2
= 26.7k R
H2
= 76.8k
R23 = 11.3k R33 = 84.5k R43 = 10k R
L3
= 10k R
H3
= 60.2k
R24 = 15.4k R34 = 15.2k R44 = 42.7k
NOTE: FOR t
CUTOFF
>15kHz, ADD A 5pF CAPACITOR ACROSS R41 AND R43
f
CLK
≤ 2MHz
R
L1
R
H1
R
H2
R
L3
R
H3
0.1µF
TYPICAL APPLICATIO S
U
FREQUENCY (kHz)
0
0
–15
–30
–45
–60
–75
–90
–105
30 50
1064 TA14
10 20
40 60 70
V
OUT
/V
IN
(dB)
8TH ORDER CLOCK-SWEEPABLE LOWPASS
ELLIPTIC ANTIALIASING FILTER MAINTAINS,
FOR 0.1Hz ≤ f
CUTOFF
≤ 20kHz, A ±0.1dB MAX
PASSBAND ERROR AND 72dB MIN STOPBAND
ATTENUATION AT 1.5 × f
CUTOFF
TOTAL WIDEBAND NOISE = 150µV
RMS
,
THD = 70dB (0.03%) FOR V
IN
= 3V
RMS
,
f
CLK
/f
CUTOFF
= 100:1. THIS FILTER AVAILABLE
AS LTC1064-1 WITH INTERNAL THIN FILM
RESISTORS
8th Order Clock-Sweepable Lowpass Elliptic Antialiasing Filter
Amplitude Response