參數(shù)資料
型號： LTC1569-7
廠商： Linear Technology Corporation
英文描述： Linear Phase, DC Accurate, Tunable, 10th Order Lowpass Filter(線性脈沖，直流精度，可調(diào)諧的10階低通濾波器)
中文描述： 線性相位，直流準(zhǔn)確，可調(diào)諧，第10階低通濾波器（線性脈沖，直流精度，可調(diào)諧的10階低通濾波器）
文件頁數(shù)： 10/12頁
文件大?。?/td> 227K
代理商： LTC1569-7
10
LTC1569-7
Single 3V Operation, AC Coupled Input,
128kHz Cutoff Frequency
1
8
2
7
3
6
4
5
V
OUT
R
EXT
= 10k
V
IN
1
μ
F
3V
1
μ
F
0.1
μ
F
2k
3.48k
3V
1569-7 TA02
LTC1569-7
IN
+
IN
–
GND
V
–
OUT
V
+
R
X
DIV/CLK
f
CUTOFF
=
n = 1, 4, 16 FOR PIN 5 AT
GROUND, OPEN, V
+
128kHz
n = 1
(
)
10k
R
EXT
(
)
1
8
2
7
3
6
4
5
V
OUT
R
EXT
= 10k
V
IN
1
μ
F
3V
100pF
1
μ
F
2k
3.48k
3V
1569-7 TA04
LTC1569-7
IN
+
IN
–
GND
V
–
OUT
V
+
R
X
DIV/CLK
f
CUTOFF
=
n = 1, 4, 16 FOR PIN 5 AT
GROUND, OPEN, V
+
128kHz
n = 4
(
)
10k
R
EXT
(
)
Single 3V Supply Operation, DC Coupled,
32kHz Cutoff Frequency
Single 5V Operation, 300kHz Cutoff Frequency,
DC Coupled Differential Inputs with Balanced Input Impedance
1
8
2
7
3
6
4
5
V
OUT
R
EXT
= 4.1k
V
IN+
V
IN–
1
μ
F
5V
1
μ
F
27k
5V
1569-7 TA03
IN
OUT
GND
LT
1460-2.5
(SOT-23)
LTC1569-7
f
CUTOFF
~
n = 1, 4, 16 FOR PIN 5 AT
GROUND, OPEN, V
+
128kHz
n = 1
10k
4.1k
IN
+
IN
–
GND
V
–
OUT
V
+
R
X
DIV/CLK
TYPICAL APPLICATIO S
Single 3V, AC Coupled Input,
128kHz Cutoff Frequency
FREQUENCY (Hz)
0
300k
80k
100k
160k 180k
240k 260k
120k 140k
200k 220k
280k
G
G
1569-7 TA02a
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
16
μ
s
14
μ
s
12
μ
s
140k
0
20k
80k
100k
40k
60k
120k
every clock period. Therefore, the sampling frequency is
twice the clock frequency and 64 times the filter cutoff
frequency. Input signals with frequencies near 2 f
CLK
±
f
CUTOFF
will be aliased to the passband of the filter and
appear at the output unattenuated.
Power Supply Current
The power supply current depends on the operating mode.
When the LTC1569-7 is in the divide-by-1 mode, or when
clocked externally, the supply current is reduced by 50%
for supply voltages below 4V. For the divide-by-4 and
divide-by-16 modes, the supply current is reduced by
60% relative to the current when clocked externally,
independent of the power supply voltage. Power supply
current versus cutoff frequency for various operating
modes is shown in the “Typical Performance Characteris-
tics” section.
APPLICATIO
S I
FOR
ATIO
U
W
U
U
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參數(shù)描述
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