參數(shù)資料
型號(hào)： LTC1563-3
廠商： Linear Technology Corporation
英文描述： Active RC, 4th Order Lowpass Filter Family(有源RC 4階低通濾波器)
中文描述： 有源RC，四階低通濾波器系列（有源區(qū)局4階低通濾波器）
文件頁數(shù)： 4/20頁
文件大?。?/td> 269K
代理商： LTC1563-3
4
LTC1563-2/LTC1563-3
ELECTRICAL CHARACTERISTICS
The
G
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C.
V
S
= Single 4.75V, EN pin to logic “l(fā)ow,” Gain = 1, R
FIL
= R11 = R21 = R31 = R12 = R22 = R32, specifications apply to both the high
speed (HS) and low power (LP) modes unless otherwise noted.
PARAMETER
Stopband Gain, HS Mode, f
C
= 25.6kHz
V
S
= 4.75V, R
FIL
= 100k
Passband Gain, HS Mode, f
C
= 256kHz
V
S
= 4.75V, R
FIL
= 10k
Stopband Gain, HS Mode, f
C
= 256kHz
V
S
= 4.75V, R
FIL
= 10k
Passband Gain, LP Mode, f
C
= 25.6kHz
V
S
= 4.75V, R
FIL
= 100k
Stopband Gain, LP Mode, f
C
= 25.6kHz
V
S
= 4.75V, R
FIL
= 100k
LTC1563-3 Transfer Function Characteristics
Cutoff Frequency Range, f
C
HS Mode
(Note 2)
Cutoff Frequency Range, f
C
LP Mode
(Note 2)
Cutoff Frequency Accuracy, HS Mode
f
C
= 25.6kHz
CONDITIONS
Test Frequency = 51.2kHz (2 f
C
)
Test Frequency = 102.4kHz (4 f
C
)
Test Frequency = 25.6kHz (0.1 f
C
)
Test Frequency = 128kHz (0.5 f
C
)
Test Frequency = 400kHz (1.56 f
C
)
Test Frequency = 500kHz (1.95 f
C
)
Test Frequency = 2.56kHz (0.1 f
C
)
Test Frequency = 12.8kHz (0.5 f
C
)
Test Frequency = 51.2kHz (2 f
C
)
Test Frequency = 102.4kHz (4 f
C
)
MIN
TYP
–24
–48
0
0
–15.7
–23.3
0
–0.02
–24
–48
MAX
–21.5
–46
0.2
0.5
–13.5
–21.5
0.25
0.6
–22
–46.5
UNITS
d B
G
G
dB
dB
dB
dB
dB
dB
dB
dB
dB
G
G
–0.2
–0.5
G
G
G
G
–0.25
–0.6
G
G
V
S
= 3V
V
S
= 4.75V
V
S
=
±
5V
V
S
= 2.7V
V
S
= 4.75V
V
S
=
±
5V
V
S
= 3V, R
FIL
= 100k
V
S
= 4.75V, R
FIL
= 100k
V
S
=
±
5V, R
FIL
= 100k
V
S
= 3V, R
FIL
= 10k
V
S
= 4.75V, R
FIL
= 10
V
S
=
±
5V, R
FIL
= 10k
V
S
= 2.7V, R
FIL
= 100k
V
S
= 4.75V, R
FIL
= 100k
V
S
=
±
5V, R
FIL
= 100k
(Note 3)
Test Frequency = 2.56kHz (0.1 f
C
)
Test Frequency = 12.8kHz (0.5 f
C
)
Test Frequency = 51.2kHz (2 f
C
)
Test Frequency = 102.4kHz (4 f
C
)
Test Frequency = 25.6kHz (0.1 f
C
)
Test Frequency = 128kHz (0.5 f
C
)
Test Frequency = 400kHz (1.56 f
C
)
Test Frequency = 500kHz (1.95 f
C
)
Test Frequency = 2.56kHz (0.1 f
C
)
Test Frequency = 12.8kHz (0.5 f
C
)
Test Frequency = 51.2kHz (2 f
C
)
Test Frequency = 102.4kHz (4 f
C
)
G
G
G
0.256
0.256
0.256
0.256
0.256
0.256
–3
–3
–3
–2
–2
–2
–4
–4
–4
256
256
256
25.6
25.6
25.6
5.5
5.5
5.5
6
6
6
7
7
7
kHz
kHz
kHz
kHz
kHz
kHz
%
%
%
%
%
%
%
%
%
G
G
G
G
G
G
±
2
±
2
±
2
±
2
±
2
±
2
±
3
±
3
±
3
±
1
Cutoff Frequency Accuracy, HS Mode
f
C
= 256kHz
G
G
G
Cutoff Frequency Accuracy, LP Mode
f
C
= 25.6kHz
G
G
G
Cutoff Frequency Temperature Coefficient
Passband Gain, HS Mode, f
C
= 25.6kHz
V
S
= 4.75V, R
FIL
= 100k
Stopband Gain, HS Mode, f
C
= 25.6kHz
V
S
= 4.75V, R
FIL
= 100k
Passband Gain, HS Mode, f
C
= 256kHz
V
S
= 4.75V, R
FIL
= 10k
Stopband Gain, HS Mode, f
C
= 256kHz
V
S
= 4.75V, R
FIL
= 10k
Passband Gain, LP Mode, f
C
= 25.6kHz
V
S
= 4.75V, R
FIL
= 100k
Stopband Gain, LP Mode, f
C
= 25.6kHz
V
S
= 4.75V, R
FIL
= 100k
G
ppm/
°
C
G
G
–0.2
–1.0
–0.03
–0.72
–13.6
–34.7
–0.03
–0.72
–8.3
–13
–0.03
–0.72
–13.6
–34.7
0.2
–0.25
–10
–31
0.2
–0.5
–6
–10.5
0.2
–0.25
–11
–32
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
G
G
G
G
–0.2
–1.1
G
G
G
G
–0.2
–1.0
G
G
Note 1:
Absolute Maximum Ratings are those value beyond which the life
of a device may be impaired.
Note 2:
The minimum cutoff frequency of the LTC1563 is arbitrarily listed
as 256Hz. The limit is arrived at by setting the maximum resistor value
limit at 10M
. The LTC1563 can be used with even larger valued resistors.
When using very large values of resistance careful layout and thorough
assembly practices are required. There may also be greater DC offset at
high temperatures when using such large valued resistors.
Note 3:
The cutoff frequency temperature drift at low frequencies is as
listed. At higher cutoff frequencies (approaching 25.6kHz in low power
mode and approaching 256kHz in high speed mode) the internal
amplifier’s bandwidth can effect the cutoff frequency. At these limits the
cutoff frequency temperature drift is
±
15ppm/
°
C.
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