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參數(shù)資料
| 型號(hào)： | LTC1264-7C |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Linear Phase, Group Delay Equalized, 8th Order Lowpass Filter |
| 中文描述： | 線性相位，群時(shí)延均衡，8階低通濾波器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 301K |
| 代理商： | LTC1264-7C |
7
LTC1264-7
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
INPUT AMPLITUDE (V
RMS
)
50m
0.1
1
1264-7 G26
V
S
= SINGLE 5V
f
CLK
= 500kHz
f
IN
= 1kHz
–90
T
–80
–50
–70
–65
–55
–40
–45
–60
–75
–85
A
B
A. PIN 3 AT 2.5V
B. PIN 3 AT 2V
THD + Noise vs Input
TOTAL POWER SUPPLY VOLTAGE (V)
0
P
48
44
40
36
32
28
24
20
16
12
8
4
0
2
6
12
16
1264-7 G28
20
4
8
10
14
18
22 24
–55°C
25°C
125°C
f
CLK
= 1MHz
Power Supply Current vs Power
Supply Voltage
Table 1. Passband Gain and Phase
V
S
=
±
7.5V, (f
CLK
/f
C
) = 25:1, T
A
= 25
°
C
FREQUENCY (kHz)
f
CLK
= 1MHz (Typical Unit)
0.000
10.000
20.000
30.000
40.000
f
CLK
= 2MHz (Typical Unit)
0.000
20.000
40.000
60.000
80.000
GAIN (dB)
PHASE (DEG)
0.064
0.064
0.058
–0.639
–2.741
180.00
81.14
–19.18
–120.63
–221.78
–0.006
–0.006
–0.164
–0.958
–3.003
180.00
79.42
–22.13
–124.09
–225.01
f
CLK
= 3MHz (Typical Unit)
0.000
30.000
60.000
90.000
120.000
f
CLK
= 4MHz (Typical Unit)
0.000
40.000
80.000
120.000
160.000
f
CLK
= 5MHz (Typical Unit)
0.000
50.000
100.000
150.000
200.000
–0.067
–0.067
–0.287
–0.944
–2.545
180.00
77.49
–25.54
–128.51
–230.19
–0.031
–0.031
–0.078
–0.332
–1.275
180.00
75.23
–30.06
–135.27
–239.76
0.073
0.073
0.365
0.686
0.521
180.00
71.77
–37.11
–146.19
–255.85
Table 2. Passband Gain and Phase
V
S
=
±
7.5V, (f
CLK
/f
C
) = 50:1, T
A
= 25
°
C
FREQUENCY (kHz)
f
CLK
= 1MHz (Typical Unit)
0.000
5.000
10.000
15.000
20.000
f
CLK
= 2MHz (Typical Unit)
0.000
10.000
20.000
30.000
40.000
f
CLK
= 3MHz (Typical Unit)
0.000
15.000
30.000
45.000
60.000
f
CLK
= 4MHz (Typical Unit)
0.000
20.000
40.000
60.000
80.000
f
CLK
= 5MHz (Typical Unit)
0.000
25.000
50.000
75.000
100.000
GAIN (dB)
PHASE (DEG)
–0.048
–0.048
–0.351
–1.253
–3.348
180.00
84.51
–10.87
–105.53
–199.61
–0.008
–0.008
–0.237
–1.105
–3.238
180.00
83.39
–13.09
–108.91
–204.09
0.044
0.044
–0.065
–0.863
–3.022
180.00
81.04
–18.64
–118.48
–217.67
0.071
0.071
0.039
–0.664
–2.755
180.00
78.04
–25.06
–128.54
–231.42
0.089
0.089
0.141
–1.437
–2.421
180.00
74.36
–32.41
–139.33
–246.01
Phase Matching vs Frequency
FREQUENCY (f
CUTOFF
/FREQUENCY)
0
P
3
4
5
0.8
1264-7 G27
2
1
0
0.2
0.4
0.6
1.0
PHASE DIFFERENCE BETWEEN
ANY TWO UNITS (SAMPLE OF
50 REPRESENTATIVE UNITS)
V
S
≥
±5V
f
CLK
≤
2.5MHz
(f
CLK
/f
C
) = 25:1 OR 50:1
T
A
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