LTC1264-7M Просмотр технического описания (PDF) - Linear Technology
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LTC1264-7M Datasheet PDF : 16 Pages
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LTC1264-7
TYPICAL PERFOR A CE CHARACTERISTICS
THD + Noise vs Input
– 40
– 45
A. PIN 3 AT 2.5V
B. PIN 3 AT 2V
– 50
AB
– 55
– 60
– 65
– 70
– 75
–80 VS = SINGLE 5V
–85 fCLK = 500kHz
fIN = 1kHz
– 90
50m
0.1
INPUT AMPLITUDE (VRMS)
1
1264-7 G26
Table 1. Passband Gain and Phase
VS = ±7.5V, (fCLK/ fC) = 25:1, TA = 25°C
FREQUENCY (kHz)
fCLK = 1MHz (Typical Unit)
0.000
10.000
20.000
30.000
40.000
GAIN (dB)
0.064
0.064
0.058
– 0.639
– 2.741
fCLK = 2MHz (Typical Unit)
0.000
20.000
40.000
60.000
80.000
– 0.006
– 0.006
– 0.164
– 0.958
– 3.003
fCLK = 3MHz (Typical Unit)
0.000
30.000
60.000
90.000
120.000
– 0.067
– 0.067
– 0.287
– 0.944
– 2.545
fCLK = 4MHz (Typical Unit)
0.000
40.000
80.000
120.000
160.000
– 0.031
– 0.031
– 0.078
– 0.332
– 1.275
fCLK = 5MHz (Typical Unit)
0.000
50.000
100.000
150.000
200.000
0.073
0.073
0.365
0.686
0.521
Phase Matching vs Frequency
5
PHASE DIFFERENCE BETWEEN
ANY TWO UNITS (SAMPLE OF
4 50 REPRESENTATIVE UNITS)
VS ≥ ±5V
fCLK ≤ 2.5MHz
3
(fCLK/fC) = 25:1 OR 50:1
TA = 0°C TO 70°C
2
1
0
0
0.2 0.4 0.6 0.8 1.0
FREQUENCY (fCUTOFF/FREQUENCY)
1264-7 G27
Power Supply Current vs Power
Supply Voltage
48
44 fCLK = 1MHz
40
36
32
28
24
– 55°C
20
25°C
16
125°C
12
8
4
0
0 2 4 6 8 10 12 14 16 18 20 22 24
TOTAL POWER SUPPLY VOLTAGE (V)
1264-7 G28
PHASE (DEG)
180.00
81.14
– 19.18
– 120.63
– 221.78
180.00
79.42
– 22.13
– 124.09
– 225.01
180.00
77.49
– 25.54
– 128.51
– 230.19
180.00
75.23
– 30.06
– 135.27
– 239.76
180.00
71.77
– 37.11
– 146.19
– 255.85
Table 2. Passband Gain and Phase
VS = ±7.5V, (fCLK/ fC) = 50:1, TA = 25°C
FREQUENCY (kHz)
fCLK = 1MHz (Typical Unit)
0.000
5.000
10.000
15.000
20.000
GAIN (dB)
– 0.048
– 0.048
– 0.351
– 1.253
– 3.348
fCLK = 2MHz (Typical Unit)
0.000
10.000
20.000
30.000
40.000
– 0.008
– 0.008
– 0.237
– 1.105
– 3.238
fCLK = 3MHz (Typical Unit)
0.000
15.000
30.000
45.000
60.000
0.044
0.044
– 0.065
– 0.863
– 3.022
fCLK = 4MHz (Typical Unit)
0.000
20.000
40.000
60.000
80.000
0.071
0.071
0.039
– 0.664
– 2.755
fCLK = 5MHz (Typical Unit)
0.000
25.000
50.000
75.000
100.000
0.089
0.089
0.141
– 1.437
– 2.421
PHASE (DEG)
180.00
84.51
– 10.87
– 105.53
– 199.61
180.00
83.39
– 13.09
– 108.91
– 204.09
180.00
81.04
– 18.64
– 118.48
– 217.67
180.00
78.04
– 25.06
– 128.54
– 231.42
180.00
74.36
– 32.41
– 139.33
– 246.01
12647fa
8
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