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參數(shù)資料
| 型號： | LT5514 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | ADC |
| 英文描述： | Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain |
| 中文描述： | 超低失真IF放大器/ ADC的數(shù)字控制增益驅(qū)動 |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 275K |
| 代理商： | LT5514 |
7
LT5514
5514f
TYPICAL PERFOR U
ENA = ENB = 3V, control input levels V
IL
= 0.6V, V
IH
= 3V unless otherwise noted. (Test circuit shown in Figure 9)
Harmonic Distortion vs Attenuation
Step at P
OUT
= 7dBm,
Freq = 50MHz, R
OUT
= 200
Harmonic Distortion vs P
OUT
at
50MHz, Max Gain, R
OUT
= 200
(Standard Mode) T
A
= 25
°
C, V
CC
= 5V, V
CCO
= 5V,
Harmonic Distortion vs P
OUT
at
50MHz, Max Gain, R
OUT
= 100
Minimum Gain vs V
CC
at 120MHz,
R
OUT
= 100
Harmonic Distortion vs
Attenuation Step at P
OUT
= 7dBm,
Freq = 50MHz, R
OUT
= 200
V
CC
(V)
4.5
7.4
7.6
7.8
5.3
5514 G10
7.2
7.0
4.7
4.9
5.1
5.5
6.8
6.6
6.4
G
25
°
C
85
°
C
–40
°
C
Maximum Gain vs V
CC
at
120MHz, R
OUT
= 100
V
CC
(V)
4.5
30.0
30.2
30.4
5.3
5514 G11
29.8
29.6
4.7
4.9
5.1
5.5
29.4
29.2
29.0
G
25
°
C
85
°
C
–40
°
C
ATTENUATION STEP (dB)
0
H
–78
–75
–72
9
15
5514 G12
–81
–84
3
6
12
18
21
–87
–90
HD2
FIGURE 10 TEST CIRCUIT
HD3
PGA0 = LOW
HD3
PGA0 = HIGH
ATTENUATION STEP (dB)
0
H
–78
–75
–72
9
15
5514 G12
–81
–84
3
6
12
18
21
–87
–90
HD2
HD3
PGA0 = LOW
HD3
PGA0 = HIGH
P
OUT
(dBm)
–3
H
–70
–75
–80
–85
–55
–60
–65
–50
21
5514 G14
–100
3
9
15
0
6
12
18
–90
–95
–40
–45
HD2
HD3
HD4
HD5
P
OUT
(dBm)
–5
H
–70
–75
–80
–85
–55
–60
–65
–50
19
5514 G15
–100
1
7
13
–2
4
10
16
–90
–95
–40
–45
HD2
HD3
HD4
HD5
FREQUENCY (MHz)
0
6.0
N
6.5
7.0
7.5
8.0
100
200
300
400
5514 G16
8.5
9.0
50
150
250
350
MAX GAIN
FIGURE 10 TEST CIRCUIT
1.5dB ATTENUATION STEP
(PGA0 = LOW)
3dB ATTENUATION STEP
(PGA1 = LOW)
ATTENUATION STEP (dB)
0
N
18
24
30
15
5514 G17
12
6
15
21
27
9
3
0
3
6
9
12
18
21
FIGURE 10 TEST CIRCUIT
ATTENUATION STEP (dB)
0
–139
N
–138
–137
–136
–135
–133
3
6
9
12
5514 G18
18
15
21
–134
PGA1 = HIGH
FIGURE 10 TEST CIRCUIT
PGA1 = LOW
NF vs Attenuation Step at
Freq = 100MHz
Output Noise Floor vs Attenuation
Step, Freq = 100MHz, R
OUT
= 200
Noise Figure vs Frequency
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