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LT5514 Datasheet(PDF) 7 Page - Linear Technology

Part # LT5514
Description  Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT5514 Datasheet(HTML) 7 Page - Linear Technology

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LT5514
5514f
TYPICAL PERFOR A CE CHARACTERISTICS
Harmonic Distortion vs Attenuation
Step at POUT = 7dBm,
Freq = 50MHz, ROUT = 200Ω
Harmonic Distortion vs POUT at
50MHz, Max Gain, ROUT = 200Ω
(Standard Mode) TA = 25°C, VCC = 5V, VCCO = 5V,
ENA = ENB = 3V, control input levels VIL = 0.6V, VIH = 3V unless otherwise noted. (Test circuit shown in Figure 9)
Harmonic Distortion vs POUT at
50MHz, Max Gain, ROUT = 100Ω
Minimum Gain vs VCC at 120MHz,
ROUT = 100Ω
Harmonic Distortion vs
Attenuation Step at POUT = 7dBm,
Freq = 50MHz, ROUT = 200Ω
VCC (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
25
°C
85
°C
–40
°C
Maximum Gain vs VCC at
120MHz, ROUT = 100Ω
VCC (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
25
°C
85
°C
–40
°C
ATTENUATION STEP (dB)
0
–78
–75
–72
915
5514 G12
–81
–84
36
12
18
21
–87
–90
HD2
FIGURE 10 TEST CIRCUIT
HD3
PGA0 = LOW
HD3
PGA0 = HIGH
ATTENUATION STEP (dB)
0
–78
–75
–72
915
5514 G12
–81
–84
36
12
18
21
–87
–90
HD2
HD3
PGA0 = LOW
HD3
PGA0 = HIGH
POUT (dBm)
–3
–70
–55
–50
21
5514 G14
–75
–80
–100
3
9
15
0
6
12
18
–90
–40
–45
–60
–65
–85
–95
HD2
HD3
HD4
HD5
POUT (dBm)
–5
–70
–55
–50
19
5514 G15
–75
–80
–100
1
7
13
–2
4
10
16
–90
–40
–45
–60
–65
–85
–95
HD2
HD3
HD4
HD5
FREQUENCY (MHz)
0
6.0
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
18
24
30
15
5514 G17
12
6
15
21
27
9
3
0
369
12
18
21
FIGURE 10 TEST CIRCUIT
ATTENUATION STEP (dB)
0
–139
–138
–137
–136
–135
–133
3
69
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, ROUT = 200Ω
Noise Figure vs Frequency



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