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ADL5566ACPZ-R7 数据表(PDF) 17 Page - Analog Devices

部件名 ADL5566ACPZ-R7
功能描述  4.5 GHz Ultrahigh Dynamic Range, Dual Differential Amplifier
PDF  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADL5566ACPZ-R7 数据表(HTML) 17 Page - Analog Devices

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Data Sheet
ADL5566
Rev. C | Page 17 of 24
To find RSERIES for a given AV gain and RL, use the following:
RSERIES =
80
10
500
−


+
L
L
V
R
R
A
(3)
To calculate the AV gain for a given RSERIES and RL, use the following:
+
×
+
=
L
L
SERIES
GAIN
R
R
R
A
10
80
500
(4)
–5
–4
–3
–2
–1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1M
10M
100M
1G
10G
FREQUENCY (Hz)
Figure 42. SDD21, VPOS = 3.3 V, Three Gains, 25°C
The necessary shunt component, RSHUNT, to match to the source
impedance, RS, can be expressed with the following:
160
2
1
1
1
+
−
=
SERIES
S
SHUNT
R
R
R
(5)
The voltage gain for multiple shunt resistor values are summarized
in Table 5. The source resistance and input impedance need
careful attention when using Equation 5. The reactance of the
input impedance of the ADL5566 and the ac coupling capacitors
must be considered before assuming that they make a negligible
contribution.
–120
–115
–110
–105
–100
–95
–90
–85
–80
–75
–70
–65
–60
–55
–50
0
50
100
150
200
250
300
350
400
450
500
FREQUENCY (MHz)
HD2 3.3V
HD3 3.3V
IMD 3.3V
HD2 5V
HD3 5V
IMD 5V
Figure 43. IMD, HD2, and HD3 vs. Frequency, AV = 6 dB, 2 V p-p Output,
VPOS = 3.3 and VPOS = 5 V
Table 5. Differential Gain Adjustment Using Series Resistor
Target Gain (dB)
Actual Gain (dB)
RS (Ω)
RSERIES (Ω)1
RSHUNT (Ω)1
0
−0.1
50
396.2
52.8
1
+1.2
50
344.4
53.1
2
+2.1
50
298.3
53.5
3
+2.9
50
257.1
54
4
+4.1
50
220.5
54.5
5
+5.1
50
187.8
55.1
6
+6.1
50
158.7
55.8
7
+6.9
50
132.7
56.7
8
+8.1
50
109.6
57.6
9
+8.9
50
89
58.7
10
+10
50
70.6
60
11
+11.1
50
54.2
61.4
12
+12
50
39.6
63.2
13
+12.8
50
26.6
65.3
14
+14
50
15
67.9
15
+15.1
50
4.8
70.9
16
+15.8
50
0
72.7
1
The resistor values are rounded to the nearest real resistor value.



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