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ADRF6620ACPZ-R7 Scheda tecnica(PDF) 34 Page - Analog Devices

Il numero della parte ADRF6620ACPZ-R7
Spiegazioni elettronici  700 MHz to 2700 MHz Rx Mixer with Integrated IF DGA, Fractional-N PLL, and VCO
PDF  52 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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ADRF6620ACPZ-R7 Scheda tecnica(HTML) 34 Page - Analog Devices

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ADRF6620
Data Sheet
Rev. 0 | Page 34 of 52
As an example, the MIXER_RDAC, MIXER_CDAC, and MIXER_
BIAS settings of the ADRF6620 were carefully selected, based on
three individual goals that resulted in three sets of MIXER_RDAC,
MIXER_CDAC, and MIXER_BIAS values. The first goal was for
optimized IIP3. To achieve the most optimal IIP3 performance,
the MIXER_BIAS was set to a higher current setting, and MIXER_
RDAC and MIXER_CDAC were selected at the peaks. This
configuration allowed for the most optimal IIP3 performance.
However, it also consumed the most power, and the noise figure
was degraded. The second goal was to achieve a balance among
IIP3, the noise figure, and power consumption. Finally, the third
goal was for an optimized noise figure. This configuration resulted
in the lowest power consumption while IIP3 was not optimized.
Table 15 summarizes the test conditions; Table 16 shows the cor-
responding MIXER_RDAC, MIXER_CDAC, and MIXER_BIAS
values. The resulting IIP3 and noise figure performance for the
specific MIXER_RDAC, MIXER_CDAC, and MIXER_BIAS
settings are shown in Figure 84.
0
5
10
15
20
25
30
35
40
45
50
0.6
1.1
1.6
2.1
2.6
RF FREQUENCY (GHz)
IIP3
NOISE
FIGURE
IIP3: OPT IIP3
IIP3: OPT NOISE FIGURE
IIP3: IIP3 AND NOISE FIGURE BALANCE
NF: OPT IIP3
NF: OPT NOISE FIGURE
NF: IIP3 AND NOISE FIGURE BALANCE
Figure 84. Example IIP3 and Noise Figure Optimization
Table 15. Mixer Optimization Summary
Parameter
Test Conditions/Comments
Optimized IIP3
MIXER_RDAC, MIXER_CDAC, and MIXER_BIAS were configured for optimized IIP3 performance.
Noise Figure, IIP3, and
Power Consumption
Balance
MIXER_BIAS was limited to 0, 1, or 2 decimal for improved noise figure while allowing IIP3 to degrade. MIXER_RDAC and
MIXER_CDAC were chosen for optimized IIP3 because MIXER_RDAC and MIXER_CDAC have a larger impact on IIP3
than on noise figure.
Optimized Noise Figure
MIXER_BIAS was set to 0 decimal for the best noise figure. MIXER_RDAC and MIXER_CDAC were chosen for optimized
IIP3 because they have a larger impact on IIP3 than on noise figure.
Table 16. Recommended BAL_CIN, BAL_COUT, MIXER_RDAC, MIXER_CDAC, and MIXER_BIAS Settings (in Decimal)
RF Frequency
(MHz)
BAL_CIN
BAL_COUT
Optimized IIP3
IIP3 and Noise Figure Balance
Optimized Noise Figure
RDAC
CDAC
BIAS
RDAC
CDAC
BIAS
RDAC
CDAC
BIAS
600
7
7
6
10
4
4
15
2
4
15
0
700
7
7
5
14
4
4
15
2
4
15
0
800
5
5
3
13
3
3
14
2
2
15
0
900
3
4
0
15
0
3
13
2
2
14
0
940
3
3
5
12
4
5
11
2
2
13
0
1000
2
3
5
11
4
4
10
2
3
11
0
1100
1
2
5
10
4
3
10
1
2
11
0
1200
1
2
5
9
4
3
9
1
2
10
0
1300
0
2
8
8
4
3
9
1
2
10
0
1400
0
2
6
7
4
4
8
1
2
9
0
1500
0
2
6
7
4
5
7
2
3
8
0
1600
0
2
8
7
4
5
7
2
2
8
0
1700
0
1
6
6
4
5
6
2
4
7
0
1800
0
1
9
6
4
5
6
2
4
7
0
1840
0
1
9
6
5
5
6
2
3
7
0
1900
0
1
9
6
5
6
5
2
3
7
0
2000
0
1
7
5
5
3
6
0
3
6
0
2100
1
1
9
5
5
5
5
1
3
6
0
2140
1
1
9
5
4
5
5
1
3
6
0
2200
2
0
7
4
4
5
5
1
3
6
0
2300
2
0
7
4
4
5
5
1
3
6
0
2400
1
0
7
4
4
5
5
1
3
6
0
2500
1
0
7
4
4
5
5
1
3
6
0
2600
1
0
7
4
4
5
5
1
3
6
0
2700
1
0
7
4
4
5
5
1
3
6
0
2800
1
0
7
4
4
4
15
2
4
15
0
2900
1
0
7
4
4
4
15
2
4
15
0
3000
0
0
7
4
4
3
14
2
2
15
0



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