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ADL5721ACPZN-R7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
Data Sheet ADL5721
Rev. 0 | Page 9 of 15
–30
–25
–20
–15
–10
–5
0
5
10
15
20
7.1
7.2
7.3 7.4 7.5 7.6
7.7
7.8
7.9
8.0 8.1 8.2
8.3
8.4
8.5
INPUT IP3 (dBm)
FREQUENCY (GHz)
T
A
= –40°C
T
A
= +25°C
T
A
= +85°C
14258-019
Figure 19. Input IP3 vs. Frequency for Various Temperatures
–30
–25
–20
–15
–10
–5
0
5
10
15
20
7.1
7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3
8.4 8.5
INPUT IP3 (dBm)
FREQUENCY (GHz)
14258-020
3.1V/1.65V
3.3V/1.8V
3.5V/1.95V
Figure 20. Input IP3 vs. Frequency for Various Supply Voltages
–30
–25
–20
–15
–10
–5
0
7.1
7.2 7.3 7.4 7.5
7.6 7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
INPUT RETURN LOSS (dB)
FREQUENCY (GHz)
T
A
= –40°C
T
A
= +25°C
T
A
= +85°C
14258-021
Figure 21. Input Return Loss vs. Frequency for Various Temperatures
–30
–25
–20
–15
–10
–5
0
7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5
OUTPUT RETURN LOSS (dB)
FREQUENCY (GHz)
T
A
= –40°C
T
A
= +25°C
T
A
= +85°C
14258-022
Figure 22. Output Return Loss vs. Frequency for Various Temperatures
ADL5721 Data Sheet
Rev. 0 | Page 10 of 15
THEORY OF OPERATION
The ADL5721 is a narrow-band, high performance, low noise
amplifier targeting microwave radio link receiver designs. The
monolithic SiGe design is optimized for microwave radio link
bands ranging from 5.9 GHz to 8.5 GHz.
The unique design of the ADL5721 offers a single-ended 50 Ω
input impedance and provides a 100 Ω balanced differential
output. This LNA is ideal for driving Analog Devices differential
downconverters and RF sampling ADCs.
The ADL5721 provides cost-effective noise figure performance
without requiring more expensive III-V compounds process
technolog y.
This LNA uses a band switch feature to allow the input P1dB
and noise figure to trade off for optimum system performance.
The BAND pin allows the user to select between two frequency
ranges. A logic low of 0 V on the BAND pin selects the lower
frequency range from 5.9 GHz to 7.2 GHz, whereas a logic high
of 1.8 V selects the higher frequency range from 7.1 GHz to
8.5 GHz.
The ADL5721 is available in an 8-lead, 2.00 mm × 2.00 mm
LFCSP package, and operates over the temperature range of
−40°C to +85°C.
Data Sheet ADL5721
Rev. 0 | Page 11 of 15
APPLICATIONS INFORMATION
LAYOUT
Solder the exposed pad on the underside of the ADL5721 to a
low thermal and electrical impedance ground plane. This pad is
typically soldered to an exposed opening in the solder mask on
the evaluation board. Connect these ground vias to all other
ground layers on the evaluation board to maximize heat
dissipation from the device package.
14258-023
Figure 23. Evaluation Board Layout for the ADL5721 Package
DIFFERENTIAL vs. SINGLE-ENDED OUTPUT
This section provides the test results that compare the ADL5721
using a differential vs. a single-ended output. When using the
device as a single-ended output, use the RFOP output of the
evaluation board and terminate RFON to 50 Ω. Note that the
converse can be done as well; however, doing so produces slightly
different results from the plots shown in this section, caused by
some amplitude imbalance between the two differential ports,
RFOP and RFON. The output trace and connector loss were not
deembedded for these measurements.
Note that this performance is typical and not guaranteed.
35
30
25
20
15
10
5
0
5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2
GAIN (dB)
FREQUENCY (GHz)
14258-024
Figure 24. Gain vs. Frequency, BAND = 0 V
0
35
30
25
20
15
10
5
7.1 7.2 7.3 7.4 7.5 7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
GAIN (dB)
FREQUENCY (GHz)
14258-027
Figure 25. Gain vs. Frequency, BAND = 1.8 V
0
1
2
3
4
5
6
7
8
9
10
5.9
6.0 6.1
6.2
6.3 6.4 6.5 6.6
6.7
6.8
6.9 7.0 7.1 7.2
NOISE FIGURE (dB)
FREQUENCY (GHz)
14258-025
Figure 26. Noise Figure vs. Frequency, BAND = 0 V
0
1
2
3
4
5
6
7
8
9
10
7.1
7.2
7.3 7.4 7.5 7.6
7.7 7.8 7.9
8.0 8.1 8.2 8.3 8.4
8.5
NOSIE FIGURE (dB)
FREQUENCY (GHz)
14258-028
Figure 27. Noise Figure vs. Frequency, BAND = 1.8 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ADL5721ACPZN-R7

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Buy ADL5721ACPZN-R7
Manufacturer:
Analog Devices Inc.
Description:
RF Amplifier Microwave HIR
Lifecycle:
New from this manufacturer.
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