ADL5321-EVALZ AD [Analog Devices], ADL5321-EVALZ Datasheet - Page 12

• Manufacturer Part Number: ADL5321-EVALZ
• Description: 2.3 GHz to 4.0 GHz RF Driver Amplifier
• Manufacturer: AD [Analog Devices]

ADL5321
Table 7. Load Conditions for Gain
Frequency (MHz)
2600
3500
3600
Table 8. Load Conditions for OIP3
Frequency (MHz)
2600
3500
3600
WiMAX OPERATION
Figure 25 shows a plot of adjacent channel leakage ratio (ACLR)
vs. P
64 QAM, single carrier with a 10 MHz channel bandwidth. This
signal is generated by a WiMAX-enabled source and followed
with suitable band-pass filtering. The band-pass filter helps reduce
the adjacent and alternate channel noise and distortion out of
the signal generator down to −63 dB in the adjacent channels
and −76 dB in the alternate channels at 2.6 GHz and −60 dB
at 3.5 GHz.
Below an output power of 7 dBm, measured ADL5321 output
spectral performance is limited by the signal quality from the
signal source used (−63 dB at 2.6 GHz and −60 dB at 3.5 GHz).
At high power operation, input power to the ADL5321 is 1 dBm
for 15 dBm output power and the source ACLR is −60.2 dB. It is
expected that with a better signal source, the ADL5321 output
spectral quality improves further, especially at output power
levels ≤10 dBm. For instance, the
measured ACLR is −69 dB for an output power of −10 dBm.
For output powers up to 10 dBm rms, the ADL5321 adds very
little distortion to the output spectrum. At 2.6 GHz, the ACLR is
−59 dB and a relative constellation error of −46.6 dB (<0.5% EVM)
at an output power of 10 dBm rms.
OUT
for the ADL5321. The signal type used is a WiMAX,
ΓLoad
(Magnitude)
0.6100
0.7686
0.7057
ΓLoad
(Magnitude)
0.4705
0.6911
0.7070
ADL5373
MAX
MAX
ΓLoad (°)
86.63
142.11
140.65
ΓLoad (°)
136.24
162.58
161.81
quadrature modulator
IP3
41.7
41.37
41.29
Gain
15.02
14.02
13.44
MAX
MAX
(dBm)
(dB)
Rev. 0 | Page 12 of 16
Figure 25. ACLR vs. P
Figure 26. RCE/EVM vs. P
–10
–15
–20
–25
–30
–35
–40
–45
–50
–30
–40
–50
–60
–70
–80
–90
–5
–20
0
–10
–15
–5
OUT
ADJ CH LOW 2.6 GHZ
ALT CH LOW 2.6 GHZ
ADJ CH LOW 3.5 GHZ
ALT CH UP 3.5 GHZ
, WiMAX 64 QAM, 10 MHz Bandwidth, Single Carrier
OUT
3.5 GHz
2.6 GHz
–10
, WiMAX 64 QAM, 10 MHz Bandwidth, Single Carrier
0
–5
P
P
OUT
OUT
0
(dBm)
5
(dBm)
5
10
10
15
15
20
20