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| 型號(hào)： | ADL5380ACPZ-WP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類(lèi)： | 調(diào)制器/解調(diào)器 |
| 英文描述： | 400 MHz - 6000 MHz RF/MICROWAVE I/Q DEMODULATOR |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, MO-220-VGGD-8, LFCSP-24 |
| 文件頁(yè)數(shù)： | 17/36頁(yè) |
| 文件大?。?/td> | 833K |
| 代理商： | ADL5380ACPZ-WP |
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ADL5380
Rev. 0 | Page 24 of 36
RF INPUT
The RF inputs have a differential input impedance of approximately
50 Ω. For optimum performance, drive the RF port differentially
through a balun. The recommended balun for each performance
level includes the following:
Up to 3 GHz is the Mini-Circuits TC1-1-13.
From 3 GHz to 4 GHz is the Johanson Technology
3600BL14M050.
From 4.9 GHz to 6 GHz is the Johanson Technology
AC couple the RF inputs to the device with 100 pF capacitors.
Figure 79 shows the RF input configuration.
RF INPUT
RFIN
BALUN
RFIP
100pF
21
22
07
58
5-
0
79
Figure 79. RF Input
The differential RF port return loss is characterized, as shown
in Figure 80.
0
0.51.01.52.02.53.03.54.04.55.05.56.0
–28
–26
–24
–22
–20
–18
–16
–14
–12
–10
–30
–8
RF FREQUENCY (GHz)
DI
F
E
RE
NT
IAL
RE
T
URN
L
O
S
RF
P
O
RT
(d
B)
07
58
5-
08
0
Figure 80. Differential RF Port Return Loss
BASEBAND OUTPUTS
The baseband outputs QHI, QLO, IHI, and ILO are fixed
impedance ports. Each baseband pair has a 50 Ω differential
output impedance. The outputs can be presented with differential
loads as low as 200 Ω (with some degradation in gain) or high
impedance differential loads (500 Ω or greater impedance yields
the same excellent linearity) that is typical of an ADC. The TCM9-1
9:1 balun converts the differential IF output to a single-ended
output. When loaded with 50 Ω, this balun presents a 450 Ω
load to the device. The typical maximum linear voltage swing for
these outputs is 2 V p-p differential. The output 3 dB bandwidth
is 390 MHz. Figure 81 shows the baseband output configuration.
07
58
5-
08
1
16
15
3
4
IHI
ILO
QHI
QLO
ADL5380
Figure 81. Baseband Output Configuration
ERROR VECTOR MAGNITUDE (EVM) PERFORMANCE
EVM is a measure used to quantify the performance of a digital
radio transmitter or receiver. A signal received by a receiver has all
constellation points at their ideal locations; however, various
imperfections in the implementation (such as magnitude
imbalance, noise floor, and phase imbalance) cause the actual
constellation points to deviate from their ideal locations.
In general, a demodulator exhibits three distinct EVM
limitations vs. received input signal power. At strong signal
levels, the distortion components falling in-band due to non-
linearities in the device cause strong degradation to EVM
as signal levels increase. At medium signal levels, where the
demodulator behaves in a linear manner and the signal is well
above any notable noise contributions, the EVM has a tendency to
reach an optimum level determined dominantly by the quadrature
accuracy of the demodulator and the precision of the test equipment.
As signal levels decrease, such that noise is a major contribution,
the EVM performance vs. the signal level exhibits a decibel-for-
decibel degradation with decreasing signal level. At lower signal
levels, where noise proves to be the dominant limitation, the
decibel EVM proves to be directly proportional to the SNR.
The ADL5380 shows excellent EVM performance for various
modulation schemes. Figure 82 shows the EVM performance of
the ADL5380 with a 16 QAM, 200 kHz low IF.
–50
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
–90
–70
–50
–30
–10
10
EV
M
(
d
B
)
RF INPUT POWER (dBm)
0
758
5-
0
82
Figure 82. EVM, RF = 900 MHz, IF = 200 kHz vs.
RF Input Power for a 16 QAM 160ksym/s Signal
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| ADL5380-EVALZ | 功能描述:EVAL BOARD FOR ADL5380 制造商:analog devices inc. 系列:- 零件狀態(tài):有效 類(lèi)型:解調(diào)器 頻率:400MHz ~ 6GHz 配套使用產(chǎn)品/相關(guān)產(chǎn)品:ADL5380 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
| ADL5380XCPZ | 制造商:Analog Devices 功能描述: |
| ADL5382 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:700 MHz to 2.7 GHz Quadrature Demodulator |
| ADL5382ACPZ-R7 | 功能描述:IC DEMOD QUAD 700M2.7GHZ 24LFCSP RoHS:是 類(lèi)別:RF/IF 和 RFID >> RF 解調(diào)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:解調(diào)器 LO 頻率:- RF 頻率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 噪音數(shù)據(jù):6.36dB 電流 - 電源:41.5mA 電源電壓:2.7 V 封裝/外殼:28-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:28-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| ADL5382ACPZ-WP | 制造商:Analog Devices 功能描述:ADL5382: 700 MHZ TO 2700MHZ QUADRATURE DEMODULATOR - Waffle Pack |
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