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參數資料
| 型號： | ADL5387ACPZ-WP1 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 50 MHz to 2 GHz Quadrature Demodulator |
| 中文描述： | 50兆赫至2千兆赫正交解調器 |
| 文件頁數： | 19/28頁 |
| 文件大小： | 648K |
| 代理商： | ADL5387ACPZ-WP1 |
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ADL5387
As an example, a second-order, Butterworth, low-pass filter
design is shown in Figure 56 where the differential load impedance
is 500 Ω, and the source impedance of the ADL5387 is 50 Ω.
The normalized series inductor value for the 10-to-1, load-to-
source impedance ratio is 0.074 H, and the normalized shunt
capacitor is 14.814 F. For a 10.9 MHz cutoff frequency, the
single-ended equivalent circuit consists of a 0.54 μH series
inductor followed by a 433 pF shunt capacitor.
The balanced configuration is realized as the 0.54 μH inductor
is split in half to realize the network shown in Figure 56.
Rev. 0 | Page 19 of 28
0
V
S
R
S
2
R
S
R
L
R
S
2
R
L
2
R
L
2
433pF
V
S
R
S
= 50
R
L
= 500
0.54μH
0.27μH
0.27μH
433pF
BALANCED
CONFIGURATION
DENORMALIZED
SINGLE-ENDED
EQUIVALENT
V
S
R
S
= 50
= 0.1
R
L
= 500
L
N
= 0.074H
C
N
14.814F
NORMALIZED
SINGLE-ENDED
CONFIGURATION
= 25
= 25
= 250
= 250
f
C
= 10.9MHz
f
C
= 1Hz
Figure 56. Second-Order, Butterworth, Low-Pass Filter Design Example
A complete design example is shown in Figure 59. A sixth-order
Butterworth differential filter having a 1.9 MHz corner frequency
interfaces the output of the ADL5387 to that of an ADC input.
The 500 Ω load resistor defines the input impedance of the
ADC. The filter adheres to typical direct conversion WCDMA
applications, where 1.92 MHz away from the carrier IF frequency,
1 dB of rejection is desired and 2.7 MHz away 10 dB of rejection
is desired.
Figure 57 and Figure 58 show the measured frequency response
and group delay of the filter.
10
5
–20
–15
–10
–5
0
0
3
3.0
2.5
2.0
1.5
1.0
0.5
M
FREQUENCY (MHz)
0
.5
Figure 57. Baseband Filter Response
900
800
700
600
500
400
300
200
100
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
D
FREQUENCY (MHz)
0
Figure 58. Baseband Filter Group Delay
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相關代理商/技術參數 |
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|---|---|
| ADL5387-EVALZ | 功能描述:BOARD EVAL FOR ADL5387 RoHS:是 類別:RF/IF 和 RFID >> RF 評估和開發套件，板 系列:- 標準包裝:1 系列:- 類型:GPS 接收器 頻率:1575MHz 適用于相關產品:- 已供物品:模塊 其它名稱:SER3796 |
| ADL5387-EVALZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:50 MHz to 2 GHz Quadrature Demodulator |
| ADL5390 | 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MHz to 6 GHz Broadband Quadrature Modulator |
| ADL5390ACPZ | 制造商:Analog Devices 功能描述:RF/IF VECTOR MLTPLR 24LFCSP - Tape and Reel 制造商:Analog Devices 功能描述:RF VECTOR MULTIPLIER 2.3GHZ SMD 制造商:Analog Devices 功能描述:RF Vector Multiplier,wideband,ADL5390 |
| ADL5390ACPZ-REEL7 | 功能描述:IC MULTIPLIER VECTOR 24LFCSP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:- 標準包裝:100 系列:* |
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