- 您現在的位置：買賣IC網 > PDF目錄16549 > EVAL-ADF4351EB1Z (Analog Devices Inc)BOARD 1 EVAL FOR ADF4351 PDF資料下載
參數資料
| 型號： | EVAL-ADF4351EB1Z |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 20/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD 1 EVAL FOR ADF4351 |
| 標準包裝： | 1 |
| 系列： | * |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁當前第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
Data Sheet
ADF4351
Rev. 0 | Page 27 of 28
OUTPUT MATCHING
For optimum operation, the output of the ADF4351 can be
matched in a number of ways; the most basic method is to con-
nect a 50 resistor to VVCO. A dc bypass capacitor of 100 pF is
connected in series, as shown in Figure 37. Because the resistor
is not frequency dependent, this method provides a good broad-
band match. When connected to a 50 load, this circuit typically
gives a differential output power equal to the value selected by
Bits[DB4:DB3] in Register 4 (R4).
100pF
09800-
037
RFOUT
VVCO
50
Figure 37. Simple Output Stage
A better solution is to use a shunt inductor (acting as an RF choke)
to VVCO. This solution gives a better match and, therefore, more
output power.
Experiments have shown that the circuit shown in Figure 38
provides an excellent match to 50 for the W-CDMA UMTS
Band 1 (2110 MHz to 2170 MHz). The maximum output power
in this case is approximately 5 dBm. Both single-ended archi-
tectures can be examined using the EVAL-ADF4351EB1Z
evaluation board.
3.9nF
1nF
09800-
038
RFOUT
VVCO
50
Figure 38. Optimum Output Stage
If differential outputs are not needed, the unused output can be
terminated, or both outputs can be combined using a balun.
A balun using discrete inductors and capacitors can be imple-
mented with the architecture shown in Figure 39. The LC balun
comprises Component L1 and Component C1. L2 provides a dc
path for RFOUTA, and Capacitor C2 is used for dc blocking.
L1
C1
50
RFOUTA+
RFOUTA–
VVCO
C2
L2
09800-
039
Figure 39. LC Balun for the ADF4351
Table 8. LC Balun Components
Frequency
Range (MHz)
Inductor L1 (nH)
Capacitor C1 (pF)
RF Choke
Inductor L2 (nH)
DC Blocking
Capacitor C2 (pF)
Measured Output
Power (dBm)
137 to 300
100
10
390
1000
9
300 to 460
51
5.6
180
120
10
400 to 600
30
5.6
120
10
600 to 900
18
4
68
120
10
860 to 1240
12
2.2
39
10
9
1200 to 1600
5.6
1.2
15
10
9
1600 to 3600
3.3
0.7
10
8
2800 to 3800
2.2
0.5
10
8
相關PDF資料 |
PDF描述 |
|---|---|
| GEM25DRYF | CONN EDGECARD 50POS DIP .156 SLD |
| GEM28DRTF | CONN EDGECARD 56POS DIP .156 SLD |
| H3AWH-4006G | IDC CABLE - HSC40H/AE40G/HPL40H |
| GEM28DRKF | CONN EDGECARD 56POS DIP .156 SLD |
| M1CXA-5036J | IDC CABLE - MKC50A/MC50G/X |
相關代理商/技術參數 |
參數描述 |
|---|---|
| EVAL-ADF4360-0EB1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Integrated Synthesizer and VCO |
| EVAL-ADF4360-1EB1 | 制造商:Analog Devices 功能描述:Evaluation Board For ADF4360-1 |
| EVAL-ADF4360-1EBZ1 | 功能描述:BOARD EVALUATION FOR ADF4360-1 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態(tài) LED 已供物品:板 |
| EVAL-ADF4360-2EB1 | 制造商:Analog Devices 功能描述:EVALUATION BOARD FOR ADF4360-2 |
| EVAL-ADF4360-2EBZ1 | 功能描述:BOARD EVALUATION FOR ADF4360-2 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標準包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
發(fā)布緊急采購，3分鐘左右您將得到回復。