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參數(shù)資料
| 型號： | MAX2620EUA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PDSO8 |
| 封裝： | MICRO, MAX-8 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 105K |
| 代理商： | MAX2620EUA |
M
10MHz to 1050MHz Integrated
RF Osc illator with Buffered Outputs
8
_______________________________________________________________________________________
Keeping the resonant tank circuit’s real component less
than one-half the magnitude of the negative real com-
ponent ensures that oscillations will start. After start-up,
the oscillator’s negative resistance decreases, primarily
due to gain compression, and reaches equilibrium with
the real component (the circuit losses) in the resonant
tank circuit. Making the resonant tank circuit reactance
tunable (e.g., through use of a varactor diode) allows
for tuneability of the oscillation frequency, as long as
the oscillator exhibits negative resistance over the
desired tuning range. See Figures 3 and 4.
The negative resistance of the MAX2620 TANK pin can
be optimized at the desired oscillator frequency by
proper selection of feedback capacitors C3 and C4.
For example, the one-port characteristics of the device
are given as a plot of 1/S11 in the Typical Operating
Characteristics. 1/S11 is used because it maps inside
the unit circle Smith chart when the device exhibits
negative resistance (reflection gain).
V
TUNE
V
CC
VCC1
TANK
FDBK
SHDN
8
7
6
5
OUT
VCC2
GND
OUT
1
2
3
4
V
CC
V
CC
V
CC
1k
D1
D1 = SMV1200-155 DUAL VARACTOR
C17
33pF
10
51
0.01
μ
F
10
μ
H
0.01
μ
F
OUT TO
MIXER
C6
33pH
C5
150pF
C3
270pF
1000pF
1000pF
1000pF
27pF
1000pF
C4
270pF
SHDN
L1
2.2
μ
H
OUT TO
SYNTHESIZER
MAX2620
Figure 3. 10MHz VCO LC Resonator
相關PDF資料 |
PDF描述 |
|---|---|
| MAX2620 | 10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs |
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| MAX2643EVKIT | Evaluation Kits |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2620EUA+ | 功能描述:VCO振蕩器 10MHz - 1050MHz RF Oscillator RoHS:否 制造商:Exar 封裝 / 箱體:SOIC-14 頻率:300 kHz 負載電容: 封裝:Reel 電源電壓:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作溫度:0 C 最大工作溫度:+ 70 C |
| MAX2620EUA+T | 功能描述:VCO振蕩器 10MHz - 1050MHz RF Oscillator RoHS:否 制造商:Exar 封裝 / 箱體:SOIC-14 頻率:300 kHz 負載電容: 封裝:Reel 電源電壓:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作溫度:0 C 最大工作溫度:+ 70 C |
| MAX2620EUA-T | 功能描述:VCO振蕩器 10MHz - 1050MHz RF Oscillator RoHS:否 制造商:Exar 封裝 / 箱體:SOIC-14 頻率:300 kHz 負載電容: 封裝:Reel 電源電壓:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作溫度:0 C 最大工作溫度:+ 70 C |
| MAX2620EVKIT | 功能描述:時鐘和定時器開發(fā)工具 MAX2620 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
| MAX2622EUA | 功能描述:VCO振蕩器 855MHz - 881MHz Mono V Ctrld Osc RoHS:否 制造商:Exar 封裝 / 箱體:SOIC-14 頻率:300 kHz 負載電容: 封裝:Reel 電源電壓:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作溫度:0 C 最大工作溫度:+ 70 C |
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