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参数资料
| 型号： | MAX2620EUA |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 无绳电话/电话 |
| 英文描述： | 10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PDSO8 |
| 封装： | MICRO, MAX-8 |
| 文件页数： | 8/12页 |
| 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
相关PDF资料 |
PDF描述 |
|---|---|
| MAX2620 | 10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs |
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| MAX2643EVKIT | Evaluation Kits |
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| MAX2642 | Hex inverters 14-SOIC 0 to 70 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2620EUA+ | 功能描述:VCO振荡器 10MHz - 1050MHz RF Oscillator RoHS:否 制造商:Exar 封装 / 箱体:SOIC-14 频率:300 kHz 负载电容: 封装:Reel 电源电压:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作温度:0 C 最大工作温度:+ 70 C |
| MAX2620EUA+T | 功能描述:VCO振荡器 10MHz - 1050MHz RF Oscillator RoHS:否 制造商:Exar 封装 / 箱体:SOIC-14 频率:300 kHz 负载电容: 封装:Reel 电源电压:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作温度:0 C 最大工作温度:+ 70 C |
| MAX2620EUA-T | 功能描述:VCO振荡器 10MHz - 1050MHz RF Oscillator RoHS:否 制造商:Exar 封装 / 箱体:SOIC-14 频率:300 kHz 负载电容: 封装:Reel 电源电压:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作温度:0 C 最大工作温度:+ 70 C |
| MAX2620EVKIT | 功能描述:时钟和定时器开发工具 MAX2620 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Evaluation Modules 类型:Clock Conditioners 工具用于评估:LMK04100B 频率:122.8 MHz 工作电源电压:3.3 V |
| MAX2622EUA | 功能描述:VCO振荡器 855MHz - 881MHz Mono V Ctrld Osc RoHS:否 制造商:Exar 封装 / 箱体:SOIC-14 频率:300 kHz 负载电容: 封装:Reel 电源电压:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作温度:0 C 最大工作温度:+ 70 C |
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