- 您现在的位置：买卖IC网 > PDF目录383349 > MAX2752 (Maxim Integrated Products, Inc.) CLAMP PDF资料下载
参数资料
| 型号： | MAX2752 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | CLAMP |
| 中文描述： | 2.4GHz单芯片压控振荡器 |
| 文件页数： | 5/6页 |
| 文件大小： | 149K |
| 代理商： | MAX2752 |
M
2.4GHz Monolithic
Voltage-Controlled Oscillators
_______________________________________________________________________________________
5
Detailed Description
Oscillator
The MAX2750/MAX2751/MAX2752 VCOs are imple-
mented as an LC oscillator topology, integrating all of
the tank components on-chip. This fully monolithic
approach provides an extremely easy-to-use VCO,
equivalent to a VCO module. The frequency is con-
trolled by a voltage applied to the TUNE pin, which is
internally connected to the varactor. The VCO core
uses a differential topology to provide a stable frequen-
cy versus supply voltage and improve the immunity to
load variations. In addition, there is a buffer amplifier
following the oscillator core to provide added isolation
from load variations and to boost the output power.
Output Buffer
The oscillator signal from the core drives an output
buffer amplifier. The amplifier is internally matched to
50
including an on-chip DC blocking capacitor. No
external DC blocking capacitor is required, eliminating
the need for any external components. The output
amplifier has its own V
CC
and GND pins to minimize
load-pulling effects. The amplifier boosts the oscillator
signal to a level suitable for driving most RF mixers.
Applications Information
Tune Input
The tuning input is typically connected to the output of
the PLL loop filter. The loop filter provides an appropri-
ately low-impedance source. The input may incorporate
an extra RC filter stage to reduce high-frequency noise
and spurious signals. Any excess noise on the tuning
input is directly translated into FM noise, which can
degrade the phase-noise performance of the oscillator.
Therefore, it is important to minimize the noise intro-
duced on the tuning input. A simple RC filter with low
corner frequency is needed during testing in order to
filter the noise present on the voltage source driving the
tuning line.
Layout Issues
Always use controlled impedance lines (microstrip,
coplanar waveguide, etc.) for high-frequency signals.
Always place decoupling capacitors as close to the
V
CC
pins as possible; for long V
CC
lines, it may be nec-
essary to add additional decoupling capacitors located
further from the device. Always provide a low-induc-
tance path to ground, and keep GND vias as close to
the device as possible. Thermal reliefs on GND pads
are not recommended.
OSCILLATOR
CORE
BIAS
TUNE
LOOP FILTER
BYP
0.1
μ
F
SHDN
GND
OUT
V
CC1
V
CC
V
CC2
GND
SHDN
220pF
220pF
MAX2750
MAX2751
MAX2752
OUT TO MIXER/
SYNTHESIZER
FROM
SYNTHESIZER
Figure 1. Typical Application Circuit
相关PDF资料 |
PDF描述 |
|---|---|
| MAX2751EUA | 2.4GHz Monolithic Voltage-Controlled Oscillators |
| MAX2750 | 2.4GHz Monolithic Voltage-Controlled Oscillators |
| MAX2750-MAX2752 | POT 50K OHM 6MM CARBON SIDE ADJ |
| MAX2750EUA | CAP 8200PF 25V 10% X7R SMD-0402 TR-7 PLATED-NI/SN |
| MAX2752EUA | 2.4GHz Monolithic Voltage-Controlled Oscillators |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2752EUA | 功能描述:VCO振荡器 2.4-2.5GHz Mono V-Controlled 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 |
| MAX2752EUA+ | 功能描述:VCO振荡器 2.4-2.5GHz Mono V-Controlled 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 |
| MAX2752EUA+T | 功能描述:VCO振荡器 2.4-2.5GHz Mono V-Controlled 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 |
| MAX2752EUA-T | 功能描述:VCO振荡器 2.4-2.5GHz Mono V-Controlled 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 |
| MAX2752EVKIT | 功能描述:时钟和定时器开发工具 MAX2750-52 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 |
发布紧急采购，3分钟左右您将得到回复。