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VHF-to-Microwave, +3V,
General-Purpose Amplifiers
_______________Detailed Description
The MAX2630–MAX2633 are broadband amplifiers with
3dB bandwidth greater than 1GHz. Their small size and
internal bias circuitry make them ideal for applications
where board space is limited. The MAX2632/MAX2633
have a user-selectable bias current that allows the user
OUT
C BLOCK
OUT
V CC
C BYP
V CC
to set both gain and output power for a particular appli-
cation, and the MAX2631/MAX2633 incorporate shut-
down capability.
__________Applications Information
GND
MAX2630
IN
C BLOCK
IN
External Components
The MAX2630–MAX2633 are easy to use, as shown in the
Typical Operating Circuit and Figures 1, 2 and 3. Input
and output series capacitors may be necessary to block
DC bias voltages generated by the amplifiers from inter-
acting with adjacent circuitry. These capacitors must be
large enough to contribute negligible reactance in a 50 Ω
system at the minimum operating frequency. Use the fol-
lowing equation to calculate their minimum value:
Figure 1. MAX2630 Typical Operating Circuit
C BLOCK =
53, 000
f
( pF )
OFF
ON
SHDN
BIAS
IN
C BLOCK
IN
where f (in megahertz) is the minimum operating
frequency.
GND
The V CC pin must be RF bypassed for correct opera-
tion. To accomplish this, connect a capacitor between
the V CC pin and ground, as close to the package as is
OUT
C BLOCK
OUT
MAX2631
V CC
C BYP
V CC
practical. Use the same equation given above (for DC-
blocking capacitor values) to calculate the minimum
capacitor value. If the PC board has long V CC lines,
additional bypassing may be necessary. This can be
done farther away from the package, if needed.
Proper grounding of the GND pin is essential. If the PC
board uses a topside RF ground, connect it directly to
the GND pin. For a board where the ground plane is not
on the component side, the best technique is to con-
Figure 2. MAX2631 Typical Operating Circuit
nect the GND pin to it with a plated through-hole close
to the package.
BIAS
BIAS
IN
C BLOCK
IN
An on-chip buffer at the MAX2631/MAX2633’s SHDN
pin makes bypassing this pin unnecessary except in
very noisy applications. When RF filtering is needed,
R BIAS
GND
use a bypass capacitor similar to the one used on V CC .
Since negligible current flows into this pin, additional
RF filtering may be done with a series resistor.
OUT
C BLOCK
OUT
MAX2632
V CC
C BYP
V CC
To set the MAX2632/MAX2633 ’s supply current,
connect a resistor from the BIAS pin to ground. To
estimate the value of this resistor, refer to the graph
Supply Current vs. R BIAS in the Typical Operating
Characteristics .
Figure 3. MAX2632 Typical Operating Circuit
_______________________________________________________________________________________
7
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相关代理商/技术参数
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MAX2632EUS-T 功能描述:射频放大器 VHF-to-Microwave 3V General-Purpose RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2633EUT 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述:
MAX2633EUT+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX2633EUT+T 功能描述:射频放大器 VHF-to-Microwave 3V General-Purpose RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2633EUT-T 功能描述:射频放大器 VHF-to-Microwave 3V General-Purpose RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
MAX2633PCB 功能描述:射频放大器 MAX2633PCB Eval Kit RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel
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