MAX2055EUP+TD【PDF 11/13 页】IC ADC DRVR/AMP VAR GAIN 20TSSOP

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Sheet目录471

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Digitally Controlled, Variable-Gain, Differential

ADC Driver/Amplifier

V CC

1 V

GND 20

RF_IN

2 RF_IN

ATTN OUT 19

GND

4 B4

GND 18

I SET 17

5 B3

C C 16

CONTROL

INPUTS

6 B2

7 B1

ATTENUATION

LOGIC

CONTROL

AMP IN 15

L E 14

V CC

C12

C11

8 B0

9 V CC

10 RF_OUT-

MAX2055

C BP 13

I BIAS

RF_OUT+

V CC

C10

RF_OUT

Figure 2. Low-Cost Application Circuit

feedback topology. This amplifier is optimized for a fre-

quency range of operation from 30MHz to 300MHz with

a high-output third-order intercept point (OIP3). The

bias current is chosen to optimize the IP3 of the amplifi-

er. When R1 is 1.13k Ω (909 Ω if using the circuit of

Figure 2), the current consumption is 240mA while

exhibiting a 40dBm typical output IP3 at 70MHz. The

common-mode inductor, L2, provides a high common-

mode rejection with excellent amplitude and phase bal-

ance at the output. L2 must handle the supply current

and have DC resistance less than 0.2 Ω .

Choke Inductor

The single-ended amplifier input and differential output

ports require external choke inductors. At the input,

connect a 330nH bias inductor from AMP IN (pin 15) to

I BIAS (pin 12). Connect 680nH choke inductors from

RF_OUT+ (pin 11) and RF_OUT- (pin 10) to V CC . These

connections provide bias current to the amplifier.

Layout Considerations

A properly designed PC board is an essential part of

any RF/microwave circuit. Keep RF signal lines as short

as possible to reduce losses, radiation, and induc-

tance. For best performance, route the ground-pin

traces directly to the exposed pad underneath the

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MAX2055EUP-D 功能描述:射频放大器 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

MAX2055EUP-T 制造商:Maxim Integrated Products 功能描述:DIGITALLY CONTROLLED, VARIABLE-GAIN, DIFFEREN - Tape and Reel

MAX2055EUP-TD 功能描述:射频放大器 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

MAX2055EVKIT 功能描述:射频放大器 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

MAX2056 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation Kit

MAX2056_1 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation Kit

MAX2056ETX 功能描述:射频放大器 0.8GHz - 1GHz Variable-Gain Amp 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

MAX2056ETX+ 功能描述:射频放大器 0.8GHz - 1GHz Variable-Gain Amp 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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