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| 型号： | MAX3524EUB+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/7页 |
| 文件大小： | 0K |
| 描述： | IC AMP LNA BROADBAND 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | * |
| 频率： | 44MHz ~ 880MHz |
| 增益： | 9.8dB |
| 噪音数据： | 4.2dB |
| RF 型： | CATV |
| 电源电压： | 4.75 V ~ 5.25 V |
| 电流 - 电源： | 85mA |
| 测试频率： | 44MHz |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
Low-Noise, High-Linearity
Broadband Amplifier
Detailed Description
The MAX3524 is a broadband amplifier with a single-
ended input and differential outputs, including an oper-
ational amplifier that can be used to control an external
attenuator circuit. Figure 1 is the MAX3524 EV kit
schematic.
Low-Noise Amplifier
The low-noise amplifier operates from 44MHz to
880MHz and is designed specifically for cable TV and
cable modem applications. The LNA provides 15dB of
insertion voltage gain (see Figure 2) when driving a
V CC
C1
47pF
3k ? load. At 300MHz, the noise figure is 4.2dB, IIP2
and IIP3 are 42dBm and 14dBm, respectively.
Operational Amplifier
The operational amplifier is suitable for interfacing to a
PIN attenuator circuit which is typically employed at the
input of the LNA. The common-mode input range is
0.5V to 3V and the output voltage swing is 0.5V to V CC -
0.5V while sinking or sourcing 20mA. Input bias current
and input offset voltage are 1μA and 1mV, respectively.
The open-loop voltage gain is greater than 10,000. The
gain bandwidth product is greater than 1MHz for a
closed-loop voltage gain of one.
C15
0.1 μ F
C10
RF INPUT 0.1 μ F
C11
0.1 μ F
TO
ATTENUATOR
R2
R1
13.3 ?
C12
0.1 μ F
V CC
R4
50k ?
V CC
RFIN
RFGND
RF OUT-
VCC2
RF OUT+
V CC
C14
47pF
C15
0.1 μ F
C2
2pF
RF OUTPUT
R3
R9
100 ?
50k ?
OP OUT
OPIN+
0.1 μ F
R10
3k ?
BIAS
D1
R8
3k ? R7
10k ?
V CC
OP IN
L BIAS
R BIAS
5.81 ?
D2
D1, D2 SMALL-SIGNAL SCHOTTKY DIODES, TYPICALLY CMDSH-3
Figure 1. MAX3524 EV Kit Schematic
V CC (PIN9)
A V = (V RFOUT + ) - (V RFOUT -) = 5.7
V IN
75 ?
RFIN
V1
A V (dB) = 20log 10 A V = 15dB
Z S
2V IN
330 ?
1.8pF
30 ?
30 ?
RFOUT+
Figure 2. LNA Equivalent Circuit and Open-Circuit Voltage Gain Calculation
0.06V1
RFOUT-
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3524EVKIT | 功能描述:放大器 IC 开发工具 MAX3524 Eval Kit RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MAX352C/D | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX352CPE | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX352CPE+ | 功能描述:模拟开关 IC Precision Quad SPST RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX352CSE | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
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