收藏本站
MAX2691
L2 Band GPS Low-Noise Amplifier
Bump Configuration
TOP VIEW
+
V CC
A1
A2
RFOUT (SHDN)
MAX2691
RFIN
B1
B2
GND
WLP
Bump Description
BUMP
A1
A2
B1
B2
NAME
V CC
RFOUT
( SHDN )
RFIN
GND
FUNCTION
Supply Voltage. Bypass to ground with a 10pF capacitor as close as possible to the IC.
RF Output/ SHDN Input. RFOUT is internally matched to 50 I and pulled up to V CC through a 1M I
resistor. SHDN is shared with the RFOUT bump. The device is in active mode by default once V CC
is applied. RFOUT( SHDN ) can be pulled to a DC low through a 25k I resistor to shut down the IC.
RF Input. Requires a DC-blocking capacitor and external matching components.
Ground. Connect to the PCB ground plane.
Detailed Description
The MAX2691 LNA is designed for GPS L2 applications.
The device features a power-shutdown control mode
to eliminate the need for an external supply switch.
The device achieves high gain, low noise figure, and
excellent linearity.
Input and Output Matching
The MAX2691 requires an off-chip input match. Only an
inductor in series with a DC-blocking capacitor is needed
to form the input matching circuit. The Typical Application
Circuit shows the recommended input-matching network.
These values are optimized for the best simultane-
ous gain, noise figure, and return loss performance.
Reducing the input coupling capacitor results in a lower
IIP3. The device integrates an on-chip output matching
to 50 I at the output, eliminating the need for external
matching components. Table 1 lists typical device S
parameters and K f values. Typical noise parameters are
shown in Table 2 .
Shutdown
The MAX2691 includes an optional shutdown feature to
turn off the entire chip. The device is placed in active
mode by default once V CC is applied, due to the on-chip
pullup resistor to V CC at the RFOUT bump (shared with
the SHDN input). To shut down the part, apply a logic-low
to the RFOUT bump through an external resistor with an
adequate value, e.g., 25k I , in order not to load the RF
output signal during active operation.
Applications Information
A properly designed PCB is essential to any RF micro-
wave circuit. Use controlled-impedance lines on all
high-frequency inputs and outputs. Bypass V CC with
decoupling capacitors located close to the device. For
long V CC lines, it may be necessary to add decoupling
capacitors. Locate these additional capacitors further
away from the device package. Proper grounding of
the GND pin is essential. If the PCB uses a topside RF
ground, connect it directly to the GND pin. For a board
where the ground is not on the component layer, connect
the GND pin to the board with multiple vias close to the
package.
Refer to www.maxim-ic.com for the MAX2691 EV kit
schematic, Gerber data, PADS layout file, and BOM
information.
????????????????????????????????????????????????????????????????? Maxim Integrated Products 5
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MAX2693LEVKIT# EVAL KIT
MAX2694EVKIT# EVAL KIT MAX2694
MAX2695EVKIT# EVAL KIT MAX2695
MAX2741EVKIT EVAL KIT MAX2741
MAX2742ECM+D IC GPS RF FRONT END 48TQFP
MAX2745ECM+D IC GPS RF FRONT END 48TQFP
MAX2750AUA+ IC VCO MONO 2.4GHZ 8-MSOP
MAX2752EVKIT EVAL KIT
相关代理商/技术参数
MAX2691EWS+ 制造商:Maxim Integrated Products 功能描述:LOW NOISE FIGURE GPS L2 BAND LNAS IN AN ULTRA SMALL WLP PACK - Rail/Tube
MAX2691EWS+T 功能描述:射频放大器 GPS/GNSS Low-Noise Amplifier 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
MAX2691EWS+T10 功能描述:射频放大器 GPS/GNSS Low-Noise Amplifier 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
MAX2691LEWS+T 功能描述:射频放大器 GPS/GNSS Low-Noise Amplifier 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
MAX2691LEWS+T10 功能描述:射频放大器 GPS/GNSS Low-Noise Amplifier 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
MAX2692EVKIT# 功能描述:射频开发工具 MAX2692 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MAX2692EWS+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX2692EWS+T 功能描述:射频放大器 WLAN/WiMAX Low-Noise 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