原理图如下所示，电路板只焊接了ADL5542部分和电源部分。焊接完成测试时发现输入输出有莫名其妙的振荡信号。
ADL5542输入端测试的信号如下图：（C6左侧）
ADL5542输出端测试信号如下图：（C7右侧）
ADL5542连接的其它IC均已经断开，整个电路板只焊接了ADL5542部分和电源部分，麻烦帮忙分析一下，什么情况会导致这样的振荡出现呢？
PS：焊接了10多片，都是这种现象，芯片也重新购买过，应该可以排除这部分的问题
I have designed a ADL5542 (Power Amplifier) PCB as per the specifications in the datasheet. I want to test the performance and ensure that the PCB works fine before I link them up with other PCBs. So, can someone guide me as to what tests/equipment I…
I want to design a PCB which uses AD8318 and ADL5542. Unfortunately, I am unable to find the Eagle libraries for these ICs. Does anyone have these libraries?
Thanks.
Unfortunately, there isn't a drop in replacement for the ADL5602 that would be functional upto 6GHz. The ADL5542 is a comparable gain block that has a max operational frequency of 6GHz, but the device is packaged in a 8-lead LFCSP.
Hi Rich,
1. The modulus is related to the channel spacing or frequency steps. Gory details on how to calculate are in the ADF4153 etc. fractional N data sheets.
So as you step through channels you step through N, N+1, N+2 etc divided by the modulus…
The part is a Panasonic, mulitlayer ceramic capacitor. Part number: ECJ-2VF1C105Z. It is an SMD device. Given the frequency range of operation of the ADL5542, all components are SMD devices. Any quality multilayer cermaic capacitor maybe used. It doesn…
Dear Allan,
I would recommend the ADF4360-0 as the base oscillator. It is very simple to use, but check if its phase noise meets your requirements.
It is possible the turn off and on the output signal by switching the PLL to power-down mode, but it…
最新ADI官方中文技术资料更新 (2014年4月) by adiadmin
中文数据手册
AD8418：双向、零漂移、电流检测放大器
ADA4861-3：高速、低成本、三通道运算放大器
ADIS16137：±1000°/秒精密角速度传感器
ADL5542：50 MHz至6 GHz RF/IF增益模块
ADM8323/ADM8324：内置窗式看门狗和手动复位的监控电路，采用5引脚SOT-23封装
ADSP-CM402F/CM403F/CM407F/CM408F：搭载ARM Cortex…
ADSP-CM402F/CM403F/CM407F/CM408F：搭载ARM Cortex-M4的混合信号控制处理器
ADXL278：双轴、高g iMEMS加速度计