TIDA-00659: how can we obtain the desirable results and test this amplifier using the reference design TIDA-00626 as input.

Hi Pratik,

You currently have two E2E posts open. Please confine all of your questions to one and close the other so we do not duplicate effort.

What is the signal frequency you are trying to achieve? 8GHz will generate eddy currents in even very thin traces. I recommend reading the users guides of both of these TI Designs thoroughly; they will instruct you step by step how to set up each circuit board. Please follow these guidelines and set up a test. If you have issues with the setup as described in the user's guide, then reply with more specific questions for assistance.

Best regards,

Sean

Hi Pratik,

Yes you should be able to interface the TIDA-00626 and TIDA-00659 hardware. The TIDA-00626 output is by default an 50-Ohm terminated single ended connection. The TIDA-00659 input will also need to be terminated to 50 ohms to maintain an impedance match. You can reference table 2 in the TIDA-00659 user's guide that lists the resistor values needed for a 50 ohm input match at different gains. The only other think you will need to consider is the input common mode range of the TIDA-00659 board. You should be okay using split supplies centered around ground, but you will need to take care to make sure that your signal does not exceed the input limits of the first amplifier.

A spectrum analyzer will allow you to see the frequency content of the signal, but the VNA will be challenging to use because there is not a normal 2-port system. I would suggest a high speed oscilloscope as the other piece of equipment that would allow you to analyze the signal easily.

Regards,