KCC's Quizzes AQQ305 about a mutual exponentiation equation
1. Quote of the month: "A train station is where a train stops. A bus station is where a bus stops. I have a work station on my desk, so..." - unknown
2. Quiz AQQ305 about finding a mutual exponential equation
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September Monthly Blog Quiz! Read the blog, take the quiz, and you could win a gift card
Quiz: How Well Do You Know Adaptive Power Switching?
Is your I/O module overheating? The AD74416H's Adaptive Power Switching (APS) can cut heat dissipation by up to 40% — but how well do you really understand how it works?
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AD9684
Recommended for New Designs
The AD9684 is a dual, 14-bit, 500 MSPS ADC. The device has an on-chip buffer and a sample-and-hold circuit designed for low power, small size, and ease...
Datasheet
AD9684 on Analog.com
Hello,
Looking at figure 39 on page 22 of the AD9684 datasheet (attached below) shows a suggested matching circuit to transform a single ended input to a differential input. I am trying to understand the design of each section and what each section does or what its purpose is. Would someone have a better idea that might be able to break it down for me?
I believe the first transformer is a common mode choke that converts single ended to differential. I am not at all sure what the purpose of the second transformer is or how some of the components after that were chosen. All I know is that we are trying to achieve a certain input impedance.
Hi jrodh
Thanks for your interest in AD9684.

The 0.1uF capacitors are for the AC-coupling.
Please see below related article for the double BALUN configuration considerations: