ADC Driver in a 32-WQFN — what the package and type tell you
The Texas Instruments LMH6517SQE/NOPB is a 2-circuit variable-gain amplifier (VGA) purpose-built as an ADC driver, a class of part that conditions analog signals before they hit the converter input. The 32-WQFN (5x5) exposed-pad package is the footprint you need to land on the board — the pad underneath is the primary thermal path, so the PCB layout should include a via array to a copper plane. Rated for mobile communications applications, this part is specified for signal chains where gain adjustability and wide bandwidth are needed ahead of the ADC.
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Surface-mount assembly and tape-and-reel handling
The 32-WFQFN exposed-pad package is moisture-sensitive — typical MSL 3, meaning the floor life after opening the sealed bag is 168 hours at <30°C/60% RH. If that window is exceeded, a bake at 125°C for 48 hours is required before reflow to prevent package cracking.