** European tech firms incl chipmakers drop, with analysts noting negative read-across from updates by Belgium's Melexis

and US's Qorvo and AMD

** Pan-European STOXX tech index falls 1.7%, leading sectoral losses on the wider STOXX 600 index, which is down 0.86%

** Besi falls 3.2%, most among Amsterdam blue chips , while Soitec slides 3.7%, among worst performers on France's SBF120

** Chipmakers Infineon and STMicro fall around 3%, while Swiss sensor maker ams OSRAM and German chip materials supplier Siltronic down 3.6% and 2.3%, respectively

** Melexis , which mainly serves auto customers, expects lower Q4 sales as carmakers temporarily cut inventories

** Qorvo forecasts below-expectations Q3 sales due to stiff competition and consumer shift towards entry-tier smartphones

** AMD's revenue forecast did not failed to satisfy investors looking for a bigger windfall from the AI boom

** "AMD failed to impress. This should weigh on chip names especially with some AI fantasy," a local trader says

** "Besi is typically 30%-40% smartphone-related rev, so (Qorvo's update signals) ongoing delays to the recovery of the mainstream assembly market," Sara Russo from Bernstein says

** Adds peer ASMPT holds a similar outlook to Besi

** Trion Reid from Berenberg also points out Besi and Soitec's exposure to cars, though lower than Melexis

(Reporting by Dagmarah Mackos and Ozan Ergenay, writing by Piotr Lipinski)

((piotr.lipinski@tr.com))