Apple is ramping up chip orders as it prepares to launch new iPad and iPhone models, according to reports.

Digitimes cites sources at Apple's supply chain that claim that Apple placed almost double the amount of chip orders in the third quarter than it did in the previous quarter.

The sources expect that chip orders will increase from the 20 million units placed during the second quarter to 40 million units in the third quarter, with those chips then making their way in to new iOS devices. Apple is rumoured to be planning to launch an 'iPhone 5S,' a cheaper 'iPhone Lite,' the fifth-generation iPad and possibly a new iPad mini too.

The surge in chip orders is said to follow a slow period for Apple, during which the company reduced part orders between the fourth quarter of 2012 and the second quarter of 2013, the sources said.

The second half of 2013 could see overall Apple chip shipments increase significantly, with 70 per cent of the total chip shipments for iOS devices this year expected to take place during that period.

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