iFixit Tears Down iPad, Reveals A4 Chip

iFixit picked up an iPad when the multimedia tablet when on sale on Saturday and promptly stripped it down to its bare components. What they found inside included Apple’s A4 processor, two batteries, and room for the 3G wireless data board that will be included in models set to release at the end of April.

The breakdown revealed the A4 package-on-package design that includes the processor chip along with the tablet’s RAM. It also showed that Apple chose to use touch circuitry that’s more like what appeared in the original iPhone, which was most likely a choice based on cost since more expensive and smaller chips weren’t necessary.

iFixit’s iPad Tear Down

“A4 is packaged just like the iPhone processors, microprocessor in one package and two memory modules in the other package,” iFixit’s Kyle Wiens said. “They’re all sandwiched together in a very nice and thin PoP.”

The iPad’s battery is actually made up of two batteries running in parallel offering 24.8 Watt-hours. The capacity the iPad’s battery setup offers clocks in at over 5 times of what the iPhone battery provides, and the iPad uses about 2.5 Watts on average — substantially less than a compact fluorescent light.

The internal frame includes a space that’s just the right size for a camera, but instead it holds the tablet’s ambient light sensor. The body, like the unibody MacBook Pro, is milled from a single aluminum block, offering better strength and rigidity. The single piece construction, however, does add to the iPad’s weight. The iPad’s glass added a little to the overall weight, too, than’s to its size and 1.18mm thickness.

The complete collection of disassembly photos are available at the iFixit Web site.