Fairchild claims first camera isolation switch for portables

San Jose, Calif. — Fairchild Semiconductor claims the industry’s first image module switch that isolates parasitic components to maintain signal integrity. Aimed at 3G designers of smartphones, netbooks, set-top boxes and notebooks, the FSA1211 12-port, single-pole, single-throw (SPST) analog switch isolates the high-speed bus from parasitic components in dual-camera applications.

Smartphones feature dual cameras and as these cameras move to higher and higher resolutions, parasitic components play a critical role in deteriorating signals and generating unwanted EMI, says Fairchild.

With a bandwidth in excess of 720 MHz and high electrostatic discharge (ESD) (5.5 kV), the FSA1211 offers an optimal way to isolate capacitance and maintain signal integrity for high-speed data paths. In addition, when isolating the unused parallel interface, the FSA1211 reduces the radiated EMI of the path, improving RF desense. The traditional parallel solution can deteriorate the signal due to the unwanted “stub,” resulting in image degradation of the camera module, says Fairchild.

Another approach is to use three analog switches, says Fairchild but it complicates design and adds to the overall bill of material (BOM) costs.

Pricing: $0.80 each in quantities of 1,000.
Availability: Samples and delivery are available now.
Additional information: Click here for a datasheet and here for more information about Fairchild’s switch portfolio.