The FSA2457 is a bi-directional, low-power, dual double-pole double-throw
(4PDT) analog switch targeted at dual 1-bit SIM/SD/MMC card and/or GPS signal
multiplexing. It is optimized for switching the WLAN-SIM data and control
signals at 52Mbps
The FSA2457 is compatible with the requirements of 1-bit SIM/SD/MMC cards and
is ideal for interfacing to GPS baseband processors. The FSA2457 features a low
on capacitance (CON) of 12pF to ensure high-speed data transfer.
The FSA2457 contains special circuitry that minimizes current consumption
even when the control voltage applied to the SEL pin is lower than the supply
voltage (VCC). This feature is especially valuable in ultra-portable
applications, such as cell phones; allowing direct interface with the
general-purpose I/Os of the baseband processor. Other applications include
switching and connector sharing in portable cell phones, PDAs, digital cameras,
printers, and portable GPS systems
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