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Single pole/triple throw analogue switch

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FAIRCHILD Semiconductor, represented by Arrow Electronics , has announced the industry’s only single pole/triple throw (SP3T) CMOS analogue switch.

The new FSA3357 device provides significant benefits for designers of handheld devices, mobile phones, MP3 players, PDAs, notebooks and other portable electronics devices.

Replacing two (in series) single pole/double throw (SPDT) components with a single 3:1 mux FSA3357 device lowers part count by 50 per cent, provides superior utilisation of PCB real estate, preserves signal integrity and reduces equivalent component pick-and-place operations by half.

Available in US8 packaging, the FSA3357 SP3T analogue switch provides smaller size and better performance than the dual 2:1 mux devices required for equivalent functionality.

The high-performance FSA3357 SP3T analogue switch features an RDS(on) of only 6Ω resulting in minimal signal attenuation. The device's 0.01% total harmonic distortion (THD), coupled with its -60dB crosstalk characteristic, ensures signal integrity.

Its wide bandwidth (250MHz) and rail-to-rail signal handling guarantee extremely fast, clip-free transfer of analogue and digital signals.

A wide VCC range of 1.65V to 5.5V makes the FSA3357 device ideal for battery applications. The FSA3357 SP3T device is the latest addition to Fairchild's analogue switch family featuring ultra-small package devices in SC70, SOT23, leadless MicroPak and US8 form factors.

The FSA3357 adds to Fairchild's portfolio of products targeted at portable applications.

These products include audio amplifiers, LEDs for backlighting, supervisory products such as temperature sensors and reset generator circuits, dc/dc conversion products such as dc/dc converters, LDOs and MOSFETs, and TinyLogic.

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