Low-ohmic analog switches support audio and signal processing applications

South Portland, Maine — Fairchild Semiconductor, a supplier of analog switch solutions, announces three new low-ohmic analog switch products — the FSA4157 Single Pole/Double Throw (SPDT), FSA1156 Normally Open Single Pole/Single Throw (SPST NO) and the FSA1157 Normally Closed Single Pole/Single Throw (SPST NC) switches. The devices' low ON resistance (RON ) preserves signal integrity and lowers the drive necessary to support audio and signal processing applications. Available in chip-scale MicroPak packaging, all products offer greater than 65% space savings over traditional SC70 and SOT-23 packages, as well as:

RON — maximum of 1.0 to 1.35 ohms
Operating voltage range –1.65 to 5.5V
THD — 0.002% typical
RON flatness — 0.2 ohm typical

By design, Fairchild's analog switches incorporate features that are important to a wide range of customers and applications. These universal switches make selection simpler, reduce qualification and inventory costs, and provide superior performance for easy re-use in system upgrades.

The 1.65 to 5.5V operating range of these devices provides the added benefit of protecting cell phone batteries from damage caused by overcharges. The operating voltage of the switches enables them to accommodate overcharges of up to 4.6V, which typical 3.3V-rated analog switches cannot do. The +350MHz bandwidth of the devices supports high-speed analog and digital signal routing in low-voltage applications, while providing ESD protection of better than 7500V (Human Body Model).

The low-ohmic analog switches add to Fairchild's portfolio of products targeting portable applications. These products include audio amplifiers, LED drivers and LEDs for backlighting, supervisory products such as temperature sensors and reset generator circuits, and DC/DC conversion products such as DC/DC converters, LDOs and MOSFETs.

These lead-free products meet or exceed the requirements of the joint IPC/JEDEC standard J-STD-020B and are compliant with the European Union requirements, which will take effect in 2005.

FSA4157 — $0.45 each (1000 pcs) in 6-lead SC70 or Chip-scale MicroPak
FSA1156 — $0.38 each (1000 pcs) in 6-lead SC70 or Chip-scale MicroPak
FSA1157 – $0.38 each (1000 pcs) in 6-lead SC70 or Chip-scale MicroPak

It's available now with delivery in 4 weeks ARO.


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