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Muxes, switches target precision instrumentation apps

Posted: 20 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:multiplexers? switch? analog mux?

Vishay muxes, switches

Vishay Intertechnology Inc. has launched eight new high-frequency, low-charge-injection analog multiplexers and switches for precision instrumentation applications.

The four new analog muxes and four new analog switches combine an ultra-low charge injection from 0.5pC to 1.0pC, low switch capacitance of 2pF and 3pF, leakage currents from 0.25nA to 5nA, and typical on-resistance from 66? to 72?.

The specifications make the devices suitable for high-frequency analog switching, high-speed multiplexing, audio and video routing, filtering, gain and frequency selection, level shifting and calibration. End products will include precision instrumentation, industrial controls, medical instrumentation, telecom and datacom equipment, automated test equipment and high-speed communications systems.

The new mux offering includes the 4-channel DG604, the dual 4-channel DG4052A, the 8-channel DG4051A, and the triple 2-channel DG4053A. The new analog switches are the quad SPST DG611A, DG612A, and DG613A that offer improved charge injection, on-resistance, and standby current compared to the industry-standard DG611, while eliminating the need for a VL pin. The new DG636 can be used as a dual SPDT analog switch or dual 2:1 multiplexer.

All of the devices are designed to operate from a 2.7V to 12V single supply, or from 2.5V to 5.0V dual supplies. They are fully specified at 3V, 5V, and 5V. All control logic inputs have guaranteed 2V logic high limits when operating from 5V or 5V supplies, and are low-voltage logic compatible when operating from a 3V supply.

The multiplexers and switches conduct equally well in both directions and offer rail-to-rail analog signal handling. They feature an extended operating temperature from -40C to +125C, and are available in a variety of packages, including the 14- and 16-lead TSSOP, 16-pin narrow SOIC. They are also claimed to be the first devices of their kind to be offered in the Pb-free 1.8mm x 2.6mm miniQFN package.

Samples and production quantities of the new analog switches and multiplexers are available with lead times of six to eight weeks for larger orders.

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