Analog Multiplexers and Switches Feature 1pC Charge Injection, 3pF Switching Capacitance

(Product News, 13 May 2008)

Vishay Intertechnology Inc. has released eight high-frequency, low-charge-injection analog multiplexers and switches suitable for high-frequency analog switching, high-speed multiplexing, audio and video routing, filtering, gain and frequency selection, level shifting, and calibration applications. They are also the first devices of their kind to be offered in the leadless 1.8x2.6mm miniQFN package, in addition to the standard TSSOP and SOIC packages.

The four new analog multiplexers and four new analog switches combine an ultra-low charge injection from 0.5pC to 1pC, low switch capacitance of 2pF and 3pF, leakage currents from 0.25nA to 5nA, and typical on-resistance from 66Ω to 72Ω. The new multiplexers include the four-channel DG604, the dual four-channel DG4052A, the eight-channel DG4051A, and the triple dual-channel DG4053A. The new analog switches are the quad SPST DG611A, DG612A, and DG613A, which 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 operate from a +2.7V to +12V single supply, or from ±2.5V to ±5V dual supplies. They are fully specified at +3V, +5V, and ±5V. All control logic inputs have guaranteed 2-V logic high limits when operating from +5V or ±5V supplies, and are low-voltage logic compatible when operating from a 3-V 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 -40°C to +125°C, and are available in a variety of packages, including the 14- and 16-lead TSSOP, 16-pin narrow SOIC, and the miniQFN.

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