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High-Voltage, Single- and Dual-Supply SPDT Analog Switches with Low 3.6-Ohm On-Resistance

Mon, 01/14/2008 - 7:32am

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analog switches with low ohm on resistanceVishay Intertechnology released two high-voltage, single- and dual-supply single-pole double-throw (SPDT) analog switches. The DG469 and DG470 devices are identical, except the DG470 provides an enable pin, which puts all of the switches in a high-impedance state, maintaining a “safe state” at power up and preventing accidental signal or power shorts. The new switches are optimized for audio and video signal switching, sample and hold systems, precision data acquisition, relay replacement, and power routing in audio equipment, automatic test equipment, industrial equipment, communications systems, xDSL modems, automotive and avionic systems, and medical equipment. For instrumentation and power routing, the DG470’s enable pin disconnects both inputs and outputs, guaranteeing that signals and power are not connected until the enable pin is activated. The enable pin can also be used as a quick “disconnect” function in the event of a fault condition, and provides a “mute” function for audio switching. The DG469 and DG470 offer a low 3.6-ohm typical and 4.2-ohm maximum on-resistance with flatness of 0.4 ohms typical. Both devices are rated for 120 mA of continuous current, key for relay replacement and power routing. The devices offer a 44V maximum supply voltage rating, and 57 dB isolation at 1 MHz. The high-voltage devices are fully specified to operate with dual supplies at ±5V and ±15V or a 12V single supply, and offer an up to 15V analog signal range on the outputs and inputs. The switches operate with low power dissipation of 66 µW. They feature fast typical switching speeds of 129 ns (turn-on) and 80 ns (turn-off).

Vishay Intertechnology
(619) 336-0860, www.vishay.com

 

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