Analog Switches Primed For Portables

With direct li-ion battery operation, typical on-resistance values down to 0.25Ω, and current-handling capabilities up to 300 mA for load switching, the DGxxxx family of low-voltage analog switches takes aim at a wide range of portable products. The seven devices in the family provide bi-directional signal flow and rail-to-rail signal swing. The DG2799 DPDT switch guarantees 1.6V logic at a 4.3V and features an on-resistance of 0.25Ω at 2.7V and switching times of 57 ns (t_ON) and 45 ns (t_OFF). The DG2714, a break-before-make SPDT monolithic CMOS analog switch, operates with supply voltages from 1.6V to 3.6V and specifies switching times of 51 ns (t_ON) and 33 ns (t_OFF). Typical on-resistance is 0.85Ω. With the same operating voltage range, the DG2715 and DG2716 are bi-directional SPST devices, switching at speeds of 29 ns (t_ON) and 26 ns (t_OFF) with typical on-resistance values of 0.4Ω at 2.7V and 1.5Ω at 1.8V with a flatness of 0.2Ω. The DG2741, DG2742, and DG2743 single-supply, dual SPST devices exhibit on-resistance values down to 0.4Ω at 2.7V, switching speeds of 30 ns (t_ON) and 28 ns (t_OFF), and the ability to handle signals over the entire analog voltage range. Available in a variety of packages and depending on the device, prices range from $0.49 to $0.97 each/1,000. VISHAY INTERTECHNOLOGY INC., Malvern, PA. (619) 336-0860.