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CMOS device combines two SPDT switches for cellphone apps

Posted: 03 Jan 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Analog Devices? adi? CMOS? single-pole? double-throw switch?

Analog Devices Inc.'s ADG787 is a low voltage, CMOS device that contains two independently selectable, single-pole, double-throw (SPDT) switches for portable electronic devices such as cellphones.

The ADG787 is designed as a general analog/digital switch and can also be used for routing USB 1.1 signals. Operating on an input voltage between 4.2V and 5.5V, this device offers low on-resistance of typically 2.5 ohms, with a maximum of 3.35 ohms at 85C; an on-resistance match between 0.02 ohm and 0.1 ohm; and on-resistance flatness of 0.65 ohm to 0.95 ohm, making the device suitable for applications that require low distortion through the switch. The routing switch provides 3dB of bandwidth at 150MHz.

The new ADG787 operates on a single power supply between 1.8V and 5.5V. Analog inputs can range from -0.3V to 0.3V, while allowable digital inputs vary from 0.3V to 6V, or 10mA, whichever occurs first. The ADG787 consumes <1?W.

The ADG787 is available in a 1.50-by-2mm WLCSP package, a 10-lead LFCSP package and a 10-lead MSOP package. Each switch conducts equally well in both directions when on and has an input signal range that extends to the supplies. The ADG787 exhibits break-before-make switching action.

The ADG787 switches cost 92 cents per unit in 1,000-piece quantities.

EeProductCenter




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