CMOS device combines two switches for cell phones

Norwood, MA — 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 cell phones.

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 4.2 V and 5.5 V, this device offers low on-resistance of typically 2.5 ohms, with a maximum of 3.35 ohms at 85°C.; an on-resistance R(ON) match between 0.02 and 0.1 ohms; and R(ON) flatness of 0.65 to 0.95 ohms, making the part an attractive solution for applications that require low distortion through the switch. The routing switch provides 3 dB of bandwidth at 150 MHz.

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

The ADG787 comes in a tiny 3 4 bump, 1.50 mm 2.00 mm WLCSP package; a tiny 10-lead LFCSP package; and a 10-lead MSOP. These packages make the ADG787 the suitable for space-constrained applications. 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.

See related block diagram

The ADG787 switches cost 92 cents per unit in 1,000-piece quantities. Click here for a data sheet.

Analog Devices Inc., + 1 800 262 5643,

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