Ultra−Low Resistance Dual SPDT Analog Switch The NLAS5223B is an advanced CMOS analog switch fabricated in Sub−micron silicon gate CMOS technology. The device is a dual Independent Single Pole Double Throw (SPDT) switch featuring Single Supply Operation from 1.65−4.5 V Full 0−VCC Signal Handling Capability Low Standby Current, 50 nA Low Distortion Cell Phone Audio Block Speaker and Earphone Switching Ring−Tone Chip / Amplifier Switching Modems