Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability

The MAX4762–MAX4764/MAX4764A/MAX4765 dual SPDT (single-pole/double-throw) switches feature negative signal capability that allows signals below ground to pass through without distortion. These analog switches operate from a single +1.8V to +5.5V supply and have low 0.6Ω on-resistance, making them ideal for switching audio signals.

The MAX4763/MAX4765 include a comparator that can be used for headphone detection or a mute/send key function. The MAX4764/MAX4764A/MAX4765 have an internal shunt switch to automatically discharge any capacitance at the NO and NC connection points. This reduces click-and-pop sounds that occur when switching audio signals between precharged points.

These SPDT switches are available in space-saving µMAX®, TDFN, thin QFN, and UCSP™ packages and operate over the -40°C to +85°C extended temperature range.

Applications

* Cell Phones * MP3 Players * Notebook Computers * PDAs and Other Handheld Devices

* Distortion-Free Negative Signal Throughput Down to VCC - 5.5V

* Comparator for Headphone or Mute Detection (MAX4763/MAX4765)

* Internal Shunt Resistor Reduces Click/Pop (MAX4764/MAX4764A/MAX4765)

* Low On-Resistance (RON)

* 0.6Ω at +2.7V Supply

* 0.25Ω On-Resistance Flatness

* 0.05Ω On-Resistance Matching

* +1.8V to +5.5V Supply Voltage

* -70dB Crosstalk (100kHz)

* -65dB Off-Isolation (100kHz)

* 0.01% Total Harmonic Distortion

* Available in µMAX, TDFN, Thin QFN, and UCSP Packages