This switch family can handle negative signals with a single positive power supply, thereby reducing external component count and improving audio signal quality.
The MAX4902/MAX4904/MAX4905 feature integrated shunt switches to ground. This feature reduces audio popping and clicking sounds by depleting the capacitive charge, which commonly builds up on the unconnected port of the switch, to ground.
In addition, an extremely low 0.6Ω on-resistance, a low 0.25Ω on-resistance flatness, and a low 0.04% total harmonic distortion, yield excellent audio signal quality.
An integrated comparator (MAX4905) gives the user mute and headphone-detection functionality, normally implemented with external components.
The MAX4901-MAX4905 are available in the extended temperature range (-40°C to +85°C) and in both a tiny 9-bump UCSP (1.5mm x 1.5mm) and an 8-pin TDFN package (3mm x 3mm).
The previously released MAX4762-MAX4765 family of analogue switches offers the same performance as the MAX4901-MAX4905 in a small UCSP package, but in a dual SPDT switch configuration.