MAX4855 0.75Ω, Dual SPDT Audio Switch with Integrated Comparators is a audio switch product launched by Maxim Integrated. It has a low on-resistance of 0.75Ω and supports 1.8V power supply. It is suitable for applications such as speaker switching, audio signal routing, etc.
The MAX4855 is a dual, single‑pole/double‑throw (SPDT) audio switch that operates from a single +2 V to +5.5 V supply and features rail‑to‑rail signal handling. It includes two internal comparators for headphone detection or mute/send key functions and is offered in a space‑saving 3 mm × 3 mm 16‑pin thin QFN package.
The document provides absolute maximum ratings, electrical characteristics, typical operating curves, pin descriptions, and application notes such as digital control input behavior, analog signal level handling, and power‑supply sequencing. Test circuits, timing diagrams, and package drawings are also included.
| Supply Voltage Range | 2 V – 5.5 V |
|---|
The device operates from 2 V to 5.5 V supply voltage.
The MAX4855 integrates two internal comparators.
At a 5 V supply, the low threshold is 0.8 V and the high threshold is 1.8 V.