The MAX4908/MAX4909/MAX4930/MAX4932 are dual 3:1 clickless audio multiplexers with negative-signal handling capability. These analog multiplexers have a low on-resistance, low supply current, and operate from a single supply voltage. They can pass signals as low as VCC - 5.5V without distortion.
The MAX4908/MAX4909/MAX4930/MAX4932 family are dual 3:1 clickless audio multiplexers that support negative‑signal handling, allowing signals as low as VCC‑5.5 V to pass without distortion. They offer low on‑resistance, low supply current, high PSRR, and built‑in shunt resistors to suppress click‑and‑pop sounds, with break‑before‑make switching for clean audio switching.
The document provides absolute maximum ratings, detailed electrical and dynamic characteristics, pin‑out tables, functional diagrams, test circuits, and application notes. It also lists package options, ordering information, and revision history for designers integrating these parts into cell phones, PDAs, notebooks, and other portable devices.
| Supply Voltage | 1.8 V to 5.5 V |
|---|---|
| Typical On‑Resistance | 0.38 Ω (typ) |
| Leakage Current | 50 nA (typ) |
| Channel‑to‑Channel Matching | 0.12 (max) |
| On‑Resistance Flatness | 0.35 Ω (max) |
| Crosstalk (20 kHz) | -70 dB (typ) |
| Off‑Isolation (20 kHz) | -80 dB (typ) |
| Total Harmonic Distortion | 0.02 % (typ) |
The devices operate from a single supply of 1.8 V to 5.5 V.
The typical on‑resistance is about 0.38 Ω.