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MAX4993：Low RON, Dual-SPDT/Single-DPDT Analog Switches with Slow Turn-On Time

Reduces Clicks and Pops Without Requiring Additional Components

The MAX4991–MAX4994 low on-resistance analog switches operate from a single +1.8V to +5.5V supply. The MAX4991/MAX4993 feature a slow turn-on time to reduce clicks and pops due to coupling capacitors and audio amplifiers with a DC output bias. This feature provides click-and-pop reduction without adding additional parts for existing architectures. The MAX4991/MAX4992 are dual single-pole/double-throw (SPDT) switches, while the MAX4993/MAX4994 are double-pole/double-throw (DPDT) switches. The MAX4993/MAX4994 feature an active-low enable input (active-low EN) that sets all the channels to high impedance and reduces supply current when driven high. These devices have 0.3Ω on-resistance and 0.004% THD+N to route high fidelity audio signals. The MAX4991–MAX4994 are available in space-saving 10-pin UTQFN (1.4mm x 1.8mm) package, and are specified for operation over the -40°C to +85°C extended temperature range.

Key Features Slow Turn-On for Click-and-Pop Reduction Without Additional Parts Low 0.3Ω On-Resistance Low RON Flatness (1mΩ) Low THD+N: 0.004% +1.8V to +5.5V Single-Supply Operation 1.2µA (typ) Supply Current Space-Saving Packages 10-Pin UTQFN (1.4mm x 1.8mm x 0.55mm)

MAX4991, MAX4992, MAX4993, MAX4994: Typical Application Circuit Applications/Uses Audio Signal Routing Cellular Phones Portable MP3 Players Speaker Headset Source Switching

DataSheet

Parametrics

Design kits & evaluation modules

• MAX4993EVKIT

Quality and Environmental Data

• MAX4993.pdf

Ordering Information