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

Reduces Clicks and Pops Without Requiring Additional Components

Please check latest availability status for a specific part variant.


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.
MAX4991, MAX4992, MAX4993, MAX4994: Typical Application Circuit MAX4991, MAX4992, MAX4993, MAX4994: Typical Application Circuit Enlarge+

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)


  • Audio Signal Routing
  • Cellular Phones
  • Portable MP3 Players
  • Speaker Headset Source Switching

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX4993EVKIT: Evaluation Kit for the MAX4993
Product Reliability Reports: MAX4992.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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