MAX4994
Low RON, Dual-SPDT/Single-DPDT Analog Switches with Slow Turn-On Time
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Reduces Clicks and Pops Without Requiring Additional Components
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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)
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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.
Applications
- Audio Signal Routing
- Cellular Phones
- Portable MP3 Players
- Speaker Headset Source Switching
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MAX4994
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Software & Part Ecosystem
Evaluation Kits 1
MAX4993EVKIT
Evaluation Kit for the MAX4993
Product Detail
The MAX4993 evaluation kit (EV kit) demonstrates the MAX4993 double-pole/double-throw (DPDT) analog switch featuring low on-resistance (0.3Ω RON) and slow turn-on time for click-and-pop reduction in portable audio applications. The IC features a space-saving package, low THD+N (0.004%), and low supply current (1.2µA at 3V). The EV kit can operate from a 1.8V to 5.5V DC power supply and comes configured to operate from USB power.
Applications
- Audio Signal Routing
- Cellular Phones
- Portable MP3 Players
- Speaker Headset Source Switching