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Low-RON, Dual-SPST/Single-SPDT Clickless Switches with Negative Rail Capability

Product Details

Key Features

Parametric specs for Switches and Multiplexers (Low Voltage)
Protocol Audio
Configuration SPST
# Channels 2
Normal Position Open
VSUPPLY (Single) (V) (min) 1.8
VSUPPLY (Single) (V) (max) 5.5
VSIGNAL (V) (min) -3.7
VSIGNAL (V) (max) 5.5
Dynamic Range (max) (V) (max) 5.5
RON (Ω) (max) 1
RFLAT(ON) (Ω) (typ) 0.25
Package/Pins TDFN/8
UCSP (B)/9
Budgetary
Price (See Notes)
1.14
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Simplified Block Diagram

Technical Docs

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Parameters

Parametric specs for Switches and Multiplexers (Low Voltage)
Protocol Audio
Configuration SPST
# Channels 2
Normal Position Open
VSUPPLY (Single) (V) (min) 1.8
VSUPPLY (Single) (V) (max) 5.5
VSIGNAL (V) (min) -3.7
VSIGNAL (V) (max) 5.5
Dynamic Range (max) (V) (max) 5.5
RON (Ω) (max) 1
RFLAT(ON) (Ω) (typ) 0.25
Package/Pins TDFN/8
UCSP (B)/9
Budgetary
Price (See Notes)
1.14

Key Features

  • Distortion-Free Signal Throughput Down to VCC - 5.5V
  • Comparator for Headphone or Mute Detection (MAX4905)
  • Clickless Switches with Internal Shunt Resistors (MAX4902/MAX4904/MAX4905)
  • 0.6Ω (typ) Low On-Resistance (RON)
  • 0.25Ω On-Resistance Flatness
  • +1.8V to +5.5V Supply Voltage
  • 0.04% THD
  • Applications/Uses

    • Cell Phones
    • MP3 Players
    • Notebook Computers
    • PDAs and Handheld Devices

    Description

    The MAX4901–MAX4905 switches feature negative signal capability that allows signals below ground to pass through without distortion. The MAX4901/MAX4902 are a dual SPST (single-pole/single-throw) and the MAX4903/MAX4904/MAX4905 are a single SPDT (single-pole/double-throw) configuration. These analog switches operate from a single +1.8V to +5.5V supply and have low 0.6Ω on-resistance, making them ideal for switching audio signals.

    The MAX4905 includes a comparator that can be used for headphone detection or mute/send key function. The MAX4902/MAX4904/MAX4905 have internal shunt resistors to automatically discharge any capacitance at the NO_ and NC connection points. This reduces click-and-pop sounds that occur when switching audio signals between pre-charged points. A break-before-make feature and auto-discharge also help to reduce popping.

    These SPST and SPDT switches are available in space-saving 8-pin TDFN and 9-bump UCSP™ packages and operate over the -40°C to +85°C extended temperature range.

    Simplified Block Diagram

    MAX4901, MAX4902, MAX4903, MAX4904, MAX4905: Typical Operating Circuit MAX4901, MAX4902, MAX4903, MAX4904, MAX4905: Typical Operating Circuit Zoom icon

    Technical Docs

    Support & Training

    Search our knowledge base for answers to your technical questions.

    Filtered Search

    Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

    Sampling:
    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.