MAX4905

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


Please check latest availability status for a specific part variant.

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.

MAX4901, MAX4902, MAX4903, MAX4904, MAX4905: Typical Operating Circuit MAX4901, MAX4902, MAX4903, MAX4904, MAX4905: Typical Operating Circuit Enlarge+

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

    See parametric specs for Switches and Multiplexers ≤ 5V (165)


    Part NumberProtocolConfigurationChannelsNormal PositionVSUPPLY (Single)
    (V)
    VSUPPLY (Single)
    (V)
    VSIGNAL
    (V)
    VSIGNAL
    (V)
    Dynamic Range (max)
    (V)
    RON
    (Ω)
    RFLAT(ON)
    (Ω)
    Bandwidth
    (MHz)
    IL(OFF)
    (nA)
    tON
    (ns)
    tOFF
    (ns)
    QINJECTION
    (pC)
    Package/PinsBudgetary
    Price
    minmaxminmaxmaxmaxtypmaxmaxmaxSee Notes
    MAX4901 AudioSPST2Open1.85.5-3.75.55.510.25276100100125
    TDFN/8
    UCSP (B)/9
    $1.01 @1k
    MAX4903 
    2-to-1
    SPDT
    1-
    TDFN/8
    UCSP (B)/9
    $1.23 @1k
    MAX4904 
    2-to-1
    SPDT
    1-
    TDFN/8
    UCSP (B)/9
    $1.01 @1k

    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.
    Request Reliability Report for: MAX4905 
    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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