50Ω Low-Voltage, Quad SPST/Dual SPDT Analog Switches in WLP

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The MAX4747–MAX4750 low-voltage, quad single-pole single-throw (SPST)/dual single-pole/double-throw (SPDT) analog switches operate from a single +2V to +11V supply and handle rail-to-rail analog signals. These switches exhibit low leakage current (0.1nA) and consume less than 0.5nW (typ) of quiescent power, making them ideal for battery-powered applications.

When powered from a +3V supply, these switches feature 50Ω (max) on-resistance (RON), with 3.5Ω (max) matching between channels and 9Ω (max) flatness over the specified signal range.

The MAX4747 has four normally open (NO) switches, the MAX4748 has four normally closed (NC) switches, and the MAX4749 has two NΩ and two NC switches. The MAX4750 has two SPDT switches. These switches are available in 14-pin TSSOP, 16-pin TQFN (4mm x 4mm), and 16-bump WLP packages. This tiny chip-scale package occupies a 2mm x 2mm area and significantly reduces the required PC board area.

MAX4747: Pin Configuration MAX4747: Pin Configuration Enlarge+

Key Features

  • 2mm x 2mm WLP
  • Guaranteed On-Resistance (RON)
    • 25Ω (max) at +5V
    • 50Ω (max) at +3V
  • On-Resistance Matching
    • 3Ω (max) at +5V
    • 3.5Ω (max) at +3V
  • Guaranteed < 0.1nA Leakage Current at TA = +25°C
  • Single-Supply Operation from +2.0V to +11V
  • TTL/CMOS-Logic Compatible
  • -84dB Crosstalk (1MHz)
  • -72dB Off-Isolation (1MHz)
  • Low Power Consumption: 0.5nW (typ)
  • Rail-to-Rail Signal Handling


  • Audio/Video Signal Routing
  • Battery-Powered Systems
  • Cell Phones
  • Communications Circuits
  • Glucose Meters
  • Low-Voltage Data-Acquisition Systems
  • PDAs
Product Reliability Reports: MAX4748.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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