Applications

Datasheet

ISL43L121
Ultra Low ON-Resistance, Single Supply, Dual SPST Analog Switches

Typical Diagram

enlarge +typical diagram

Key Features

    • Low ON Resistance (RON)
      • V+ = 3.0V 0.16Ω
      • V+ = 1.8V 0.26Ω
    • RON Matching Between Channels 0.005Ω
    • RON Flatness Over Signal Range 0.008Ω
    • Single Supply Operation +1.65V to +3.6V
    • Low Power Consumption (PD) <0.12µW
    • Fast Switching Action (V+ = 3.0V)
      • tON 13ns
      • tOFF 13ns
    • ESD HBM Rating >8kV
    • 1.8V Logic Compatible (+3V Supply)
    • Available in 8-Ld thin DFN and 8-Ld MSOP Packages
    • Pb-Free Plus Anneal Available (RoHS Compliant)

Description

The Intersil ISL43L120, ISL43L121, ISL43L122 devices are low ON-resistance, low voltage, bidirectional, precision, dual single-pole/single-throw (SPST) analog switches designed to operate from a single +1.65V to +3.6V supply. Targeted applications include battery powered equipment that benefit from low RON (0.16Ω), low power consumption (0.12µW) and fast switching speeds (tON = 13ns, tOFF = 13ns).

Cell phones, for example, often face ASIC functionality limitations. The number of analog input or GPIO pins may be limited and digital geometries are not well suited to analog switch performance. This family of parts may be used to switch in additional functionality while reducing ASIC design risk. The ISL43L12X are offered in an 8 Ld MSOP package, alleviating board space limitations.

The ISL43L120, ISL43L121, ISL43L122 are dual singlepole/ single-throw (SPST) devices. The ISL43L120 has two normally open (NO) switches; the ISL43L121 has two normally closed (NC) switches; the ISL43L122 has one normally open (NO) and one normally closed (NC) switch and can be used as an SPDT.

Applications

    • Battery Powered, Handheld, and Portable Equipment
      • Cellular/Mobile Phones
      • Pagers
      • Laptops, Notebooks, Palmtops
    • Portable Test and Measurement
    • Medical Equipment
    • Audio and Video Switching

Alternatives

Design Tip

I see many manufacturers offer "+/-15kV ESD Protected" (or "High ESD") products. Does this mean that they all have the same level of protection?

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