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The Intersil ISL43240 device is a CMOS, precision, quad SPDT analog switch designed to operate from a single +2V to +12V supply or from a ±2V to ±6V supply. Targeted applications include battery powered equipment that benefit from the devices’ low power consumption (5µW), low leakage currents (5nA max), and fast switching speeds (t_ON = 52ns, t_OFF = 40ns). A 5Ω maximum r_ON flatness ensures signal fidelity, while channel-to-channel mismatch is guaranteed to be less than 2Ω.

The ISL43240 is a quad single-pole/double-throw (SPDT) device and can be used as a quad SPDT, a quad 2:1 multiplexer, a single 4:1 multiplexer or a dual 2-channel differential multiplexer.Table 1 summarizes the performance of this family.

Key Features

• Fully specified for 10% tolerances at VS = ±5V and V+ = 12V, 5V and 3.3V
• Four separately controlled SPDT switches
• ON-resistance (rON): 18Ω
• rON matching between channels: <1Ω
• Low charge injection: 5pC (Max)
• Low power consumption (PD): <5µW
• Low off leakage current (max at +85°C): 2.5nA
• Fast switching action
  • tON: 52ns
  • tOFF: 40ns
• Guaranteed break-before-make
• Minimum 2000V ESD protection per Method 3015.7
• TTL, CMOS compatible
• Pb-free (RoHS compliant)

Applications

• Battery powered, handheld, and portable equipment
  • Barcode scanners
  • Laptops, notebooks, palmtops
• Communications systems
  • Radios
  • XDSL and PBX/PABX
  • RF “Tee” switches
  • Base stations
• Test equipment
  • Medical ultrasound
  • Electrocardiograph
  • ATE
• Audio and video switching
• General purpose circuits
  • +3V/+5V DACs and ADCs
  • Digital filters
  • Operational amplifier gain switching networks
  • High frequency analog switching
  • High speed multiplexing