Low Voltage, Single Supply, Dual SPST, SPDT Analog Switches

The Intersil ISL5120, ISL5121, ISL5122, ISL5123 devices are precision, bidirectional, dual analog switches designed to operate from a single +2.7V to +12V supply. Targeted applications include battery powered equipment that benefit from the devices’ low power consumption (5µW), low leakage currents (100pA max), and fast switching speeds (tON = 28ns, tOFF = 20ns). 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 “mux-in” additional functionality while reducing ASIC design risk. Some of the smallest packages are available, alleviating board space limitations and making Intersil’s newest line of low-voltage switches an ideal solution.

Features

• Improved (lower rON, faster switching), pin compatible replacements for ISL84541, ISL84542, ISL84543, ISL84544

• Fully specified at 3.3V, 5V, and 12V supplies

• ON resistance (rON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Ω

• rON matching between channels . . . . . . . . . . . . . . . . . . . . . . . ≤1Ω

• Low charge injection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5pC (Max)

• Single supply operation . . . . . . . . . . . . . . . . . . . . . . +2.7V to +12V

• Low power consumption (PD) . . . . . . . . . . . . . . . . . . . . . . . . <5µW

• Low leakage current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10nA

• Fast switching action

- tON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28ns

- tOFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ns

• Guaranteed break-before-make (ISL5122/ISL5123 only)

• Minimum 2000V ESD protection per method 3015.7

• TTL, CMOS compatible

• Available in SOT-23 packaging

• Pb-free (RoHS compliant)

Applications

• Battery powered, handheld and portable equipment

- Cellular/mobile phones

- Pagers

- Laptops, notebooks, palmtops

• Communications systems

- Military radios

- PBX, PABX

• Test equipment

- Ultrasound

- Electrocardiograph

• Heads-up displays

• Audio and video switching

• Various circuits

- +3V/+5V DACs and ADCs

- Sample and hold circuits

- Digital filters

- Operational amplifier gain switching networks

- High frequency analog switching

- High speed multiplexing

- Integrator reset circuits