AS1742 Datasheet, austriamicrosystems

! ON-Resistance: - 0.8Ω (+3V supply) - 2.5Ω (+1.8V supply) ! ! ! ! ! ! ! ! ! ! ! RON Matching: 0.08Ω (+3V supply) RON Flatness: 0.18Ω (+3V supply) Supply Voltage Range.

These highly-reliable devices operate from a single +1.6 to +3.6V supply, and are differentiated by the type and number.