AS1751S

Analog Switches, Multiplexers, Demultiplexers Overview

The AS1751S is a high-speed, low-voltage, single-supply quad SPST analog switch manufactured by ams-OSRAM USA INC. It operates from a +1.6V to +3.6V supply and features four normally open switches. The device provides an ON-resistance of 0.9Ω at +3V and 2.5Ω at +1.8V, with RON matching of 0.12Ω and flatness of 0.1Ω at +3V. Switching speeds are characterized by tON of 22ns and tOFF of 14ns at +3V. It handles continuous currents up to 250mA and supports rail-to-rail signal handling. The component is housed in a 14-pin TSSOP package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Quad SPST configuration with four independent normally open channels
• Low ON-resistance for minimal signal loss across the supply range
• Rail-to-Rail signal handling capability for full voltage swing switching
• 1.8V CMOS logic compatible input interface

Analog Switches, Multiplexers, Demultiplexers Applications

• Power routing systems
• Cordless and mobile phones
• MP3 players and digital cameras
• Sample and hold circuits
• Op-amp gain switching networks

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix 'S' corresponds to the 14-pin TSSOP tube delivery form as listed in the official datasheet. Confirm that the component meets the required operating temperature range of -40°C to +85°C for the intended application environment. Ensure proper power supply sequencing during integration to maintain device reliability.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a low-voltage, single-supply analog switch is required for portable or battery-powered applications. The AS1751S is suitable for designs needing fast switching speeds and low on-resistance within a 1.6V to 3.6V supply window. Consider the 14-pin TSSOP package constraints and ensure the layout accommodates the necessary bypass capacitance near the V+ pin.

Analog Switches, Multiplexers, Demultiplexers Part Context

The AS1751S belongs to the AS175x family of high-speed analog switches, which also includes the AS1752 (normally closed) and AS1753 (mixed NO/NC). These devices share similar electrical characteristics and packaging options but differ in their internal switch configurations. The AS1751 specifically provides four normally open switches, distinguishing it from the other variants in the series.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes within the same family include the AS1752S and AS1753S, provided the switch state requirements (NO vs NC) align with the circuit design. Other models in the series offer identical electrical performance but different terminal states.