ALD4211PCL

Analog Switches, Multiplexers, Demultiplexers Overview

The ALD4211PCL is a quad SPST CMOS analog switch manufactured by Advanced Linear Devices Inc. It operates with single supplies from +3V to +12V or dual supplies from ±1.5V to ±6V. Key electrical parameters include an on-resistance of 90Ω to 135Ω at ±5V, charge injection of 0.2pC typical, and supply current of 0.01μA typical. The device supports rail-to-rail signal ranges and features break-before-make switching. It is housed in a 16-pin Plastic DIP package and operates within a temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Ultra-low charge injection achieved through special charge balancing and cancellation circuitry.
• Rail-to-rail analog signal range capability for full voltage utilization.
• Micropower consumption with picoamp leakage currents suitable for battery-operated systems.
• Break-before-make switching functionality guaranteed during single supply operation.

Analog Switches, Multiplexers, Demultiplexers Applications

• Fast sample and hold circuits
• Programmable gain amplifiers
• Analog signal multiplexers
• Switched capacitor circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix 'PC' corresponds to the 16-pin Plastic DIP package configuration required for your design. Confirm that the industrial temperature rating (-40°C to +85°C) aligns with your operational environment specifications before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when ultra-low charge injection (0.2pC) and high precision are critical for maintaining signal integrity in sampling applications. Ensure the logic input levels match the available supply voltage, as VIH varies between 0.8V and 4.0V depending on the V+ level.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ALD4211PCL belongs to the ALD4211/ALD4212/ALD4213 family of quad SPST CMOS analog switches. These devices share identical pinouts and core performance characteristics but differ in internal logic states for switch activation. The ALD4211 specifically activates Switches 1 and 4 when the input is low.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional replacements within the same family include ALD4212 and ALD4213, provided the inverted logic requirements are accommodated in the system design. Verify package compatibility if substituting with other manufacturers' quad SPST switches.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the ALD4211 logic state affect switch activation?

For the ALD4211, Switches 1 and 4 turn ON when the input logic is Low (0), while Switches 2 and 3 remain OFF. Conversely, Switches 2 and 3 turn ON when the input is High (1).

What is the impact of using standard pinout connections on charge injection?

Using standard pinout connections where inputs are connected to OUT pins and COM pins serve as outputs can increase typical charge injection to approximately 5pC due to dominant pin-to-pin capacitive coupling effects.

Is break-before-make switching guaranteed for all supply configurations?

Break-before-make switching is explicitly guaranteed with single supply operation. For dual supply operation, the datasheet notes that break-before-make time is not guaranteed.