ADG781BCP

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG781BCP is a monolithic CMOS device containing four independently selectable SPST switches in a 20-lead 4 mm × 4 mm Chip Scale Package. It operates on a single supply voltage ranging from 1.8 V to 5.5 V. The B version supports an industrial temperature range of –40°C to +85°C. Key electrical parameters include a typical on resistance of 2.5 Ω (max 4 Ω at 5 V) and a –3 dB bandwidth exceeding 200 MHz. Switching times are specified with a maximum tON of 16 ns and a maximum tOFF of 10 ns. Power consumption is minimal, with a typical supply current of 0.001 μA.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Rail-to-rail analog signal operation across the full supply voltage range.
• Low power dissipation achieved through advanced submicron CMOS construction.
• TTL/CMOS compatible logic inputs for direct interfacing with digital control systems.

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery powered systems requiring low quiescent current.
• Communication systems utilizing high-speed signal routing.
• Sample hold circuits demanding fast switching transitions.
• Audio and video signal routing applications.
• Mechanical reed relay replacement in compact designs.

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix when purchasing. The base model ADG781BCP corresponds to the CP-20-6 package option. Standard procurement often utilizes the REEL7 variant for tape-and-reel handling. Confirm RoHS compliance status via the 'Z' suffix if required by assembly specifications. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS structure.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG781BCP for applications requiring four independent SPST channels in a minimal footprint. Choose this part over the ADG782 or ADG783 if break-before-make timing is not required for multiplexing. Verify that the 2.5 Ω typical on resistance meets the signal integrity requirements of the specific analog path. Ensure the operating voltage stays within the 1.8 V to 5.5 V limit to maintain specified leakage and bandwidth performance.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG781 belongs to the ADG781/ADG782/ADG783 family of quad SPST switches. These devices share the same 20-lead LFCSP physical package and core switching architecture. The primary distinction between the family members lies in their internal logic configuration and switching behavior, specifically regarding multiplexing capabilities. This component represents the standard non-multiplexing variant within the series.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Functionally equivalent devices in different packages include the ADG711 and ADG712, which utilize 16-lead TSSOP and SOIC formats. When substituting, verify pinout compatibility and ensure the alternative package supports the required thermal and mechanical constraints of the design.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the difference between the ADG781 and ADG783?

The ADG781 consists of four independent SPST switches controlled individually. The ADG783 features a multiplexer configuration where switches 2 and 3 are complementary to switches 1 and 4, providing break-before-make timing to prevent channel shorting.

Does the ADG781 support dual supplies?

No, the ADG781 is designed for single-supply operation ranging from 1.8 V to 5.5 V. The analog signal range is limited from GND (0 V) to VDD.

What is the maximum continuous current per switch?

The absolute maximum rating for continuous current through the Source (S) or Drain (D) terminals is 30 mA. Peak pulsed current is rated at 100 mA.