ADG5421FBCPZ-RL7

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG5421FBCPZ-RL7 is a dual single-pole single-throw (SPST) analog switch from Analog Devices, housed in a 10-lead, 3 mm × 2 mm LFCSP package. It features ±60 V fault protection and detection on source pins, ensuring operation in both powered and unpowered states. The device supports dual supplies of ±5 V to ±22 V or a single supply of 8 V to 44 V. Key electrical parameters include a typical on-resistance of 11 Ω, a maximum on-resistance of 21.5 Ω, and an off-isolation of -85 dB at 1 MHz. It operates within a temperature range of -40°C to +125°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Overvoltage fault protection up to ±60 V on source pins during powered and unpowered conditions
• Integrated open-drain fault flag output for digital indication of overvoltage events
• Ultraflat on-resistance with low charge injection for high signal integrity
• Latch-up immune architecture with trench isolation

Analog Switches, Multiplexers, Demultiplexers Applications

• Analog input and output modules
• Process control and distributed control systems
• Data acquisition systems
• Instrumentation and automatic test equipment
• Avionics and communication systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the reel packaging format required for your assembly line. Confirm that the F suffix indicates the extended voltage protection variant compared to standard models. Ensure compatibility with your PCB footprint for the 10-lead LFCSP package. Check for moisture sensitivity level requirements during storage and handling.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when high-voltage fault tolerance is critical for protecting downstream circuitry. The dual SPST configuration allows independent control of two channels. Consider the 11 Ω typical on-resistance for low insertion loss applications. Verify that the 1.8 V logic input compatibility matches your system's control voltage levels.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the ADG5421 family of high-voltage analog switches. It shares the same pinout and basic functionality as the ADG5421 but includes enhanced fault protection capabilities. The BC designation typically refers to the industrial temperature grade and specific manufacturing lot characteristics within the Analog Devices portfolio.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes may include other Analog Devices parts with similar fault protection ratings, such as the ADG5413 series, though channel count and voltage specifications must be verified. Cross-referencing with competitors requires matching the ±60 V protection limit and LFCSP-10 package dimensions.