ADG441BR-REEL

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG441BR-REEL is a monolithic CMOS device comprising four independently selectable SPST switches, fabricated on an enhanced LC2MOS process. It supports single or dual supply operation with maximum ratings of 44 V between VDD and VSS. Key electrical parameters include an on-resistance (RON) of up to 70 Ω at +85°C under dual supply conditions, leakage currents of ±3 nA max, and switching times with tON < 110 ns and tOFF < 60 ns. The device features low charge injection of 6 pC max and operates within an industrial temperature range of −40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Enhanced LC2MOS process provides low power dissipation while maintaining high switching speed and flat on-resistance profile for signal linearity.
• Trench isolation technology ensures latch-up immunity even under severe overvoltage conditions.
• Break-before-make switching action prevents channel shorting when configured in multiplexer applications.

Analog Switches, Multiplexers, Demultiplexers Applications

• Audio and video signal switching
• Automatic test equipment
• Precision data acquisition systems
• Battery-powered portable instruments
• Sample-and-hold circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix to confirm packaging format, as REEL indicates tape-and-reel packaging compared to tube options. Ensure the selected variant matches the required logic control polarity; the ADG441 activates with a logic low input. Confirm RoHS compliance status if environmental regulations apply to the manufacturing site. Cross-reference pinout requirements against existing board layouts to ensure compatibility with SOIC-16 footprints.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG441 when low on-resistance and fast switching are critical for audio or video applications. Choose this part over the ADG442 if the system requires switches to turn on with a logic low input rather than a logic high. Consider the ADG444 only if an external 5 V logic supply is available via the VL pin, otherwise rely on the internal voltage generator present in the ADG441 architecture.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG441 belongs to the ADG44x family of quad SPST analog switches from Analog Devices. It serves as a plug-in replacement for legacy parts like the DG441 and DG201A. The BR-REEL designation specifically identifies the standard small outline package variant supplied in tape-and-reel format for automated assembly processes.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The datasheet explicitly lists the ADG441 as a plug-in replacement for the DG441, DG442, and DG444. It also serves as an upgrade for the DG201A, ADG201A, DG202A, ADG202A, and DG211/ADG211A families. Verify that the legacy component's pinout matches the SOIC-16 configuration before substitution.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the ADG441 handle logic control inputs?

The ADG441 switches turn on when a logic low is applied to the appropriate control input and turn off with a logic high. Unlike the ADG444, it does not have a VL pin because the logic power supply is generated internally by an on-chip voltage generator.

What is the maximum analog signal range supported?

The analog signal range extends from VSS to VDD. With maximum supply ratings of 44 V between VDD and VSS, the device can handle large signal swings relative to its power rails.

Why is trench isolation important for this component?

Trench isolation places an insulating oxide layer between the NMOS and PMOS transistors. This eliminates parasitic junctions that could form silicon-controlled rectifier circuits, making the switch completely latch-up proof even during overvoltage conditions.