ADG661BRU

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG661BRU is a monolithic CMOS device comprising four independently selectable SPST switches, fabricated using LC2MOS technology. It operates from +5 V single or ±5 V dual supplies with an analog signal range extending to the rails. Key electrical parameters include a maximum on-resistance of 75 Ω at +4.5 V single supply and 50 Ω at ±4.5 V dual supply. Leakage currents are typically ±0.025 nA (max ±2.5 nA). Switching times are 250 ns max (tON) and 45 ns max (tOFF) under single supply conditions. The device features low charge injection of 12 pC typical and operates within a temperature range of –40 °C to +85 °C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• LC2MOS process ensures ultralow power dissipation and low leakage currents.
• Break-before-make switching action prevents channel shorting in multiplexer configurations.
• Flat on-resistance profile over the full analog input range ensures excellent linearity.
• TTL/CMOS compatible digital control logic.

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix RU-16 corresponds to the 16-lead TSSOP package when sourcing. Confirm that the B version designation aligns with the industrial temperature range of –40 °C to +85 °C. Ensure compatibility with existing PCB footprints for the TSSOP-16 form factor during component replacement or new design integration.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG661BRU for applications requiring low distortion and wide signal bandwidth due to its flat Ron profile. Choose this part over inverted logic variants (ADG662) if standard active-low control inputs are preferred. Consider the ADG663 only if mixed logic polarity is required across channels. Verify supply voltage constraints match the +5 V single or ±5 V dual rail specifications.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG661BRU belongs to the ADG661/ADG662/ADG663 family of precision 5 V quad SPST switches. These devices are designed for high-performance analog signal routing where low power consumption and minimal signal distortion are critical. The family utilizes Analog Devices' advanced linear compatible CMOS process to achieve superior leakage and switching characteristics compared to standard CMOS switches.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same family include the ADG662BRU and ADG663BRU, which share identical electrical performance but differ in digital control logic polarity. The ADG662BRU uses active-high logic, while the ADG663BRU combines both active-high and active-low controls. Ensure logic level compatibility when substituting these variants.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the difference between ADG661 and ADG662?

The ADG661 and ADG662 have identical electrical specifications and pinouts. The only difference is the digital control logic: the ADG661 switches turn on with a logic low input, whereas the ADG662 switches turn on with a logic high input.

Does the ADG661 support break-before-make switching?

Yes, the ADG661 exhibits inherent break-before-make switching action. This feature prevents channel shorting when multiple switches are configured as a multiplexer, ensuring reliable signal routing without cross-talk during state transitions.

What is the typical charge injection value?

The typical charge injection is 6 pC under dual supply conditions (VS = 0 V) and 12 pC under single supply conditions. This low charge injection minimizes transients when switching digital inputs, preserving signal integrity.