ADG444BRZ

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG444BRZ is a monolithic CMOS device comprising four independently selectable single-pole single-throw (SPST) switches. It operates with a logic power supply applied to the VL pin and supports dual or single-rail configurations. The analog signal range extends from VSS to VDD, accommodating maximum supply ratings of 44 V. Key electrical parameters include an on-resistance (RON) of up to 70 Ω at +25°C and 85 Ω across the industrial temperature range of -40°C to +85°C. Switching times are specified with tON max at 110 ns and tOFF max at 60 ns under dual supply conditions. The device features low leakage currents of 3 nA max and charge injection of 6 pC max.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Trench isolation technology provides latch-up immunity for A grade parts.
• Break-before-make switching action prevents channel shorting in multiplexer applications.
• Flat on-resistance profile ensures good linearity and low distortion for audio signals.
• Ultralow power dissipation suitable for portable and battery-powered instruments.

Analog Switches, Multiplexers, Demultiplexers Applications

• Audio and video switching
• Automatic test equipment
• Precision data acquisition
• Battery-powered systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix to confirm package type and compliance status. The 'BRZ' designation indicates a lead-free, RoHS-compliant part in a 16-lead Standard Small Outline Package. Confirm that the design requires the dedicated VL pin for logic power, distinguishing it from internal generator variants like the ADG441. Ensure voltage limits align with system requirements before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG444BRZ when a dedicated 5 V logic supply is available via the VL pin. This variant differs from the ADG441/ADG442, which generate internal logic power. Verify that the required on-resistance and switching speed meet the application's dynamic performance needs. Consider the SOIC-16 footprint for PCB layout constraints compared to DIP packages.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG444BRZ belongs to the ADG44x family of LC2MOS quad SPST switches. It serves as a plug-in replacement for legacy DG444 devices. The component utilizes trench isolation to eliminate parasitic junctions, ensuring robust operation under overvoltage conditions. It is designed for high-speed signal routing where low distortion and minimal power consumption are critical.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The ADG444BRZ is a direct functional replacement for the DG444. For DIP package equivalents, consider the ADG444BNZ. Variants without the VL pin, such as the ADG441BRZ, require different logic interface designs due to internal voltage generation.