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ADG438FBR

ADG438FBR Description

The ADG438FBR from Analog Devices Inc. is an 8:1 single-channel analog multiplexer/demultiplexer designed for precision signal routing in high-performance electronic systems. Housed in a 16-pin SOIC package, this IC features a low on-state resistance (Ron) of 270Ω (typical) and minimal channel-to-channel matching (ΔRon) of 8.1Ω, ensuring consistent signal integrity across all channels. With a dual supply voltage range of ±15V or a single supply of +15V, it accommodates a wide variety of analog and mixed-signal applications. Although marked as obsolete, its robust design and low leakage current (500pA max) make it suitable for legacy or specialized systems requiring high reliability.

ADG438FBR Features

• Low Leakage Current: Max 500pA ensures minimal signal distortion in high-impedance circuits.
• Fast Switching: Turn-on (Ton) 230ns and turn-off (Toff) 130ns enable rapid signal routing.
• Low Charge Injection: 15pC reduces glitches during switching, critical for precision data acquisition.
• Low Capacitance: 3pF (CS(off)) and 22pF (CD(off)) minimize crosstalk and bandwidth limitations.
• Dual/Single Supply Operation: Supports ±15V or +15V, ideal for bipolar or unipolar systems.
• Channel Matching: Tight ΔRon of 8.1Ω ensures uniform performance across all channels.

ADG438FBR Applications

• Test & Measurement Equipment: High-accuracy signal switching in ATE systems.
• Data Acquisition Systems: Low charge injection preserves signal fidelity in multiplexed ADCs.
• Medical Instrumentation: Reliable performance in patient monitoring and diagnostic devices.
• Industrial Control Systems: Robust operation in harsh environments with ±15V supplies.
• Audio/Video Routing: Low distortion for professional AV signal management.

Conclusion of ADG438FBR

The ADG438FBR excels in applications demanding low noise, fast switching, and high channel uniformity. While obsolete, its low leakage, minimal charge injection, and versatile supply options make it a preferred choice for legacy or niche designs. Engineers seeking a high-performance multiplexer for precision analog systems will find its specifications well-suited for critical signal routing tasks. For modern alternatives, consider newer Analog Devices offerings with enhanced features.