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AD7503KN

AD7503KN Description

The AD7503KN from Analog Devices Inc. is an 8:1 analog multiplexer/demultiplexer IC designed for precision signal routing in demanding applications. Housed in a 16-pin DIP package, this obsolete but robust component features a low on-state resistance (300Ω max) and excellent channel-to-channel matching (ΔRon = 12Ω), ensuring minimal signal distortion. Operating with a dual supply voltage of ±15V, it supports bidirectional analog or digital signals with low leakage current (2nA max) and fast switching (800ns typ). Its low parasitic capacitance (5pF off-channel, 30pF on-channel) makes it suitable for high-frequency applications.

AD7503KN Features

• Low On-Resistance: 300Ω max reduces signal attenuation.
• High Channel Matching: 12Ω ΔRon ensures consistent performance across channels.
• Fast Switching: 800ns typical Ton/Toff for rapid signal routing.
• Low Leakage: 2nA max minimizes power loss in off-state.
• Wide Supply Range: ±15V dual supply for flexible system integration.
• Low Capacitance: 5pF (CS(off)) and 30pF (CD(off)) for high-speed signal integrity.
• Durable Packaging: Through-hole 16DIP for reliable prototyping and production.

AD7503KN Applications

• Test & Measurement Systems: Precision signal switching in automated test equipment (ATE).
• Audio/Video Routing: Low-distortion multiplexing in broadcast and pro-audio systems.
• Data Acquisition: High-accuracy channel selection in industrial DAQ modules.
• Medical Instrumentation: Reliable signal routing in diagnostic devices.
• Telecom Switching: Low-crosstalk multiplexing for communication hardware.

Conclusion of AD7503KN

The AD7503KN excels in applications requiring low distortion, fast switching, and high channel consistency. While obsolete, its analog performance remains competitive for legacy designs or replacements. Ideal for precision instrumentation, audio systems, and data acquisition, it balances speed, accuracy, and robustness. Engineers seeking a proven ±15V multiplexer with low Ron and leakage will find this IC a reliable choice despite its discontinued status.

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