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AD781JN

AD781JN Description

The AD781JN from Analog Devices Inc. is a precision sample-and-hold amplifier (SHA) integrated circuit designed for high-speed data acquisition systems. Housed in an 8-pin DIP package, this obsolete but robust IC operates over a wide supply voltage range of 21.6V to 26.4V, making it suitable for industrial and instrumentation applications. With a 4MHz bandwidth and low input bias current of 50nA, it ensures accurate signal capture and minimal distortion. The device features a 5mA output current capability, supporting moderate load conditions, and operates within a 0°C to 70°C temperature range.

AD781JN Features

• High-Speed Performance: 4MHz bandwidth enables rapid signal sampling, ideal for fast transient applications.
• Low Input Bias Current: 50nA minimizes errors in high-impedance circuits.
• Wide Supply Range: 21.6V to 26.4V accommodates various industrial power supplies.
• Moderate Output Drive: 5mA output current supports typical load requirements.
• Through-Hole Mounting: 8-pin DIP package ensures easy prototyping and legacy system compatibility.
• Low Power Consumption: 4mA supply current balances performance and energy efficiency.

AD781JN Applications

• Data Acquisition Systems: Ensures precise sampling in ADCs and multiplexed systems.
• Industrial Instrumentation: Suitable for process control and test equipment due to its wide supply range.
• Audio Signal Processing: Maintains signal integrity in high-fidelity audio applications.
• Medical Electronics: Used in diagnostic equipment where accurate signal capture is critical.
• Legacy System Maintenance: Ideal for repairing or upgrading older designs requiring through-hole components.

Conclusion of AD781JN

The AD781JN is a reliable sample-and-hold amplifier offering high-speed performance, low noise, and robust power supply tolerance. While obsolete, its through-hole packaging and stable operation make it valuable for legacy systems, industrial controls, and precision measurement applications. Engineers seeking a proven SHA for moderate-speed data acquisition will find this IC a dependable choice.