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AD783JR

AD783JR Description

The AD783JR from Analog Devices Inc. is a high-performance sample-and-hold amplifier (SHA) integrated circuit designed for precision signal acquisition in demanding applications. Housed in an 8-pin SOIC package, this obsolete but still relevant IC operates over a 9.5V to 10.5V supply range with a 9.5mA typical supply current, making it suitable for low-to-moderate power systems. The device features a 15MHz -3dB bandwidth, ensuring fast and accurate signal capture, while its 100nA input bias current minimizes loading effects on the source. With a 5mA output current capability, the AD783JR can drive moderate loads with stability.

AD783JR Features

• Sample-and-Hold Amplifier: Provides precise signal acquisition with minimal droop.
• Wide Supply Range: Operates from 9.5V to 10.5V, accommodating various system requirements.
• High Bandwidth: 15MHz -3dB bandwidth ensures rapid response for dynamic signals.
• Low Input Bias Current: 100nA reduces signal distortion in high-impedance circuits.
• Moderate Output Drive: 5mA output current supports direct interfacing with ADCs or other loads.
• Surface-Mount Package: 8SOIC for compact PCB designs.
• Robust Performance: Operates in 0°C to 70°C environments, suitable for industrial and commercial applications.

AD783JR Applications

The AD783JR excels in systems requiring fast, accurate signal sampling, such as:

• Data Acquisition Systems (DAS): Ensures stable input for ADCs in high-speed digitization.
• Analog-to-Digital Converters (ADCs): Acts as a front-end buffer to minimize aperture uncertainty.
• Test & Measurement Equipment: Provides precise hold functionality for oscilloscopes or spectrum analyzers.
• Communication Systems: Captures transient signals in RF or baseband processing.
• Industrial Control: Used in feedback loops where timing-critical signal sampling is required.

Conclusion of AD783JR

The AD783JR is a reliable sample-and-hold amplifier offering high bandwidth, low input bias current, and robust performance in a compact 8SOIC package. While marked as obsolete, its technical merits make it a viable choice for legacy designs or applications requiring fast, accurate signal capture. Engineers working on data acquisition, ADC interfacing, or precision instrumentation may find this IC particularly valuable despite its discontinued status. For modern alternatives, Analog Devices offers newer SHAs with enhanced specs, but the AD783JR remains a proven solution for specific use cases.