The DG271AK/883 is a precision, monolithic, dual SPDT (Single-Pole, Double-Throw) analog switch manufactured by Vishay. It is designed for high-performance switching applications where low on-resistance, low charge injection, and fast switching speeds are critical. The /883 designation indicates that this part is manufactured to meet stringent military specifications, ensuring high reliability and performance in demanding environments.

Applications

• Military and Aerospace Systems: Due to its high reliability and adherence to military standards, it is used in communication systems, radar systems, and avionics.
• ATE (Automatic Test Equipment): Its fast switching speeds and low on-resistance make it suitable for signal routing and switching in test and measurement equipment.
• Data Acquisition Systems: Used for multiplexing analog signals in data acquisition systems where precision and speed are important.
• Communication Systems: Used in RF and signal routing applications.
• Precision Instrumentation: Employed in devices that require high accuracy and minimal signal distortion during switching.

Features

• Dual SPDT Configuration: Provides two independent single-pole, double-throw switches in a single package.
• Low On-Resistance: Offers minimal signal loss and distortion with typical on-resistance values around 15 ohms.
• Fast Switching Speed: Enables rapid signal switching with typical turn-on and turn-off times in the nanosecond range.
• Low Charge Injection: Minimizes switching transients and ensures signal integrity.
• Wide Operating Voltage Range: Supports a broad range of supply voltages, typically from ±5V to ±15V.
• TTL/CMOS Compatibility: Compatible with standard logic levels for easy integration with digital control systems.
• Military Temperature Range: Operates reliably over a wide temperature range, typically from -55°C to +125°C.

Benefits

• High Reliability: The /883 designation ensures that the part meets rigorous military standards for reliability and performance.
• Improved Signal Integrity: Low on-resistance and charge injection minimize signal loss and distortion.
• Increased System Performance: Fast switching speeds enable rapid signal routing and processing.
• Simplified System Design: Dual SPDT configuration reduces component count and simplifies circuit layout.
• Versatile Application: Suitable for a wide range of analog switching applications.

Additional Details

The DG271AK/883 is typically available in a hermetically sealed package, such as a ceramic DIP (Dual In-line Package), to ensure robustness and reliability in harsh environments. It features break-before-make switching action to prevent shorting of signals during switching. Detailed electrical characteristics, including on-resistance variation with voltage and temperature, switching times, and leakage currents, can be found in the manufacturer's datasheet. This part is often used in applications requiring stringent performance and environmental requirements.