AD8180AR

Overview

The AD8180AR is a single-channel, high-speed 2-to-1 multiplexer manufactured by Analog Devices Inc. in an 8-lead SOIC package. It operates on dual supplies ranging from ±4 V to ±6 V with a typical quiescent current of 3.8 mA. The device features fully buffered inputs and outputs, providing a –3 dB small-signal bandwidth exceeding 750 MHz (up to 930 MHz) and a slew rate of 750 V/µs. Key switching characteristics include a channel switching time of 10 ns and a settling time of 14 ns to 0.1%. It offers excellent video performance metrics, including 0.02% differential gain error, 0.02° differential phase error, and less than 35 mV glitch energy. The component provides high 'OFF' isolation of –90 dB at 5 MHz and low all-hostile crosstalk of –80 dB at 5 MHz.

Feature Summary

• Fully buffered input and output architecture ensures unidirectional signal flow and constant low input capacitance independent of load impedance.
• Fast channel switching capability with 10 ns transition times suitable for pixel-level switching applications.
• High-speed disable feature allows multiple outputs to be connected in parallel for cascading stages without loading the output bus.
• Optimized video specifications including minimal differential gain and phase errors for professional video multiplexing.

Applications

• Pixel switching for Picture-In-Picture displays
• Switching in LCD and Plasma Displays
• Video switchers and routers

Procurement Notes

Verify the specific ordering suffix to confirm the packaging format, as the base part number corresponds to tube packaging while suffixes like -REEL or -REEL7 indicate reel quantities. Ensure the voltage supply rails match the specified ±4 V to ±6 V range during integration. Confirm that the 8-lead SOIC footprint aligns with the PCB layout requirements for surface-mount assembly.

Selection Notes

Select the AD8180AR when a single-channel solution is required for high-bandwidth video signals. For dual-channel applications requiring two independent 2-to-1 multiplexers, consider the AD8182 variant instead. Evaluate the power supply constraints, as the device requires dual polarity voltages rather than a single supply. Verify that the system can accommodate the necessary termination resistors to achieve optimal frequency response and flatness.

Part Context

The AD8180 belongs to the AD8180/AD8182 family of high-speed video multiplexers designed for professional video applications. It utilizes a proprietary dielectrically-isolated complementary bipolar process to achieve fast switching speeds with low power dissipation. The device is distinct from CMOS switches by offering open-loop buffer architecture, which minimizes switching glitches and maintains consistent input impedance across varying load conditions.

Replacement Considerations

The AD8182AR serves as the dual-channel equivalent within the same product family, offering identical electrical performance in a 14-lead package. Direct pin-compatible replacements are not available due to the unique internal buffer architecture; however, system redesign may allow substitution if channel count and package size constraints permit.