AD8184AR

Overview

The AD8184AR is a high-speed 4-to-1 video multiplexer manufactured by Analog Devices Inc. It features a -3 dB signal bandwidth of 700 MHz and a slew rate of 750 V/µs. The device operates on ±5 V supplies with a quiescent current of 4.4 mA. Key electrical parameters include a channel switching time of 10 ns, an enable-to-channel ON time of 12 ns, and an OFF isolation of -115 dB at 5 MHz. It provides excellent video specifications such as 0.01% differential gain error and 0.01° differential phase error. The component is housed in a 14-lead Narrow SOIC package.

Feature Summary

• Fully buffered inputs and outputs for high impedance driving capabilities
• Fast channel switching with low glitch magnitude for precise signal routing
• High speed disable feature allowing multiple devices to be cascaded without loading the output bus
• Excellent video performance metrics including low differential gain and phase errors

Applications

• Video switchers and routers
• Pixel switching for Picture-In-Picture applications
• Switching in LCD and Plasma displays
• Color document scanners using CCD arrays

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging options. Confirm that the selected variant matches the required temperature range and package style for your design constraints. Cross-reference the part number with authorized distributors to validate availability status and lead times prior to finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring high bandwidth video multiplexing with low power consumption. Ensure the application can accommodate the ±5 V dual supply requirement. Consider the 14-lead SOIC package dimensions during PCB layout. Verify that the settling time meets the requirements for the target sampling rates if used with analog-to-digital converters.

Part Context

The AD8184 belongs to the AD8184 series of high-speed video multiplexers from Analog Devices. It is pin-compatible with legacy parts like the HA4314 and GX4314. The series includes single and dual 2-to-1 variants such as the AD8180 and AD8182. This family is designed for professional video applications requiring fast switching and minimal signal distortion.

Replacement Considerations

The AD8184AN is a direct replacement offering the same functionality in a 14-lead PDIP package. Designers should verify pin compatibility and thermal dissipation characteristics when substituting between SOIC and DIP packages.

FAQ

How does the AD8184 handle disabled channels?

When the ENABLE input is HIGH, all buffers are disabled, placing the output in a high impedance state. This prevents OFF channels from loading the output bus, allowing multiple devices to be connected in parallel.

What is the maximum operating voltage for the AD8184?

The absolute maximum supply voltage rating is 12.6 V. However, the recommended operating range is ±4 V to ±6 V, typically utilizing ±5 V supplies.

Can the AD8184 drive a 75 Ω terminated line directly?

Yes, the AD8184 can drive back-terminated 75 Ω lines. For optimal performance in such configurations, external buffering with op amps like the AD8009 may be used to compensate for signal halving due to termination.