AD8074ARUZ-REEL

Overview

The AD8074ARUZ-REEL is a high-speed triple video buffer with a fixed gain of +1, manufactured by Analog Devices Inc. It operates on dual supplies ranging from ±4.5 V to ±5.5 V and consumes less than 30 mA of quiescent current. The device features a –3 dB full signal bandwidth exceeding 450 MHz, with specific measurements of 600 MHz at 200 mV p-p and 500 MHz at 2 V p-p. It exhibits a slew rate of 1600 V/µs and a fast settling time of 4 ns. Key video specifications include 0.01% differential gain error, 0.01° differential phase error, and excellent crosstalk isolation better than –80 dB at 10 MHz.

Feature Summary

• Triple-channel architecture providing independent buffering for RGB signals with low input capacitance and high input impedance.
• Integrated high-speed output disable feature that places outputs in a high-impedance state to minimize loading in matrix configurations.
• Optimized for driving reverse-terminated video loads with minimal overshoot and high phase margin for superior pixel resolution.
• TTL-compatible logic control for the output enable pin, allowing straightforward integration into digital switching systems.

Applications

• RGB buffering in LCD and plasma displays
• RGB driver circuits
• Video routers and multiplexers

Procurement Notes

Verify the ordering suffix REEL indicates tape-and-reel packaging when sourcing this component. Confirm RoHS compliance status as indicated by the Z suffix in the base part number. Ensure the supply voltage range matches the required ±4.5 V to ±5.5 V operation. Check for availability of the RU-16 package variant if lead-free specifications are mandatory for the assembly process.

Selection Notes

Select the AD8074ARUZ-REEL when a unity gain configuration is required for triple-channel video applications. Choose this over the AD8075 if a gain of two is not needed. Consider the 16-lead TSSOP package constraints for PCB layout. Evaluate the power dissipation limits against ambient temperature conditions to ensure reliable operation within the specified junction temperature range.

Part Context

This component belongs to the AD8074/AD8075 family of high-speed video buffers designed for demanding display and video routing applications. It shares architectural similarities with the AD8075 but differs in its fixed gain setting. The family is characterized by wide bandwidth and low distortion, making it suitable for high-resolution graphics signals. It is distinct from precision amplifiers or general-purpose op-amps due to its specialized video performance metrics.

Replacement Considerations

The AD8075ARUZ-REEL serves as a functional substitute if a gain of +2 is acceptable or desired instead of unity gain. Both devices share identical pinouts, packages, and electrical characteristics except for the internal feedback network determining the gain.

FAQ

How does the output disable feature function?

The OE (Output Enable) pin controls the state of all three channels. When OE is high, the outputs enter a high-impedance state, minimizing loading on the bus and reducing power consumption to approximately one-fifth of the enabled state.

What is the maximum operating supply voltage?

The absolute maximum supply voltage is 12.0 V. However, the recommended operating range is ±4.5 V to ±5.5 V for optimal performance and reliability.

Can the device operate on a single supply?

Yes, the AD8074 can operate on a single 10 V supply. In this configuration, the AGND pins must be tied near mid-supply to provide the reference for the internal ground buffer, while logic remains referenced to DGND.