AD812AR-REEL7

Overview

The AD812AR-REEL7 is a dual, low-power, current feedback video amplifier manufactured by Analog Devices Inc. in an 8-lead SOIC package. It features a unity gain bandwidth of 145 MHz and a slew rate up to 1600 V/ms. The device operates on a single +3 V supply or dual supplies up to ±15 V, with a maximum operating voltage of 36 V. Each channel provides 50 mA output current and maintains excellent video specifications, including 0.02% differential gain error and 0.028° differential phase error into a 150 Ω load.

Feature Summary

• Dual current feedback architecture optimized for professional video electronics
• High-speed performance with 145 MHz bandwidth and 1600 V/ms slew rate
• Low power consumption suitable for portable and battery-powered applications
• Excellent video linearity with minimal differential gain and phase errors

Applications

• Video line drivers
• Professional cameras
• Video switchers
• Special effects equipment

Procurement Notes

Verify the specific REEL7 suffix indicates 7-inch reel packaging when sourcing. Confirm the component matches the AD812 series specifications from Analog Devices. Ensure the SOIC-8 package type aligns with your PCB footprint requirements. Check for RoHS compliance status relevant to your manufacturing standards.

Selection Notes

Select this component for high-speed video signal processing requiring low power dissipation. The current feedback topology ensures consistent bandwidth regardless of gain settings above unity. Verify that the 50 mA output current capability meets the drive requirements for your specific load impedance. Consider the industrial temperature range if operation outside standard commercial limits is necessary.

Part Context

This part belongs to the AD812 family of dual video amplifiers designed for cost-sensitive, high-performance analog applications. It utilizes a complementary bipolar process to achieve wide bandwidth and low distortion. The device integrates two independent amplifiers in a compact plastic package, reducing board space compared to discrete solutions.

Replacement Considerations

Direct replacements include other dual current feedback video amplifiers from Analog Devices. Verify pin compatibility and electrical parameters such as bandwidth and output current before substitution.

FAQ

What is the recommended feedback resistor value for optimal bandwidth?

The datasheet recommends specific metal film values based on the desired closed-loop gain and supply voltage to maintain the widest 0.1 dB bandwidth.

How does the AD812 handle capacitive loads?

It can drive capacitive loads effectively when used with an appropriate output series resistor to prevent peaking or oscillation.