AD8073JR

Overview

The AD8073JR is a low-cost, triple current feedback video amplifier manufactured by Analog Devices Inc. It integrates three independent amplifiers within a single 14-lead narrow-body SOIC package. The device operates on a single 5 V to 12 V supply or dual supplies up to ±6 V. Key electrical specifications include a 100 MHz –3 dB bandwidth and a 500 V/µs slew rate at a gain of +2. Each amplifier consumes 3.5 mA of quiescent current and provides 30 mA of output drive capability into a 150 Ω load.

Feature Summary

• Integrates three independent high-speed current feedback amplifiers in a compact 14-lead narrow-body SOIC package for space-constrained designs.
• Delivers solid video performance with 0.05% differential gain error and 0.1° differential phase error when driving a 150 Ω load.
• Features fast settling time of 25 ns to 0.1% and recovers quickly from overdrive conditions without significant signal distortion.
• Operates efficiently on a single 5 V supply with outputs swinging to within 1.3 V of the rails.

Applications

• Video line drivers
• Computer video plug-in boards
• RGB or S-video amplifiers in component systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and reel configuration. Confirm that the requested part number matches the commercial temperature range (0°C to 70°C) required for the application. Ensure proper ESD handling procedures are followed during storage and assembly due to the sensitivity of the internal circuitry.

Selection Notes

Select this component for applications requiring multiple video channels where board space is limited. The current feedback architecture offers wide bandwidth independent of the closed-loop gain setting. Verify that the feedback resistor value remains between 649 Ω and 2 kΩ to maintain optimal gain flatness and stability. Consider the power dissipation limits relative to the ambient temperature and PCB layout.

Part Context

The AD8073 is part of the AD8072/AD8073 family of low-cost video amplifiers designed for high-volume consumer electronics. While the AD8072 provides two amplifiers in an 8-lead package, the AD8073 triples the functionality in a 14-lead format. Both devices share similar electrical characteristics but differ in channel count and physical footprint, allowing designers to scale complexity based on system requirements.

Replacement Considerations

The AD8073JN serves as a pin-compatible replacement offering the same triple-channel functionality in a 14-lead plastic DIP package. Designers must verify that the through-hole mounting style aligns with the target PCB design constraints before substituting the surface-mount SOIC variant.