ZXFV4089N8TC

Overview

The ZXFV4089N8TC is a DC restored video amplifier in an 8-pin SOIC package. It integrates a high-performance video amplifier with a nulling sample and hold amplifier to provide brightness level stability. The device operates on ±5V supplies within the -40°C to +85°C temperature range. Key electrical characteristics include a 210 MHz -3 dB bandwidth, 30 MHz 0.1 dB bandwidth, 400 V/µs slew rate, 0.08% differential gain, and 0.1° differential phase.

Feature Summary

• Integrates a complete analog video DC level restoration system with a current feedback architecture for fixed bandwidth across gains.
• Supports PAL, NTSC, and SECAM TV systems with excellent video performance metrics.
• Features a TTL/CMOS logic compatible HOLD input for precise black-level clamping control.

Applications

• Black level clamp providing stable intensity in cameras
• Image capture systems
• Video mixing equipment
• Displays

Procurement Notes

Verify the specific ordering suffix N8TC against the manufacturer's official documentation to confirm reel size and quantity per reel specifications. Ensure compatibility with standard SOIC-8 footprint dimensions during PCB layout design. Confirm that power supply filtering meets the recommended decoupling requirements for high-speed analog circuits.

Selection Notes

Select this component when a dedicated DC restoration solution is required for analog video signals. It serves as a direct pin and function replacement for the industry-standard EL4089. Consider its current feedback architecture if maintaining consistent bandwidth at varying gain settings is necessary for the application design.

Part Context

This part belongs to the Zetex product line acquired by Diodes Incorporated. It is designed specifically for professional video processing applications requiring accurate black-level clamping. The device simplifies circuit design by integrating the sample-and-hold functionality directly into the amplifier structure.

Replacement Considerations

The ZXFV4089N8TC is pin and function compatible with the industry standard EL4089. Verify that the existing application circuit does not exceed the maximum voltage limits at pin 2 (+2.7V) to ensure optimal DC restoration accuracy when substituting.

FAQ

How does the device handle DC restoration?

The device uses a sample-and-hold amplifier that forces the video amplifier input to a reference voltage during the back-porch interval of the analog video waveform, stabilizing the brightness level.

What are the power supply requirements?

The device is specified for operation at ±5V, with a recommended dual supply voltage range of ±4.75V to ±5.25V.