ADA4420-6ARQZ-R7

Overview

The ADA4420-6ARQZ-R7 is a low-cost, six-channel video reconstruction filter designed for consumer applications. It integrates three independent sixth-order Butterworth filters/buffers for standard definition (Y/C or CVBS) and three for high definition component signals (YPrPb or RGB). Operating from a single 5 V supply with a typical quiescent current of 32 mA, the device features rail-to-rail outputs with 6 dB gain and a built-in 250 mV offset for DC coupling. Each channel includes a transparent sync tip clamp and can drive two 75 Ω doubly terminated cables.

Feature Summary

• Sixth-order Butterworth filtering for both SD and HD signal paths
• Transparent input sync tip clamp enabling AC coupling without DC restoration
• Rail-to-rail output drivers with 6 dB gain and 250 mV built-in offset
• Low power consumption with a dedicated disable feature reducing current to under 8 μA

Applications

• Set-top boxes
• DVD players and recorders
• HDTVs
• Projectors
• Personal video recorders

Procurement Notes

Verify the package type matches the design requirements, as the ADA4420-6 is available in both 16-lead QSOP and 20-lead TSSOP configurations. Confirm that the specific suffix corresponds to the desired reel quantity and ensure compatibility with the extended industrial temperature range of −40°C to +85°C. Cross-reference the datasheet specifications against system voltage and load requirements before finalizing procurement.

Selection Notes

Select this component when multiple channels of video reconstruction filtering are required in a single package. The device is suitable for designs needing simultaneous processing of SD and HD signals with minimal external components. Consider the power constraints, as the active current is 32 mA, but utilize the disable pin for significant power savings in standby modes. Ensure PCB layout adheres to high-speed practices to maintain signal integrity.

Part Context

The ADA4420-6 belongs to Analog Devices' family of low-cost video filter amplifiers. It is specifically engineered to replace discrete filter solutions in consumer electronics, offering integrated buffering and filtering capabilities. The device simplifies board space and reduces component count by combining multiple filter stages into a single IC, targeting cost-sensitive mass-market video products.

Replacement Considerations

Check for direct pin-compatible alternatives within the same product family if different packaging options like the 20-lead TSSOP are preferred. Verify that any substitute maintains the sixth-order filter characteristics and compatible supply voltage ranges.