ADA4420-6ARUZ-R7

Overview

The ADA4420-6ARUZ-R7 is a low-cost video reconstruction filter featuring six independent sixth-order Butterworth filters and buffers. It includes three channels for standard definition (Y/C or CVBS) and three for high definition component signals (YPrPb or RGB). The device operates from a single 5 V supply with a typical quiescent current of 32 mA. Each channel provides rail-to-rail outputs with 6 dB gain, a built-in 250 mV DC offset for DC coupling, and a transparent sync tip clamp. The part is housed in a 20-lead TSSOP package.

Feature Summary

• Six independent sixth-order Butterworth filters configured for SD and HD video processing
• Transparent input sync tip clamp enabling AC coupling without DC restoration
• Rail-to-rail output drivers with 6 dB gain and built-in DC 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 specific ordering suffix matches the required package type and reel quantity. Confirm RoHS compliance status as indicated by the 'Z' suffix in the part number. Ensure the temperature range meets the operational requirements of the target environment. Cross-reference the datasheet revision to confirm pinout and electrical specifications remain consistent with the design.

Selection Notes

Select this component when designing video reconstruction filters for consumer electronics requiring both SD and HD signal processing. The integrated buffer capability allows direct driving of dual 75 Ω loads without external amplification. Consider the thermal resistance characteristics if operating at elevated ambient temperatures. Verify that the single 5 V supply voltage aligns with the system power architecture.

Part Context

This component belongs to the Analog Devices video filter family, specifically designed for consumer video applications. It serves as a reconstruction filter following DAC outputs in video encoders. The device integrates multiple filter stages into a single package to reduce board space and component count compared to discrete solutions.

Replacement Considerations

Check for availability of the 16-lead QSOP variant if package size constraints differ. Evaluate alternative multi-channel video filters if higher channel counts or different bandwidth specifications are required.