ADA4420-6ARUZ

Overview

The ADA4420-6ARUZ 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 DC offset for direct DC coupling. Each output can drive two 75 Ω doubly terminated cables. The device includes a disable feature to reduce power consumption and operates within an extended industrial temperature range of −40°C to +85°C in a 20-lead TSSOP package.

Feature Summary

• Integrates six independent sixth-order Butterworth filters/buffers for simultaneous SD and HD signal processing
• Features transparent sync tip clamp allowing AC coupling without requiring DC restoration
• Includes a disable function that reduces supply current to less than 8 μA when inactive
• Provides rail-to-rail outputs with 6 dB gain and a built-in 250 mV DC offset for DC-coupled connections

Applications

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

Procurement Notes

Verify the specific package variant during procurement, as the ARUZ suffix denotes the 20-lead TSSOP form factor. Confirm RoHS compliance status via the manufacturer's ordering guide, as indicated by the Z suffix in related part numbers. Ensure the design accommodates the required operating voltage range and thermal dissipation characteristics for the selected enclosure environment.

Selection Notes

Select this component for designs requiring integrated filtering for both standard and high-definition video paths within a single channel count. The built-in DC offset simplifies interface requirements by eliminating large coupling capacitors. Consider the disable pin functionality if system-level power management is a priority. Verify PCB layout constraints for high-speed video traces to maintain signal integrity.

Part Context

The ADA4420-6 belongs to Analog Devices' family of low-cost video reconstruction filters. It serves as a specialized solution for consumer electronics where space and power efficiency are critical. The device consolidates multiple filter stages into one IC, reducing the bill of materials compared to discrete solutions. It is distinct from general-purpose operational amplifiers by its optimized frequency response for video bandwidths.

Replacement Considerations

The ADA4420-6ARQZ is a confirmed substitute offering identical electrical performance in a 16-lead QSOP package.