ADA4420-6ARQZ-RL

Overview

The ADA4420-6ARQZ-RL 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. The HD channels provide a typical -1 dB bandwidth of 26 MHz, while SD channels offer approximately 8.6 MHz. A disable feature reduces supply current to less than 8 μA when inactive.

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 significantly reduces power consumption by lowering supply current when inactive
• Provides rail-to-rail output drivers with 6 dB gain and a built-in DC offset for direct DC coupling

Applications

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

Procurement Notes

Verify the package type matches the required form factor, as this specific suffix indicates a 16-lead QSOP. Confirm the temperature range meets operational requirements, as industrial variants are specified for extended ranges. Ensure the ordering quantity aligns with production needs, noting that reel packaging typically involves larger unit counts compared to tubes. Cross-reference the RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when designing video reconstruction filters for both standard and high-definition formats within a single integrated circuit. The device is suitable for applications requiring low power consumption due to its efficient quiescent current and dedicated disable pin. Consider the rail-to-rail output capability and built-in DC offset when interfacing directly with downstream components without external coupling capacitors. Evaluate the PCB layout requirements carefully to maintain signal integrity given the high-speed nature of the video signals.

Part Context

The ADA4420-6 belongs to Analog Devices' family of low-cost video reconstruction filters. It is specifically engineered to handle both SD and HD video signals simultaneously, making it a versatile solution for multi-format consumer electronics. The device simplifies design by integrating multiple filter stages into a single package, reducing board space and component count compared to discrete solutions.

Replacement Considerations

Check for other packages in the same series, such as the 20-lead TSSOP variant (ADA4420-6ARUZ-RL), if footprint compatibility differs. Verify functional equivalence with other multi-channel video filters if pinout constraints prevent direct substitution.