ADA4412-3ARQZ-R7

Overview

The ADA4412-3ARQZ-R7 is an integrated triple video filter with selectable cutoff frequencies for RGB, HD/SD signals. It features sixth-order adjustable filters at 36 MHz, 18 MHz, and 9 MHz. The device operates on a single +5 V or ±5 V supply, drawing 53 mA to 60 mA quiescent current. It includes a disable feature reducing current to 10 μA. DC output offset is adjustable by ±500 mV input-referred. Outputs swing rail-to-rail, supporting 4.5 V p-p on a single 5 V supply. It drives two 75 Ω doubly terminated cables.

Feature Summary

• Integrates three sixth-order Butterworth video filters with group delay optimization for high-definition signal integrity.
• Offers selectable cutoff frequencies via logic pins to support various component video standards including RGB, YPbPr, and SD formats.
• Provides rail-to-rail output buffers capable of driving dual 75 Ω loads with fixed throughput gain.
• Includes a power-down mode that significantly reduces supply current when the device is not in active use.

Applications

• Video reconstruction filtering following DAC outputs in encoders
• Antialias filtering for high-resolution video signals
• Signal conditioning for set-top boxes and HDTVs

Procurement Notes

Verify the specific ordering suffix corresponds to the required tape-and-reel quantity configuration. Confirm the package type matches the target PCB footprint requirements. Ensure the temperature range rating aligns with the operational environment specifications. Check for lead-free compliance status if required by regulatory standards. Validate pin compatibility with existing circuit designs before integration.

Selection Notes

Select this component when designing systems requiring simultaneous filtering of three component video channels. Consider the device for applications needing flexible bandwidth adjustment between standard and high-definition resolutions. Evaluate the power consumption constraints against the available supply voltage options. Assess the need for DC offset adjustment capabilities to ensure proper signal levels at the output stage.

Part Context

This part belongs to the ADA4412-3 family of integrated video filters manufactured by Analog Devices. It is designed specifically for handling component video signals in consumer electronics and professional AV equipment. The device consolidates multiple filter stages into a single compact package to simplify board layout and reduce component count.

Replacement Considerations

ADA4412-3ARQZ

FAQ

How is the filter cutoff frequency selected?

The cutoff frequencies are selected using two logic inputs, F_SEL_A and F_SEL_B, which allow for four different combinations of 36 MHz, 18 MHz, and 9 MHz settings.

What is the function of the LEVEL1 and LEVEL2 pins?

These pins form a differential input used to adjust the DC output offset voltage over an input-referred range of ±500 mV.

Can the device operate with AC-coupled inputs?

Inputs are normally DC-coupled. AC coupling is not recommended but can be used if suitable circuitry is provided to maintain proper DC level and bias currents at the input stages.